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1. About how many cups (8 fluid ounces or about 250 ml) of water are lost in the sweat during an hour of jogging at a moderate pace under average conditions by the typical adult?
2. About how much salt (NaCl) is lost in the sweat by the average person during exercise?
2.6 mcg/liter sweat
2.6 mg/liter sweat
2.6 g/liter sweat
3.How does the sweat rate of children compare to the sweat rate of adults (amount of sweat per unit of skin surface area)?
children sweat less
children sweat more
there is no difference
4. How does the concentration of salt in the sweat of children compare to that of adults?
lower in children
higher in children
5. Compared to adults, when children lose two percent of their body weight from sweat loss, how does it typically affect their internal core temperature?
Core temperature increases to greater levels in children than in adults.
Core temperature will be lower in children than in adults.
There is no difference between children and adults in core temperature change.
6. Donald decides he needs to lose about 5 pounds. He learned that it takes a Calorie deficit of 3500 kcal to lose one pound of fat. So, he figures that if he eats 500 kcal/day less than usual, he should lose one pound per week. Weighing himself every day at the same time in the gym, he is pleasantly surprised to find that he lost 3 pounds at the end of the first week. What most likely caused this to occur?
Although it always takes a 3500 kcal deficit to lose one pound of body weight, Donald may differ greatly from the norm for resting metabolic rate and adaptive thermogenesis.
7. If you calculate the Calorie content of one pound of fat using the standard 9 kcal/gram, the result is 4,086 kcal/pound. Why do we typically use the value of 3,500 kcal/pound of fat?
Nutritionists would rather underestimate than overestimate the rate of weight loss.
The Caloric equivalent of fat in the body is as high as 4,086 only under conditions of very high adaptive thermogenesis.
Along with fat stored in the adipose tissue, there are small amounts of protein, minerals, and water that reduce the energy density of the fat cell contents.
8. About how many miles would the average person (145 lbs) need to jog to expend the energy contained in one pound of body fat?
9. Weight loss may not occur in the early stages of an exercise program because __________.
muscle mass may be increasing while fat mass is decreasing
muscles use less energy when a person in untrained
energy intake typically increases more than energy expenditure
10. Which of the following statements about gaining body weight is/are correct?
Eating 3500 kcal/week above expenditure combined with progressive resistance exercise can result in a gain of one pound of muscle/week.
Eating 3500 kcal/week above expenditure combined with a sedentary lifestyle can result in the gain of one pound of fat/week.
Eating an extra 14 grams of protein/day is all that is needed to gain an extra pound of muscle/week.
Human Nutrion, Food & Animal Sciences · University of Hawai`i at Mānoa
1955 East-West Road · Honolulu, HI 96822
This page was last modified on: 08/08/2011