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PA & Health 330 > Obesity > Flashcards

Obesity Flashcards

1
Q

When was obesity recognized as a major health problem?

A

In the US surgeon general report of 2001

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2
Q

What did WHO say about obesity in 2011?

A

WHO stated that obesity had more than doubled from 1980-2011

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3
Q

What % of the world’s population live in countries where obesity kills more than being underweight?

A

65%

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4
Q

Who created the BMI formula?

A

Belgium statistician Adolphe Quelet

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5
Q

When was Adolphe Quelet alive?

A

1796-1874

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6
Q

What is BMI

A

Body mass indicator used to measure obesity

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7
Q

Who does BMI not work for?

A
  1. Muscular people

2. Kids

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8
Q

What is the ratio for BMI?

A

Weight to height

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9
Q

What is the metric BMI formula?

A

Weight in kg / height in m ^2

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10
Q

What are the units for the metric BMI formula?

A

Kg / m^2

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11
Q

What is the imperial BMI formula?

A

Weight in lbs x 703 / height in inches ^2

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12
Q

What are the units for the imperial BMI formula?

A

Lbs / inches ^2

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13
Q

What is the conversion factor of inches to m?

A

1m = 39.37 inches

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14
Q

What is the conversion factor of kg to lbs?

A

1kg = 2.2lbs

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15
Q

What is the ponderal index?

A

A more fair comparison between individuals of different stature

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16
Q

How do you calculate the ponderal index?

A

Weight in kg / height in m ^3

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17
Q

What are the units for the ponderal index?

A

Kg / m^3

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18
Q

What is a BMI healthy range?

A

Approximately 19 - 25

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19
Q

What is BMI higher risk?

A

Approximately 26 - 40

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20
Q

Who uses the BMI chart?

A

Pediatricans and PE teachers use BMI charts

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21
Q

Who created BMI charts?

A

WHO and Centers for Disease Control

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22
Q

What does it mean if a child is in the 95th percentile of weight for a given age?

A

It means that they have increased risk of obesity due to the fact that 95% of people lie below their weight and only 5% of people lie above

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23
Q

What would a typical BMI be for a short child who weighs more than normal?

A

They would have a high risk BMI

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24
Q

What would be a typical BMI for a tall child with the same weight as the short child?

A

They would have a normal BMI - body parts are proportional

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25
Q

What is underweight classified as?

A

<18.5

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26
Q

What percentile is underweight in?

A

Less than the 5th percentile

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27
Q

What is normal range classified as?

A

18.5 - 24.9

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28
Q

What percentile is normal range in?

A

Between 5th and 85th percentile

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29
Q

What is overweight range classified as?

A

> 25.0

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30
Q

What percentile is overweight in?

A

Between 85th and 95th percentile

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31
Q

What is pre-obese range classified as?

A

25.0 - 29.9

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32
Q

What is obese range classified as?

A

> 30.0

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33
Q

What percentile is obesity in?

A

Greater than the 95th percentile

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34
Q

What is obese class I range classified as?

A

30.0 - 34.9

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35
Q

What is obese class II range classified as?

A

35.0 - 39.9

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36
Q

What is obese class III range classified as?

A

> 40.0

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37
Q

What is severe thinness range classified as?

A

> 16.0

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38
Q

What is moderate thinness range classified as?

A

16.0 - 16.9

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39
Q

What is mild thinness range classified as?

A

17.0 - 18.49

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40
Q

What is a protective factor for a population in regards to BMI?

A

Being within a healthy range of weight to height

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41
Q

What BMI constitutes bariatric surgery candidates?

A

> 40.0

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42
Q

Who is Herschel Walker?

A
  1. World champ at 100m

2. Fullback for the Eagles

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43
Q

What is Herschel Walker’s height and weight?

A

6’2” and 240lbs

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44
Q

What is Herschel Walker’s BMI?

A

32.5

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45
Q

What would HW’s BMI imply about his life?

A

It implies that he is in the obese class I category

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46
Q

How much body fat does HW have?

A

4%

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47
Q

What is the discrepancy between BMI and HW?

A

He is technically considered in a high risk, obese class I range but when you look at his muscle vs. fat mass, he is nowhere near being too fat

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48
Q

Do women or men tend to have higher BMI’s when looking at the same age category?

A

Women - more BF generally

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49
Q

Explain the trend of the BMI curve in men and women between 2-20 years old.

A

It starts off at a higher BMI because children tend to have more BF, and then it dips as they grow out of baby fat, and then it continually increases as age increases due to height, adipose tissue, and muscle changes

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50
Q

What kind of relationship exists between obesity and all cause mortality?

A

A U or J shaped curve

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51
Q

What does the U or J shaped curve indicate?

A

It implies that as BMI is on the lower range (underweight) and on the higher range (overweight), there is more of a chance for premature death/all cause mortality

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52
Q

What is the nadir of the curve?

A

Lowest level of something being measured

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53
Q

What is the nadir of the curve in obesity vs. all cause mortality?

A

The people who have the lowest risk of mortality because they have a normal range of BMI

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54
Q

What do the U and J shape curves already account for?

A

Smokers - with or without history of disease

Non smokers - with or without history of disease

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55
Q

What does it mean if smokers and non smokers including their family histories are taken into account?

A

It means that despite whether someone smokes or does not or has a family history of disease or does not, their own individual BMI still correlates to a certain depiction of mortality rate

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56
Q

Do men tend to have all cause mortality rates higher at underweight or overweight end?

A

Overweight end

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57
Q

Do women tend to have all cause mortality rates higher at underweight or overweight end?

A

It is about equal

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58
Q

What kind of trend has been noticed in media coverage regarding obesity?

A

Media coverage on obesity epidemic has escalated as shown from 2000-2003 in a 4000 case increase

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59
Q

How much BF do men normally have?

A

12-20%

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60
Q

How much BF do obese men have?

A

Over 25%

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61
Q

How much BF does a man need to survive?

A

At least 4%

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62
Q

How much BF do women normally have?

A

20-30%

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63
Q

How much BF do obese women have?

A

Over 30%

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64
Q

How much BF does a woman need to survive?

A

8-9%

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65
Q

What kind of profession would someone with the minimum amount of BF be doing?

A

Elite running

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66
Q

What is overweight defined as?

A

Too much body weight for a given height and frame

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67
Q

What is obesity defined as?

A

An overeat level that brings with it an increased risk of serious and fatal disease

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68
Q

Can a person be overweight without being obese?

A

Yes

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69
Q

Give 2 examples of when someone can be overweight but not obese

A
  1. Muscle mass is greater than adipose mass

2. Low waist circumference but has a high BMI

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70
Q

Who is an example of being overweight but not obese?

A

Herschel Walker

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71
Q

What do you typically see in older people?

A

Someone who is not overweight but is overfat

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72
Q

What is it called when someone is not overweight but is overfat?

A

Sarcopenic obesity

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73
Q

What is sarcopenia?

A

Loss of muscle

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74
Q

What is sarcopenic obesity?

A

Losing a lot of muscle which procures a larger amount of adipose tissue/fat

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75
Q

Are people with sarcopenic obesity overweight?

A

No they are not overweight but they do have an over abundancy of fat

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76
Q

What kind of characteristics does someone with sarcopenic obesity have?

A

Fat and frail

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77
Q

What are the greatest health risks to sarcopenic obesity?

