Regulation of body weight is not simply explained. Whenindividuals undergo a weight-loss diet, they often fail to lose theamount of weight predicted by considering only the amount ofcalories consumed. In fact, energy balance is best explained usinga dynamic equation in which changes on one side of the “energyin/energy out” scale result in compensatory metabolic and/orbehavioral changes in the other side. For example, when one beginsa calorie-restricted diet, the metabolic rate often declines sothat weight loss is less than expected.
Given what you have read in your chapter and the informationprovided above, consider the following case study about Bruce, anactive young male.
subject: Bruce, 21y.o. male physicalactivity: running daily, 60-90 minutes
5’10”; 155 lbs; large frame; 11% body fat
24-hour dietary recall:
breakfast: 2 cups Cheerios
1cup nonfat milk
1banana
lunch: turkeysandwich: 3 oz. turkey, 2 slices wheat bread
1apple
12oz. bottled water
snack: 1 apple
dinner: 3 oz. chicken breast
1cup cooked mixed vegetables
½cup white rice
12oz. bottled water
snack: 1 cup Cheerios
1cup nonfat milk
1. What is his BMI? Is this within a healthyrange?
2. What is a healthy weight range for Bruce (usingthe chart in your textbook)?
3. Determine his approximate caloric intake usinghis 24-hour dietary recall.
4. What are his approximate calorie needs for hiscurrent weight and for a healthy weight range?
5. What are your dietary recommendations forBruce?
6. What is your physical activity recommendation forBruce?
7. List any other health or nutrition advice youfeel would be useful to Bruce.
Regulation of body weight is not simply explained. When individuals undergo a weight-loss diet, they often fail to lose
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