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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 tallbigger 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 2yearold boys and girls is about 1430 Calories per
day.
The average caloric intake for 5 yearoldboys and girls is about 1670 Calories
per day.
b.
To normalize for body size we divide the Calories/day by the body mass.
For 2year
olds, that is 1430 Calories per day divided by 13.5 kg, or 106 Calories/kgday.
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View Full DocumentBIPN 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 5yearolds is 1670 Calories/day divided by 18.2 kg, or
92 Calories/kgday.
c.
From the graphs, the average caloric intake of a 20yearold man is 3025 Calories/day,
and the average intake of a 20yearold woman is 1900 Calories/day.
d.
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 Winter '08
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