A
  1. Osteoporosis and falls

2. Metabolic syndrome and HD

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78
Q

What are the symptoms of frailty?

A

Osteoporosis

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79
Q

Are older people generally advised to retain some body fat?

A

Yes for BMR purposes but not when the fat becomes in excess

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80
Q

What % of people over 20 are overweight in the US?

A

67%

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81
Q

What % of youth between 2-19 are overweight?

A

16.3%

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82
Q

What % increase has the prevalence of overweightness been seen in 2-5yo?

A

5 to 12.4%

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83
Q

What % increase has the prevalence of overweightness been seen in 6-11yo?

A

6.5 to 17%

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84
Q

What % increase has the prevalence of overweightness seen in 12-19yo?

A

5 to 17.6%

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85
Q

What 3 things does PIA and excess weight when combined do to revenue in society?

A
  1. Increases health care medical costs
  2. Increases worker compensation
  3. Increases a loss of productivity
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86
Q

What other diseases are you at an increased risk for if you have obesity?

A
  1. CHD
  2. Type II diabetes
  3. Certain cancers
  4. HT
  5. High cholesterol
  6. Stroke
  7. Liver and gall bladder diseases
  8. Sleep apnea and respiratory problems
  9. OA
  10. Gynaecological problems
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87
Q

What kinds of cancers do you have increases risks for when you are obese?

A
  1. Endometrium
  2. Colon
  3. Breast
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88
Q

What constitutes a gynaecological problem?

A

Issues with menses and fertility

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89
Q

What is type I diabetes?

A

An auto-immune disorder where the body cannot produce insulin in the pancreas

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90
Q

What is type I diabetes also known as?

A

Juvenile diabetes

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91
Q

What is type II diabetes?

A

A metabolic disorder where the body can create insulin but there is too much glucose and so little space to bind that the body becomes insulin resistant and you retain glucose

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92
Q

What is type II diabetes also known as?

A

Adult diabetes

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93
Q

Is type II diabetes becoming prevalent in children nowadays?

A

Yes

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94
Q

What are modifiable risk factors for obesity?

A
  1. PIA
  2. Excess caloric intake
  3. Low socio-economic status
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95
Q

What are non modifiable risk factors for obesity?

A
  1. Age
  2. Heredity
  3. Ethnicity
  4. Culture
  5. Metabolism
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96
Q

What kind of PA best targets weight maintenance?

A

Aerobic activity is preferred over resistance training

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97
Q

What is the volume of PA needed for weight maintenance?

A

13 to 26 MET hours per week

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98
Q

What does 13 to 26 MET hours equate to?

A
  1. Walking 4 mph for 150 minutes of the week

2. Jogging 6mph for 75 minutes of the week

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99
Q

What is the best combination for weight maintenance?

A

Diet and exercise

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100
Q

What volume is needed to prevent weight regain?

A

30 MET hours or more per week

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101
Q

What is 30 MET hours equating to?

A

Walking 4 miles per hour for 50 minutes daily

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102
Q

How much PA should children acquire to prevent the risk of obesity?

A

At least 30 minutes of MVPA

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103
Q

What is an epidemiological measure?

A

The frequency at which an event occurs in terms of injury, disease, and cause of death

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104
Q

What was the issue with Grow Up Fertilizer?

A

Farmers had an increased prevalence to get ill due to toxins inside the fertilizer

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105
Q

What is an incident case?

A

New occurrences of these events during a time period of interest

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106
Q

What is a prevalent case?

A

Diseases that are developed and diagnosed already during a time period of interest

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107
Q

What are 2 examples of incident cases?

A
  1. Deaths from a certain disease

2. Not injured becoming injured

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108
Q

What trend is seen in adult overweight and obese categories at greater than 20yo in 1988 to 2003?

A

Overweight: 55% to 65%
Obesity: 22% to 32%

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109
Q

Are obese people categorized into the overweight portion?

A

Yes - because obese people also have >25 BMI alike overweight

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110
Q

Are overweight people categorized into the obese portion?

A

No - because overweight people do not have >30 BMI

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111
Q

Which group has a higher total % - overweight + obese or just obese?

A

Overweight + obese

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112
Q

What trend is seen in adult overweight and obese categories at greater than 20yo between specifically 1999 and 2003?

A

A smaller increase in the prevalence of overweightness and obesity compared to the increase from 1988 - 2003

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113
Q

Where is the prevalence of metabolic syndrome noted?

A
  1. Italy
  2. US
  3. Omani
  4. Porto
  5. Indian Americas
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114
Q

What typically occurs when people have arthritis or other rheumatic conditions?

A

They have reduced levels of leisure time PA due to these disabilities

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115
Q

How many people does arthritis and rheumatic conditions affect in the USA as of 1995?

A

About 40 million

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116
Q

How many people are arthritis and rheumatic conditions projected to affect in the USA as of 2020?

A

About 60 million

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117
Q

Are arthritis and rheumatic conditions the leading cause of disability in the US?

A

Yes

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118
Q

Why is PA leisure time down in people with arthritic disabilities?

A

They become less likely to do PA

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119
Q

What is a rate in epidemiology?

A

Number of events, cases, or deaths per population of interest across some period of time

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120
Q

What is a rate also described as in epidemiology?

A

The progression of disease statistics in terms of numbers in a specific population

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121
Q

What amount of children <12yo had medically attended injuries?

A

3835 - 8% of their population

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122
Q

What amount of children between 12-17yo had medically attended injuries?

A

2889 - about 12% of their population

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123
Q

How many people in Canada are obese?

A

7.6 million

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124
Q

What percentage of Canadians is this total?

A

7.6/33 = 0.231 = 23.1%

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125
Q

What is the approximate fraction of obesity in Canada?

A

About 1 in 4

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126
Q

What is the BRFSS?

A

Behavioural Risk Factor Surveillance System

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127
Q

What was considered as the obesity epidemic in America?

A

People with a BMI over 30 or people who were 30lbs overweight for a person at 5’4”

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128
Q

What is the typical trend of obesity in America between 1985-1990?

A
  1. A lot of states were not surveyed
  2. Most states began in the <10%
  3. As the years went on, the ratio of states went closer to most being in the 10-14% range
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129
Q

What happened in 1991 with the obesity epidemic in America?

A

An addition of a new colour was founded for mapping out states with 15-19% obesity rates

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130
Q

What is the typical trend of obesity from 1990-1995?

A
  1. Colorado was the last state to move to 10-14%
  2. All states are at 10-14% or higher
  3. Increasing proportion of 15-19%
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131
Q

What happened in 1997 with the obesity epidemic in America?

A

An addition of a new colour was founded for mapping out states with >20% obesity rates

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132
Q

What is the typical trend of obesity from 1995-2000?

A
  1. Increasing amount of 15-19%
  2. After 1997, most states are now at >20%
  3. Colorado was the last state to move out of 10-14%
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133
Q

What happened in 2001 with the obesity epidemic in America?

A

An addition of a new colour was founded for mapping out states with >25% obesity rates

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134
Q

What is the typical trend of obesity from 2000-2005?

A
  1. Most states sit at >25% obesity

2. 1 in 4 Americans have obesity

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135
Q

What happened in 2005 with the obesity epidemic in America?

A

An addition of a new colour was founded for mapping out states with >30% obesity rates

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136
Q

What is the typical trend from 2005-2010?

