Solns prob set #3

# Solns prob set #3 - BIPN 108 Physiology of Exercise Problem...

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BIPN 108, Physiology of Exercise, Problem Set #3 solutions Page 1 1. Go to www.MyPyramid.gov, and write down the dietary recommendations for yourself. a. I hope that you found this exercise interesting. How close is your usual diet to this recommendation? b. Here are my graphs: Notice that gender doesn’t make much difference in the recommendations for children, but it does in adults. Why might that be true? c. The recommendations in MyPyramid do not take body size into account, so they are intended as guidelines for “average” sized people. A woman who is playing in the WNBA is likely to be tall--bigger than the average sized woman of her age, so she would have to scale up the recommendations, although the relationship between the various categories of food would still be useful to know. Similarly, a smaller than average sized woman would want to scale down the recommendations, keeping the relationships between food categories in mind. 2. To answer this question you need to read numbers from the graph in this figure, interpolating between the values on the Y axis to determine values for the ages you are asked to consider. a. The average caloric intake for 2-year-old boys and girls is about 1430 Calories per day. The average caloric intake for 5 year-old-boys and girls is about 1670 Calories per day. b. To normalize for body size we divide the Calories/day by the body mass. For 2-year- olds, that is 1430 Calories per day divided by 13.5 kg, or 106 Calories/kg-day.

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BIPN 108, Physiology of Exercise, Problem Set #3 solutions Page 2 (Notice that we don’t talk about fractional Calories; we round off to the nearest Calorie.) The value for 5-year-olds is 1670 Calories/day divided by 18.2 kg, or 92 Calories/kg-day. c. From the graphs, the average caloric intake of a 20-year-old man is 3025 Calories/day, and the average intake of a 20-year-old woman is 1900 Calories/day. d.
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Solns prob set #3 - BIPN 108 Physiology of Exercise Problem...

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