Lecture 12 - Diet, Weight Loss and Exercise

Question 1

weight loss and weight management market value

Answer 1

• valued at 192.2 billion in 2019
• projected to reach 295.3 billion by 2027

Question 2

why is losing weight so hard considering its a pretty straight forward concept

Answer 2

we have an emotional attachment to what we eat
- there’s a kind of jame that I like at superstore
- after a bad midterm I don’t want to cook something nice I just want something quick and easy

Question 3

% of men and women that are 20% or more of desirable weight and why is this problematic

Answer 3

desirable weight = if you’re X build then you should be Y weight
- 27% of women are 20% or more of desirable weight
- 24% of men are 20% or more of desirable weight
* this is problematic because obesity is linked to may diseases and conditions w/significant threats to physical health but is also linked to mental health concerns (Self esteem, self efficacy, body image)

Question 4

what is the best predictor on long term weight management (also an important variable with losing weight)

Answer 4

Regular exercise
- an important variable in losing weight but also the best predictor of WM
- it has been demonstrated that is you lose weight w/out exercising (dieting), you are almost certain to follow a pattern of weight regain (how long can you keep up the diet)
research shows that diet combined with reg exercise leads to much better WL maintenance

Question 5

Kaymon’s research study

Answer 5

examined 2 groups of women
1. women who had been overweight, lost the weight and kept it off
2. women who were overweight, lost it then regained it
- 90% of Group 1 engaged in regular PA
- only 20% of Group 2 engaged in regular PA
suggested that diet and exercise both have a similar short term effect on WL

Question 6

Grillo’s research study

Answer 6

160 police officers were randomly one of four diets then were placed in a group that exercised, or a non exercise group
- study found that after 8wks, there was no significant difference in any of the groups; they all lost weight
- after 18mo F/U and reweigh, the weight had returned for those who did not exercise, regardless of the type of diet they had
- in contrast the exercise groups maintained their WL
exercise works best for the WL maintenance on a long term basis

Question 7

research suggests that ppl on a diet are almost always ________

Answer 7

doomed in the end to end up back where they started
- how long can you keep up the diet

Question 8

psychological barriers to WL

Answer 8

• previous negative experiences (teased by piers, poor performance, feelings of inadequacy)
• lack of confidence
• lack of knowledge
• social physique anxiety

Question 9

Excessive exercise

Answer 9

• exercise can become compulsive when performed in pursuit of excessive thinness
• an enduring fear about being fat is a hallmark of the eating disorders anorexia nervosa and bulimia nervosa

Question 10

Prussin and Harvey

Answer 10

reported that 19% of female runners met the diagnostic criteria for bulimia nervosa in a study of 4000
- 48% of female runners and 21% of male runners said that they were “terrified of being fat”