A
  1. Most states are at 25-29% of obesity rates
  2. The South is sitting primarily at >30%
  3. Colorado is the last state to change to 25-29%
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137
Q

What is the age adjusted obesity rate as of 2015?

A

USA is >26% obese

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138
Q

What is the age adjusted diabetes rate as of 2015?

A

USA in >9.0% diabetic in cases where obese is prevalent

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139
Q

What kind of obesity trend did Canada see in 1990?

A

Most provinces sat between 10-14% except for AB, BC, and QC

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140
Q

What kind of obesity trend did Canada see in 1994?

A

All provinces were at 10-14% obesity but now SK, MB, and the Maritimes were at 15-19% obese

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141
Q

What kind of obesity trend did Canada see in 1998?

A

All provinces were at 15-19% obese except for BC and QC

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142
Q

What kind of obesity trend did Canada see in 2000?

A
  1. BC and QC at 10-14%
  2. Yukon and central provinces are at 15-19%
  3. NW, NU, and Maritimes are >20% obese
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143
Q

When CDC measured the prevalence of BMI at 30+ in Canada between 1978 and 2010, what techniques did they use?

A
  1. Self reporting - telephone survey

2. Measuring - bringing people in

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144
Q

What was the general trend of BMI being at 30+ between 1978-2010 in Canada?

A

There was a steep almost doubling in the prevalence of obesity

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145
Q

Is self reporting accurate?

A

No

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146
Q

How does CDC’s study on BMI of over 30+ prove that self reporting is not accurate?

A

Measured BMI over 30 at 25% of people

Self reported BMI over 30 at 17% of people

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147
Q

Why is self reporting inaccurate?

A
  1. Non reliance of survey

2. Under/over reporting

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148
Q

What do men tend to over report?

A

Height

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149
Q

What do women tend to under report?

A

Weight

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150
Q

What do seriously obese people tend to not do?

A

Weigh themselves because they are fearful of what they might see

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151
Q

What are the trends of changing Canadian obesity rates between 1978-2004 in young adults (25-34)?

A

A tripling of obesity

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152
Q

What are the trends of changing Canadian obesity rates between 1978-2004 in children (12-17)?

A

A doubling of obesity

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153
Q

What are the trends of changing Canadian obesity rates between 1978-2004 in elderly (75+)?

A

A more than doubling of obesity

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154
Q

What percentage of elderly have sarcopenic obesity as of 2004?

A

About 30-40% of elderly people

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155
Q

What is a common trend seen in obese young adults?

A

They are likely to become obese older adults

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156
Q

Were genetic influences hard to measure 30 years ago?

A

Yes

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157
Q

What do they use to measure genes nowadays?

A

Genomic readers

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158
Q

Who is Dr. Stuntgart?

A

Father of Psychiatry

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159
Q

What did Dr. Stuntgart do?

A

He found separated identical twins and that the circumference of the children had identical profiles to a BMI closer related to their birth parents and to each other than their adoptive parents

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160
Q

What is a typical comparison between Canadian and American obesity rates?

A

Canadian women and men tend to be less obese

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161
Q

By what % are Canadian men less obese than American men?

A

About 5%

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162
Q

By what % are Canadian women less obese than American women?

A

About 10%

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163
Q

Who accounts for a large proportion of obese women in America?

A

African American women

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164
Q

What is the ratio of AA women who are obese in USA?

A

About 1 in 2

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165
Q

When looking at the % distribution of household population above 18 in Canada, where do most people sit?

A

In the normal weight range between 18.5 - 24.9 BMI

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166
Q

When looking at the % distribution of household population above 18 in Canada in 2004, who is included in the underweight group?

A
  1. Cancer patients
  2. Anorectic individuals
  3. Lean athletes
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167
Q

When looking at the % distribution of household population above 18 in Canada in 2004, are men more overweight and obese class I than women?

A

Yes

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168
Q

When looking at the % distribution of household population above 18 in Canada in 2004, are women more obese class II and III than men?

A

Yes

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169
Q

When looking at the % distribution of household population above 18 in Canada in 2004, are there more women or men at a normal weight?

A

There are more women sitting at a normal weight than men are

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170
Q

When looking at the % distribution of household population above 18 in Canada in 2004, what could the high number of overweight men be due to?

A

It could be due to discrepancies of muscle mass exclusion in the BMI ratio

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171
Q

In which country, outside of Canada and US, are female obesity rates the highest as of 1992?

A

England

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172
Q

What problem do developed countries have similar to USA and Canada?

A

Increasing obesity rate

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173
Q

What 3 countries have increased female obesity rates as of 1980 to 1992?

A
  1. Australia
  2. Brazil
  3. England
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174
Q

Has the prevalence of female obesity gone down in Brazil since the study of female obesity rates done in 1980 to 1992?

A

Yes - they have created better promotions of PA including Move for Health on World Health Day

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175
Q

What happened to Japanese female obesity rates in 1980-1992?

A

They maintained and even decreased slightly in the amount of female obesity

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176
Q

What happened to Swedish female obesity rates in 1980-1992?

A

They maintained and only slightly increased in the amount of female obesity

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177
Q

Why would Japan and Sweden have lower female obesity rates?

A
  1. Diet of F/V

2. Active commuters

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178
Q

What kinds of modifiable factors contribute to less obesity?

A
  1. Higher level education

2. Socio-economic status

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179
Q

At what age does the obesity epidemic start as seen in Canada in 2004?

A

It moves the greatest amount for men from 18-24 into 25-34 and it moves the greatest amount for women from 35-44 into 45-54

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180
Q

What happens to the rate and numbers of obesity as you age?

A
  1. Rate will drop off

2. Numbers continue to increase

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181
Q

When does the numbers of obesity stop increasing and start decreasing on the age spectrum?

A

After the age of 64 for both men and women

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182
Q

Why would the prevalence of obesity start to decrease after the age of 64?

A
  1. Obese people get sick and die early
  2. Older people do not get the same enjoyment of food due to a loss of smell and taste buds which causes minimized intake
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183
Q

What could be 1 reason why 35-44yo men have lower risks of obesity than 25-34yo men?

A

Plainly due to their age - most men between 25 and 34 are finishing university and starting to live life on their own again

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184
Q

What race did CDC find to have the least prevalence of obesity?

A

White non hispanics

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185
Q

What race did CDC find to have the second most prevalence of obesity?

A

Hispanics

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186
Q

What race did CDC find to have the most prevalence of obesity?

A

AA non hispanics

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187
Q

Of these AA non hispanics that are obese, what gender is it mainly?

A

Women

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188
Q

At the current rate of increase in obesity, what is the stat said to be by 2059?

A

All Americans will be overweight

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189
Q

According to the races that are most likely to become obese, who is most likely to become diabetic?

A
  1. AA non hispanics and Native Americans
  2. Hispanics
  3. White non Hispanics
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190
Q

Are people obsessed with weight?

A

Yes

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191
Q

Is thin waist and high BMI ideal?

A

No

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192
Q

What gender has the most problems with optimal BW?

A

Women - typically Caucasian women

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193
Q

Why are AA women more realistic with their weight than Caucasian women?

A

There is not as much of a stigma on weight in the AA population

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194
Q

What is the magnitude of obesity in accordance with?

A

The prevalence of obesity in society

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195
Q

Which age category has the worst magnitude of obesity?

