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Nutr-484-Exercise phys > Lab Test 2 (lab 5) > Flashcards

Lab Test 2 (lab 5) Flashcards

1
Q

Two names for UWW

A

underwater weighing

hydrostatic weighing

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2
Q

UWW is this type of model

A

2 compartment model

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3
Q

what are the two compartments

A

fat weight / fat-free weight

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4
Q

T/F: UWW is the gold standard and criterion method(measure)

A

T

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5
Q

UWW is the best method yet to do this

A

measure body composition

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6
Q

standard error of estimate for UWW

A

+or- 2%

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7
Q

Three types of anthropometric measurements

A

skinfolds
circumferences
diameters

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8
Q

Benefits of anthropometric measurements

A

portable

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9
Q

standard error of estimate for anthropometric measurements

A

+ or - 5%

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10
Q

Why measure body comp 3

A

health implications
body weight recommendations
describe populations

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11
Q

T/F: risk of diabetes often exhibits unique fat distribution

A

T

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12
Q

must know body comp factors to accurately and safely make body weight recommendations, athletic or otherwise is an example of

A

why measure body composition

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13
Q

what is a major drawback of body weight recommendations that are made using height and weight tables

A

do not consider FFW vs FW

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14
Q

Why would you want to use body comp to describe populations

A

determine risk factors for ethnic groups, sexes.

Determine body comp of athletic populations

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15
Q

fat component of UWW is composed of this

A

adipose and neural tissue

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16
Q

two basic forms of adipose tissue

A

subcutaneous

intermuscular and/or intravisceral

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17
Q

density of FW

A

0.90 g/ml (kg/L)

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18
Q

This is defined as collective term consisting of bone, muscle, tendons, viscera, connective tissue, etc

A

FFW or FF component

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19
Q

Density of FFW

A

1.1 g/ml (kg/L)

20
Q

FFW density is considered this

A

collective density

21
Q

symbol for body density

A

Dsub(b)

22
Q

Body density range

A

0.90000 - 1.10000 g/ml

23
Q

when working with body density always round calculations to this value

A

0.00000 or 1/10,000

24
Q

energy content of fat

A

approx 9kcal/g

25
Q

3 examples of positive features of fat

A

needed in neural development of infants, toddlers and adolescents
insulation
protection

26
Q

essential fat for males

A

3-5%

27
Q

desirable fat for males

A

10-15%

28
Q

essential fat for females

A

10-12%

29
Q

desirable fat for females

A

15-20%

30
Q

Reasons women need more body fat than men

A

reproductive functions such as estradiol and progesterone production

31
Q

Healthy fat % range in males (overall)

A

10-20%

32
Q

healthy fat % range in females (overall)

A

20-32%

33
Q

density =

A

mass/volume

34
Q

T/F: we are solving for body density when doing UWW

A

F, body volume

35
Q

We use UWW to determine this , which allows us to calculate this

A

body volume, which allows us to calculate body density

36
Q

From body density we can calculate this

A

%FAT

37
Q

What is the equation to calculate % fat

A

brozek’s equation

38
Q

a body submerged in water will lose an amount of weight proportional to its bodies volume

A

archimedes principle

39
Q

We need to account for this in the lungs with UWW

A

residual volume of air

40
Q

air is in these two places of the body

A

lungs

gastrointestinal tract

41
Q

RV can be estimated from this

A

Vital capacity

42
Q

The volume of air left in the lungs after maximal expiration

A

residual volume

43
Q

the maximal volume of gas that expelled from the lungs voluntarily following a maximal inspiration

A

vital capacity

44
Q

volume of air left in the GI tract

A

0.10 L

45
Q

must know these three variables for UWW

A

water temp
spirometer air temp
tare weight

46
Q

See last page of Lab 5 notes for steps for determining % body fat from UWW

A

okay

Nutr-484-Exercise phys (14 decks)

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