A

45 to 54 year olds and 55 to 64 year olds

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196
Q

What causes decreases in the magnitude of obesity at 75+?

A
  1. Death
  2. Decrease in enjoyment of food
  3. Decrease in intake of food
  4. Sarcopenic obesity (appearing to be over fat but do not have a high BMI)
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197
Q

What is the optimal BW?

A

BMI at 18.5 - 24.9

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198
Q

What is a weight optimal for appearances?

A
  1. Individually decided

2. Based largely on beauty standards

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199
Q

What is a weight optimal for peak performances?

A

Based on the sport or performance that the individual is looking for

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200
Q

What 3 layers of the body are there?

A
  1. Outer- skin and fat
  2. Middle - muscles
  3. Inner - bones
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201
Q

What are the 2 typical body composition changes in Canadian people from 25 to 55 years old?

A
  1. Gaining 1 pound per year = 30lb increase

2. Losing 1/2 pound per year = 15lb decrease

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202
Q

What is the total increase of weight for the average Canadian between 25 to 55 years old?

A

If you lose 15lbs but gain a net 30lbs, you have actually gained 45lbs

203
Q

What is it called when you think you are losing weight every year due to muscles but are actually gaining it back through mass and lifestyle choices?

A

Creeping obesity

204
Q

What comprises of lean tissue?

A
  1. Muscle
  2. Bone
  3. Connective tissue
  4. Organs
205
Q

What comprises of fat tissue?

A
  1. Sub cutaneous fat

2. Internal fat - android obesity over abdominal region

206
Q

What are lab methods of determining body composition?

A

Tests done within the lab with specialized equipment

207
Q

What is underwater weighing?

A

A lab method of determining % fat by weighing a person on land, underwater, and then estimating their body density of mass/volume which is correlated to their % of fat

208
Q

What is bioelectrical impedance?

A

A lab method where current enters the body and measures the resistance drop throughout the body

209
Q

Where are electrodes placed in bioelectrical impedance?

A
  1. Attachment of wrist to machine and other wrist to an electrode
  2. Attachment of foot to machine and other foot to an electrode
210
Q

What happens to the resistance if you have a lot of muscle?

A

Muscle is 70-73% water so there will be a smaller resistance drop as the current travels through

211
Q

What happens to the resistance if you have a lot of fat?

A

Fat is 10% water so there will be a greater resistance drop as the current travels through

212
Q

What is wrong with bioelectrical impedance?

A

It has a fancy output but it is not a great measure of the % fat

213
Q

What are examples of bioelectrical impedance?

A
  1. Taneda scales

2. Ultrasound wounds

214
Q

What are 2 other lab methods used to determine percent of fat?

A
  1. Ultrasounds

2. X rays

215
Q

What is an MRI?

A

A lab method to determine fat by producing images of organs

216
Q

What is a DEXA machine?

A

A lab method used to determine bone, fat, and muscles by dual energy and x ray absorptiometry

217
Q

What is a CT scan?

A

A lab method used to determine visceral adiposity

218
Q

What is a downfall of a CT scan?

A

It’s dose of radiation is fairly high

219
Q

What are field method measurements in assessing body composition?

A

Tests that can be done by any odd person and does not require use of extensive equipment

220
Q

What are 3 examples of field methods?

A
  1. BMI
  2. Skinfold measurements
  3. Circumference measurements
221
Q

What margin of error do field methods have?

222
Q

What is the bod pod?

A

A pressurized cage that measures body volume and assesses alike underwater weighing

223
Q

What is the bod pod used to do?

A

Determining density and thus, % of fat and muscle

224
Q

Who is the bod pod good to use on?

225
Q

What did Dr. King do a study on?

A

The effects of maternal adversity on the birth of children when the pregnant mother had to survive an ice storm

226
Q

Where do men normally accumulate adiposity?

A

Abdomen - android obesity - apple shape

227
Q

Where do women normally accumulate adiposity?

A

Hips - gynoid obesity - pear shape

228
Q

What is the waist/hip ratio?

A

It is the waist circumference divided by the hip circumference

229
Q

What is the waist/hip ratio related to?

A

Android obesity and internal body fat

230
Q

What are the AHA standards for waist/hip ratio?

A

Males - less than 1.0

Females - less than 0.8

231
Q

Where is the most hazardous place for fat to be stored?

A

Upper body

232
Q

What is visceral fat?

A

Interior fat that is hard on touch and more difficult to lose

233
Q

What is subcutaneous fat?

A

Exterior fat that is jiggly

234
Q

What did Dr. Despres study?

A

The effects of VPA on decreasing visceral body fat

235
Q

What happens as fat cells enlarge?

A

They push up against the skin

236
Q

What happens when muscle is surrounded by too much fat?

A

The fat becomes marbled into the muscle

237
Q

While the fat is pushing up against the skin, what is also happening?

A

Tough, long connective cords are pulling the fat down

238
Q

What is this up-down tension in fat cells called?

239
Q

What does cellulite do?

A

It creates an uneven surface or dimpling

240
Q

How much does the cellulite industry make per year?

A

$3 billion

241
Q

How many people are estimated to have metabolic syndrome in the USA?

A

About 47 million people

242
Q

What are contributing factors to MS?

A

Genetics and environment

243
Q

What are resulting factors of MS?

A

CVD and type II diabetes

244
Q

What are characteristics of MS?

A
  1. Inflammation
  2. High BP
  3. High triglyceride levels
  4. High glucose or insulin levels
  5. Visceral/abdominal adiposity
  6. High LDL
  7. Abnormal vascular responses - prothrombotic
  8. Low HDL-C levels
245
Q

What does it mean to be prothrombotic?

A

Increased risk of blood clots

246
Q

What is MS a consequence of?

247
Q

What is the trend for the prevalence of MS among US adults?

A

As age increases, so does the chances for MS

248
Q

Are younger or older bodies better at handling the assault of their body?

A

Younger bodies can sustain unhealthy functioning better than older bodies

249
Q

Who has the highest risk of MS in the US?

A

Women above the age of 70 and men + women in the age range of 60-69

250
Q

Who has the lowest risk of MS in the US?

A

Women between 20-29 years old

251
Q

What is a normal blood sugar?

A

80-100mg/dl

252
Q

What is pre-diabetic blood sugar?

A

100-120mg/dl

253
Q

What is high blood sugar/hyperglycemic?

A

> 120mg/dl

254
Q

What is low blood sugar/hypoglycemic?

255
Q

What is very low blood sugar?

256
Q

What can you occur at very low blood sugars?

A

Unconsciousness

257
Q

What amount of Canadians had diagnosed diabetes in 2008 and 2009?

A

Approximately 2.4 million - 6% overall

258
Q

Are there chances for unreported cases of diabetes?

A

Yes - at least a million

259
Q

Where is the highest prevalence of diabetes in Canada?

A

Ontario and the Maritimes

260
Q

Where is the lowest prevalence of diabetes in Canada?

A

Nunavut and Alberta

261
Q

What are other names to MS?

A
  1. Syndrome X

2. Insulin Resistant Syndrome

262
Q

What are the 2 main RF’s for MS?

A
  1. CVD

2. Type II diabetes

263
Q

What is the progression of obesity?

A

Obesity - MS - diabetes - CVD

264
Q

What are acknowledged as important causative factors in MS?

A
  1. Central obesity

2. Insulin resistance

265
Q

Is MS well understood?

A

Not yet - too complex

266
Q

What are the 5 RF’s associated with MS as stated by NCEP ATP III?

A
  1. Abdominal obesity
  2. Triglyceride level
  3. HDL
  4. BP
  5. Fasting plasma glucose
267
Q

How many of the RF’s do you need to have to be described as having MS?

A

3 of the 5

268
Q

Does diabetes follow the same criterion as MS?

269
Q

What 4 other factors are included when assessing diabetes?

A
  1. Family history
  2. Ethnicity or race
  3. Sedentary lifestyle
  4. History of CVD (high risk of HD and stroke)
270
Q

What are the 3 ways to diagnose diabetes?

A
  1. Fasting Plasma Glucose Test - after 8 hours
  2. Oral Glucose Tolerance Test - after 8 hours and ingestion of glucose 2 hours before
  3. Random Plasma Glucose Test - diabetic symptoms present
271
Q

What test is normally used for gestational diabetes?

A

Oral glucose tolerance test

272
Q

What is the indicator that someone has diabetes?

A

When one of these tests has a highly increased glucose level?

273
Q

What are the guidelines for abdominal obesity as an RF for MS?

A

Men - >102 cm

Women - >88 cm

274
Q

What are the guidelines for triglycerides as an RF for MS?

A

> 150 mg/dl

275
Q

What are the guidelines for HDL as an RF for MS?

A

Men - <40mg/dl

Women - <50mg/dl

276
Q

What are the guidelines for blood pressure as an RF for MS?

A

> 130/>85 mmHg - could be equal to these numbers

277
Q

What are the guidelines for fasting plasma glucose as an RF for MS?

A

> 110mg/dl - could be equal to this number

278
Q

What 2 changes are there to RF’s for MS in terms of the IDF organization?

A
  1. Men >94cm abdominal obesity
  2. Women >80cm abdominal obesity
  3. > 100mg/dl for fasting plasma glucose
279
Q

What are the 5 major health problems with regards to obesity?

A
  1. Risk for type II diabetes
  2. RF for some kinds of cancers
  3. High total cholesterol
  4. High BP linked to RF for CHD
  5. Social, psychological, financial, and health care problems
280
Q

What is the risk factor of MS in regards to PA?

A

When there is self reported high PA levels, there is a lower risk of MS yet when there is self reported low PA levels, there is a higher risk of MS

281
Q

What is the risk factor of developing MS in regards to fitness level?

A

As the level of fitness increases, the risk of MS decreases yet as level of fitness decreases, the risk of MS increases

282
Q

What is the age adjusted prevalence of metabolic syndrome in Canada?

A

About 1 in every 4 people:
Women - 25.2%
Men - 26.8%

283
Q

Which group in Canada experiences the least MS?

284
Q

Which women are less likely to experience MS than men?

A
  1. Chinese

2. European

285
Q

Which women are more likely to experience MS than men?

A
  1. South Asian

2. Aboriginal

286
Q

Which group in Canada experiences the most MS?

A

Aboriginals at 40-45%

287
Q

How does PA help MS?

A
  1. Increased TEE
  2. Increased protein synthesis
  3. Increased AA uptake into skeletal muscle
  4. Reduced LDL
  5. Reduced triglyceride levels
  6. Increased HDL
  7. Improved glucose tolerance
288
Q

What is the paradox in the USA regarding obesity and PA?

A
  1. Dollars spent on diets and diet products in 2017 in the US was equal to 50 billion
  2. Number of US Health Club members rose to 39.4 million in Jan 2004
  3. 2003 US industry revenues received 14.1 billion
289
Q

Why is MS so prevalent if diet products and PA are supposedly being advertised so much?

A
  1. Not sticking to training plan
  2. Poor choices
  3. Location and availability
290
Q

What is the Mark Eden Developer?

A

A fad concerning a small exercise mechanism that says it will improve bust line in a short period of time

291
Q

Did the Mark Eden Developer work?

A

It was claimed to work for a few people but the results mainly indicated that it did not work for most people

292
Q

What was the Dr. Oz Green Coffee Extract study?

A

Randomized, double blind, placebo controlled, linear dose, crossover study to evaluate efficacy and safety of a green coffee bean extract in overweight subjects

293
Q

What were the results of the study?

A

Inaccurate and it was later retracted

294
Q

Should you be wary around some weight loss products?

295
Q

Are weight loss skin patches or shoe inserts reliable?

296
Q

What 3 products should you avoid in weight loss products?

A
  1. Ephedra
  2. Ephedrine
  3. Ma Huang
297
Q

What do fat blockers or shrinkers do?

A
  1. Do not absorb or bind fat

2. Interfere with fat digestion

298
Q

What do fat absorbers or magnets do?

A
  1. Flush fat out before being absorbed
299
Q

What kind of tea should you avoid?

A

Diet teas that only cause a loss of bodily fluids

300
Q

Are fiber tablets, bee pollen, or laxatives recommended for weight loss?

301
Q

Should you use electrical muscle stimulators for WL or body toning?

302
Q

What are the 4 main things accounting for a sudden increase in the prevalence of obesity?

A
  1. Western diet
  2. Increased sodium
  3. Portion size
  4. Media
303
Q

What is positive energy balance?

A

Caloric consumption > caloric expenditure

304
Q

What is positive energy balance linked to?

A

Weight gain

305
Q

Where does the population sit in terms of energy balance?

A

Positive energy balance

306
Q

What is neutral energy balance?

A

Caloric consumption = caloric expenditure

307
Q

What is neutral energy balance linked to?

A

Weight maintenance

308
Q

What is negative energy balance?

A

Caloric consumption < caloric expenditure

309
Q

What is negative energy balance linked to?

A

Weight loss

310
Q

What are some plausible factors explaining the development of obesity?

A
  1. Genetics
  2. Body responses
  3. Learned behaviour
  4. Lack of discipline
  5. Work hours
  6. Portion sizes
  7. Snack foods
  8. Depression
  9. TV
  10. Physical disability
311
Q

What study was conducted regarding twins?

A

Testers added a surplus of 1000 kcals to the twin’s normal diets to see its affect

312
Q

What was the initial variability between Twin A and Twin B?

A

They were at different body sizes - 4kg or 14kg - tremendous variability

313
Q

What was the results of the twin study?

A

Weight gain was relatively similar in terms of patterns despite the starting point

314
Q

What is the typical BMI for PIMA Indians in Arizona?

A

Women - 36

Men - 30

315
Q

What is the typical BMI for PIMA Indians in Mexico?

A

Women - 25

Men - 25

316
Q

What is causing the discrepancy between Arizona and Mexico PIMA Indians?

A

Mexicans live rural with increased PA and healthy food whereas Arizona lives on a reservation with a Western diet and decreased PA

317
Q

What is the overview of the PIMA Indian study?

A

They have the exact same kind of culture/DNA but vary largely in BMI due to different environments

318
Q

Can identical twins look different in body composition?

A

Yes - but that will be due to training - i.e. runner vs. body builder

319
Q

What are the 2 main factors related to the onset of obesity?

A
  1. Altered dietary intake

2. Easy to access inexpensive food

320
Q

Where is there the most amount of KFC?

321
Q

Which park has 4 McDonald’s in it?

A

Stratford Olympic Park

322
Q

How many customers does the McDonald’s at Stratford seat?

323
Q

How common is McDonald’s in the US?

A

It is speckled everywhere, especially on the East and South Coasts

324
Q

What is the trend in energy intake from 1977 to 1994?

A

There was an increase of 200 calories, accounting for a few pound increase each month

325
Q

What is the trend in snacks consumed from 1977 to 1994?

A

There is a gradual increase of snacks consumed

326
Q

What is the trend in the percentage of kcal consumed at home from 1977 to 1994?

A

It has decreased because fewer women were in the workforce in 1977/1978 and would always make meals for their family but now people work a lot more at >10 hours per day and only want readily available food that they do not have to cook

327
Q

What is the trend in the amount of Mexican food eaten at home from 1977 to 1994?

A

It has slightly increased

328
Q

What is the trend in the amount of Mexican food eaten in fast foods from 1977 to 1994?

A

It has significantly increased

329
Q

What is the trend in the amount of Mexican food eaten in restaurants from 1977 to 1994?

A

It has slightly increased

330
Q

By approximately how much have soft drinks increased their portion sizes from 1978 to 1998?

A

By about 8oz or 200mL

331
Q

By approximately how much have fruit drinks increased their portion sizes from 1978 to 1998?

A

By about 3oz

332
Q

By approximately how much have hamburgers increased their portion sizes from 1978 to 1998?

A

A couple ounces more

333
Q

By approximately how much have french fries increased their portion sizes from 1978 to 1998?

A

A couple ounces more

334
Q

In general, what is trend in portion sizes?

A

Most things given out today are in much higher portion sizes than they were 40 years ago

335
Q

Which range of years did portion size change most drastically?

A

Between 1965 and 2005

336
Q

What kind of trend do you see in calories per capita per day between 1965 and 2005?

A

It has gradually increased

337
Q

What kind of trend do you see in the % of overweight and obese people from 1965-2005?

A

It has increased

338
Q

What does increased calories per day and larger portion sizes link to?

A

They link to an increased prevalence of obesity and overweightness in society

339
Q

In who does portion size of food affect energy intake and how?

A

In normal weight and overweight men and women, larger portions contribute to excess energy intake and greater obesity levels

340
Q

Why is a large plate affecting energy intake?

A

People do not realize how much more food they put on a larger plate than a smaller plate

341
Q

Has food intake increased increased in both men and women?

A

Yes - in terms of portion size and energy intake

342
Q

What are 6 shifts in food practices in North America?

A
  1. Fast food consumption
  2. Reduced frequency of family meals
  3. Restrained eating and meal skipping
  4. Consumption of soft drinks changing from 27 gallons in 1972 to 44 gallons in 1992
  5. 30 000 more products in the supermarket
  6. Increased portion sizes
343
Q

What will rats do if food is readily available to them all the time?

A

They will overeat until they die

344
Q

When and why was McDonald’s Supersize phased out?

A

It was phased out on March 3rd, 2004 because many lawsuits on over consumption were becoming a detriment to the company

345
Q

What is the Complete Scarsdale Medical Diet?

A

High protein diet

346
Q

What is the Pritikin principle?

A

Calorie dense diet that is high carb and low fat

347
Q

What is the Atkin’s Essentials diet?

A

High protein and high fat with low carbs

348
Q

What happens when you exclude one or more of the food groups?

A

You put someone into negative energy balance

349
Q

What is RMR?

A

Resting Metabolic Rate

350
Q

What is RMR dependent on?

A

Body mass composition and amount of lean tissue

351
Q

How is RMR measured?

A
  1. Sleep at home
  2. Come to lab
    - -> slightly elevated
352
Q

What is BMR?

A

Basal metabolic rate

353
Q

Who is BMR useful for?

A

Dieticians

354
Q

How is BMR measured?

A
  1. Sleep at lab
  2. Measure in lab
    - -> Lower than RMR and more accurate
355
Q

What is TEF?

A

The total thermic effect of food

356
Q

What constitutes TEF?

A

Chewing, breakdown, and excretion of food throughout the day

357
Q

What is PAL?

A

Physical activity levels varying by person

358
Q

What is NEAT?

A

Non exercise activity thermogenesis - fidgeting factor

359
Q

What is exercise?

A

Purposeful PA

360
Q

What is TEE?

A

Adding up TEF, RMR, and PAL

361
Q

What does TEA/PAL take up in EE over 24 hours?

A

About 15-30%

362
Q

Is TEA variable?

A

Yes - you have control over this part of your TEE and it can vary up and down dependent on own activity levels

363
Q

What does TEF take up in EE over 24 hours?

364
Q

What does RMR take up in EE over 24 hours?

A

About 60 to 75%

365
Q

What is the disuse affect on EE?

A

Body goes into disuse and decreases RMR, TEF, and TEE

366
Q

What is the PA/exercise effect on EE?

A

Body increases RMR, TEF, and TEE

367
Q

What happens when you are highly active in terms of your viscera?

A

You have a quicker GI transit for the TEF

368
Q

What happens when you are highly active in terms of your viscera?

A

You have a quicker GI transit for the TEF

369
Q

How much muscle tissue is lost during weight loss in obese patients?

370
Q

How much muscle tissue is lost during weight loss in bariatric surgery candidates?

371
Q

How much of a calorie drop in RMR does a kg of body weight lost amount to?

A

20 cal/d drop in RMR

372
Q

If you lose 20kg, how much will your RMR be reduced by each day?

A

400cals/day

373
Q

Why does the RMR go down in general post obesity?

A

There is less of the person to sustain after losing weight so RMR drops to account for the weight lost

374
Q

What effect does exercise have on RMR?

A

More muscle creates a higher RMR

375
Q

Why is there an increased RMR during exercise?

A

The body has a greater ability to burn and use metabolic rate when there are more muscles to help out

376
Q

Why do older people have slower metabolisms?

A

You lose muscle as you age

377
Q

What reduces RMR?

A

Prolonged caloric restriction

378
Q

When you are prolonging calories, what kind of energy balance does that put you in?

A

Negative energy balance for a long time period

379
Q

Why does prolonged caloric restriction decrease RMR?

A

There is nothing to burn inside the body so the RMR will try not to burn anything

380
Q

If you have severe caloric restriction, how much is your RMR reduced?

381
Q

What kind of response do you see in regular exercise that is similar to prolonged caloric restriction?

A

Self preservation type of stress reponse

382
Q

Is a more muscular person or a more fatty person have a faster RMR?

A

A muscular person

383
Q

If you are severely obese, what is your RMR like?

A

It is not fast

384
Q

Why do obese people have slow RMR?

A

There is little blood flow to the fat so it does not metabolize calories as easily which put all the stress on the skeletal region

385
Q

Why would obese people when losing weight decrease their RMR further?

A

There is less SA to use energy on

386
Q

What is a secular trend?

A

Remaining consistent over the long term (1960-1970-1980-1990)

387
Q

What has been the secular trend in diet from 1950 to 1990?

A

Energy and fat intake have maintained the same or slightly decreased

388
Q

What has been the secular obesity trend from 1950 to 1990?

A

Obesity has increased

389
Q

What has been the secular trend in cars per household from 1950 to 1990?

A

It has increased

390
Q

What has been the secular trend in TV viewing hours from 1950 to 1990?

A

It has increased

391
Q

What does the increase in obesity most probably mirror?

A

It mirrors the prevalence of inactivity and sedentarism over one’s diet

392
Q

Do patterns in activity better explain obesity?

393
Q

What study did NHANES do in 1998 that attracted a lot of media attention?

A

Skinfolds in relation to TV watching

394
Q

What were the results of the NHANES 1998 study on Skinfolds relating to TV watching?

A

As the amount of TV watching increases to over 4 hours, the amount of skin folds also increases

395
Q

What gender is an increase in skin folds more prevalent in?

396
Q

How much TV are children currently watching?

A

Approximately 4+ hours every day OR they are spending 4+ hours on their screens/TV total every day

397
Q

Is the TV a cue to eat?

A

Watching more TV causes an increase in caloric intake for US children

398
Q

Which gender does the relationship between hours of TV watched and caloric intake affect most?

399
Q

What % of US adults over 18+ are doing irregular activity?

A

45% - almost every 1 in 2

400
Q

What constitutes irregular activity?

A

Weekend exercisers

401
Q

What % of US adults over 18+ are doing regular sustained activity?

A

25% - every 1 in 4

402
Q

What % of US adults over 18+ are doing no activity?

A

30% - every 1 in 3

403
Q

What kind of exercise prescription has the greatest effect in fitness but can be very time consuming?

A
  1. Vigorous
  2. Sustained and uninterrupted
  3. Done on 3-5 days of the week
  4. Sophisticated by receiving advice from an exercise professional
404
Q

What is exercise known as in current times?

A

The art of converting big meals and fattening snacks into back strains and pulled muscles by lifting heavy weights that do not need to be moved or running when no one is chasing you

405
Q

What are the reactions of people who have not exercised in 30-40 years?

A

They are typically less excited than someone who does exercise normally

406
Q

Who receives the greatest health benefits?

A

More active active people

407
Q

Who receives the greatest gains of health benefits?

A

Couch potatoes who are made to be more active

408
Q

What kind of relationship exists between health benefits and PA?

A

A parabolic curve that increases health benefits as PA goes up - not necessarily dose response yet

409
Q

What is the order of who receives the most initial gains of health benefits?

A

Sedentary –> moderately active –> active

410
Q

What kind of theoretical pattern of PA would a sedentary individual have over 24 hours?

A

They would never hit above 2 METS the whole day

411
Q

What kind of theoretical pattern of PA would a leisure time exerciser have over 24 hours?

A

They would expend about 10-11 METS for 30 to 40 minutes but then live the same sedentary lifestyle for the rest of the day around 2-3 METS

412
Q

What kind of theoretical pattern of PA would a lifestyle exerciser have over 24 hours?

A

They would be participating in activities all throughout the day by walking to bus stop, jogging, taking stairs, walking after dinner etc.

413
Q

What kind of study did Dr. Andersen hold in terms of treating obesity?

A

He looked at how lifestyle vs. programmed exercise affected the WL of obese people

414
Q

Who were the subjects of Dr. Andersen’s study on treating obesity?

A
  1. 40 obese women assigned to either a diet plus programmed aerobic exercise or diet plus increased lifestyle activity
  2. Diet consisted of 1200kcal/d on BCD diet
415
Q

How long did Dr. Andersen’s study last on treating obesity?

416
Q

What did all subjects of Dr. Andersen’s study on treating obesity receive?

A

Weekly behavioural counselling from a clinical psychologist

417
Q

What were the results of WL in Dr. Andersen’s study on treating obesity?

A

Both groups lost approximately the same weight with aerobic exercises losing slightly more

418
Q

What were the results of serum cholesterol changes in Dr. Andersen’s study on treating obesity?

A

Both experienced decreases in the amount of cholesterol - aerobic group did start with less to begin with so they ended with less than the aerobic group

419
Q

What were the results of total treadmill time in Dr. Andersen’s study on treating obesity?

A

Both groups improved their fitness in clinically meaningful and significant ways over the 16 weeks

420
Q

What was the overview after week 16 and to a year later at week 68 in Dr. Andersen’s study on treating obesity?

A
  1. Women continued to attend the aerobic workouts because they had 95% turnouts on 3 days of the week during the study and continued to like their teacher and program
  2. Aerobic group had regained slightly more weight than the lifestyle group
  3. Lifestyle group had acquired new habits relevant to lifelong sustainability
421
Q

What are the Surgeon General Report Guidelines critical for?

A

Long term weight control

422
Q

What does the SGR suggest for activity during the week?

A

About 30 minutes of moderate intensity every day or 30 minutes of vigorous intensity every week

423
Q

What occurred 12 weeks post treatment weight change in Dr. Andersen’s study on treating obesity?

A
  1. Control group - increased weight
  2. Lifestyle group - managed to stay at a 0 balance difference between weight change
  3. Aerobic group - managed to continue losing weight
424
Q

What were these post treatment weight changes in Dr. Andersen’s study on treating obesity in accordance with?

A

The percentage of weeks that met or exceed SGR guidelines

425
Q

What is the Harris and Benedict equation and when did they patent it?

A

It is a BMR equation based on weight, height, and age and was founded in 1919

426
Q

What is the metric BMR formula for women?

A

BMR = 655 + (9.6 x kg) + (1.8 x cm) - (4.7 x years)

427
Q

What is the metric formula for men?

A

BMR = 66 + (13.7 x kg) + (5 x cm) - (6.8 x years)

428
Q

What happens to BMR as height and weight goes up?

A

BMR goes up

429
Q

Why does metabolism go down as you age?

A

Less lean body mass

430
Q

What happens to BMR as age goes up?

A

BMR goes down

431
Q

How many pounds of tissue do you lose between 25 and 55?

A

1/2 lb each year - 15lbs total

432
Q

Why is the Harris and Benedict formula accurate?

A

It calculates caloric needs based on height, weight, and age rather than just BW alone

433
Q

What is the only factor that Harris and Benedict omit?

A

Lean body mass and thus the ratio of muscle to fat the body has

434
Q

Do leaner bodies need more calories than bodies that are not as lean?

435
Q

Why is the HB formula not accurate in very muscular people?

A

It will underestimate muscular people’s caloric needs

436
Q

Why is the HB formula not accurate for very fat people?

A

It will overestimate fat people’s caloric needs

437
Q

How can you determine daily total caloric needs from the HB formula?

A

Multiply the BMR by the appropriate activity factor

438
Q

What is the activity factor for a sedentary person?

A

Little to no exercise = 1.2

439
Q

What is the AF for a lightly active person?

A

Light activity on 1 to 3 days of the week = 1.375

440
Q

What is the AF for a moderately active person?

A

Moderate activity on 3 to 5 days of the week = 1.55

441
Q

What is the AF for a very active person?

A

High intensity activity on 6 to 7 days of the week = 1.725

442
Q

What is the AF for an extra active person?

A

2x regular high intensity training = 1.9

443
Q

What does the calculation of BMR x AF mean?

A

It shows the total number of calories needed in order to maintain current weight

444
Q

What can you do once you know the number of calories needed to maintain your weight?

A

You can evaluate the number of calories needed to eat in order to gain or lose weight

445
Q

What does caloric surplus indicate?

A

Weight gain

446
Q

What does a 500 cal deficit indicate?

A

Weight loss

447
Q

What 3 things that occur when you reduce caloric intake only by diet?

A
  1. Lose more body weight than just exercise
  2. Lose body fat but not as much as with exercise
  3. Lose some fat free body mass
448
Q

What are 3 things that occur when you reduce caloric intake by exercise?

A
  1. Lose body weight but not as much as with diet
  2. Lose more body fat than just diet
  3. Gain most fat free body mass
449
Q

What are 3 things that occur when you reduce caloric intake by a combination of exercise and diet?

A
  1. Lose most body weight
  2. Lost most body fat
  3. Gain some fat free body mass
450
Q

What is lean tissue?

A

Metabolically active tissue

451
Q

What period is most difficult for lean tissue to thrive?

A

After treatment

452
Q

What do individual studies show?

A

Large variability in results

453
Q

When were the most major research review studies?

A

In the 70’s/80’s/90’s

454
Q

What did Epstein and Wing find out about weight change with exercise alone?

A
  1. Body mass kg/week = -0.09

2. Fat mass kg/week = NA

455
Q

What did Wilmore find out about weight change with exercise alone?

A
  1. Body mass kg/week = -0.06

2. Fat mass kg/week = -0.13

456
Q

What did Ballor/Keesey find out about weight change with exercise alone?

A
  1. Body mass kg/week = -0.06

2. Fat mass kg/week = -0.09

457
Q

What happens to BMR over time?

A
  1. Children have very high BMR

2. Decreases due to a loss of lean tissue

458
Q

Who has a higher BMR?

459
Q

What is a typical change in body mass through exercise?

460
Q

What is a typical change in body mass through diet?

461
Q

What is a typical change in body mass as a combination of diet and exercise?

462
Q

What prescription is best for losing weight?

A
  1. Exercise and diet
  2. Diet
  3. Exercise
463
Q

If someone is running at 12km/h at 7.46miles/h and 8:02 mins/mile, what will happen as he keeps running?

A

He will continue to lose a greater net EE per the hour of his horizontal running as he continues to do more miles

464
Q

If a 70kg man was running at 7.46miles/h, and was losing 112 kcal every mile, how much kcal would he lose in an hour?

A

7.46x112 = 835 total kcals

465
Q

What is Hardee’s 1420 Calorie Burger called?

A

Monster Thickburger

466
Q

Describe the Monster Thickburger

A

2 and 1/3 pound slabs of angus beef, bacon, cheese, and mayo, on a buttered bun

467
Q

How much does the Monster Thickburger cost?

A

$5.49 alone or $7.09 with fries + drink

468
Q

How many calories are in a Big Mac?

469
Q

What is the net expenditure of a 70kg man on a 3 mile walk?

A
  1. Gross expenditure = 300 cals
  2. RMR = -50 cals
  3. Exercise he would have been in had he not walked = -50 cals
    TOTAL = 200 cals
470
Q

What is the single most important key point for PA?

A

Maintenance

471
Q

What happens when you maintain PA?

A

You maintain a consistent and desirable body composition

472
Q

If you golf 2 rounds per week burning 700 kcals each time by walking without a cart, and continue to do this for 5 weeks and then a year, how many calories and how much weight would you lose?

A
  1. 5 weeks - 3500 calories which is 1lb

2. 1 year - 35 000 calories which is 10lbs

473
Q

How many calories equates to 1 pound?

474
Q

How could you lose 1 pound in a week?

A

By restricting 500 calories each day

475
Q

If you combine losing weight with exercise, what modifications do you make to your diet?

A
  1. Much less restriction

2. No restriction at all

476
Q

What are 4 guidelines for managing weight?

A
  1. Lifestyle behaviour changes in diet and PA
  2. Psychological and behavioural considerations
  3. Caloric intake
  4. Caloric expenditure
477
Q

Which consideration has the most effect on WL?

A

Long term behavioural changes

478
Q

How can you modify your behaviour?

A
  1. Self monitoring in diaries
  2. Stimulus control by identifying circumstances that stimulate eating
  3. Reward reinforcement by formal rewards
  4. Nutrition education
  5. PA
  6. Cognitive restructuring where you counter negative thoughts and set reasonable goals
479
Q

How do you lose weight?

A

Expending more calories than consuming

480
Q

How can you expend more calories than you consume?

A
  1. Consume fewer
  2. Combine exercise and diet
  3. Caloric intake < caloric expenditure
481
Q

What will do the best job at increasing caloric expenditure?

A

Weight control mechanism habits paired with other healthy habits

482
Q

What happens to BMR in WL?

A

It decreases

483
Q

What happens to RMR in WL?

A

It increases or boost during exercise

484
Q

What are 4 WL misconceptions?

A
  1. Quick fixes
  2. Fad diets
  3. Cellulite
  4. Spot reduction
485
Q

What is spot reduction?

A

Local, contracting skeletal muscle believed to burn fat only in this area

486
Q

Is spot reduction valid?

A

No - you burn fat in several other areas than just the target spot

487
Q

What are 6 reasons why Freshmen gain 15 pounds in university?

A
  1. On your own and free to eat whenever
  2. Pile on portions of unhealthy foods
  3. Adapting to stress and overeating
  4. Using sodas and lattes to say awake
  5. Meal skipping
  6. More alcohol consumption
488
Q

How can you gain weight?

A

Must eat about 400 to 500 more cals per day than being expended to gain at least 1lb per week

489
Q

What should you do while trying to gain weight?

A
  1. Exercise regularly

2. Include weight training to ensure that WG is lean weight

490
Q

What has happened to ideal body weight perceptions since the 1950?

A

As weight increases, it becomes less ideal and there is a larger difference between actual and ideal BW

491
Q

What is disordered eating?

A

Not being able to eat properly

492
Q

What are 2 examples of disordered eating?

A
  1. Bulimia

2. AN

493
Q

What have some people proposed as a mechanism to stop eating and lose weight?

494
Q

Who is disordered eating more prominent in?

495
Q

What are the 3 components contributing to disordered eating?

A
  1. Genetics
  2. Environmental
  3. Psychological
496
Q

What study did Beavers et. Al do in 2017?

A

They studied the effect of exercise type during intentional weight loss on body composition in older adults with obesity

497
Q

What was the objective of the Beavers et. Al study in 2017?

A

To maximize fat loss at 5 to 10% and minimize lean mass loss at 10 to 50%

498
Q

Who were the subjects in the Beavers et. Al study of 2017?

A

60 to 79 year olds with a BMI of >28 but <42 and who were maintaining less than 60 minutes of moderate PA per week

499
Q

What was the 1st effect found in Beavers et. Al study?

A
  1. Superior ability of WL and RT vs. WL and AT when trying to conserve lean body mass
500
Q

How much lean body mass was lost under all 3 conditions in effect #1 of Beavers et. Al study?

A

WL and RT = 10%
WL = 16%
WL and RT = 0.8kg
WL and AT = 1.6kg

501
Q

What was the 2nd effect found in Beavers et. Al study?

A
  1. WL and RT or AT resulted in greater overall reductions in total fat mass loss than WL alone
502
Q

What was the 3rd effect found in Beavers et. Al study?

A
  1. Fat mass loss is primarily responsible for WL associated improvements in mobility whereas lean mass lass is primarily responsible for WL associated with declines in strength
503
Q

What was the conclusion of the Beavers et. Al study?

A

WL and RT yield the greatest weight loss and most favourable shift in body composition because you are conserving lean mass and getting rid of fat mass

PA & Health 330 (4 decks)

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