When someone attempts to lose weight by decreasing caloric intake while at the same time increasing physical activity, that person is trying to be in a state of
A. negative energy balance.
B. positive energy balance.
C. neutral energy balance.
Q. 2The 2010 Dietary Guidelines for Americans recommend that adults engage in at least _____ of moderate-intensity aerobic physical activity.
A. 15 days per month
B. 4 days per week
C. 150 minutes per week
D. 60 minutes per day
Q. 3Physical fitness can reduce blood pressure, lower blood glucose levels, and lower blood lipid levels in
A. healthy-weight individuals.
B. overweight individuals.
C. obese individuals.
D. All of the above
Q. 4Components of a healthy weight-loss program include all of the following except:
A. choosing nutritious foods in moderation.
B. choosing foods very low in fat.
C. setting reasonable goals.
D. increasing daily physical activity.
Q. 5How does leptin participate in body weight regulation?
A. Leptin directly instructs adipose tissue to undergo hypertrophic growth during times of high energy intake.
B. Leptin signals the release of neurotransmitters that promote satiety and energy expenditure.
C. Increased leptin levels result in positive energy balance.
D. Leptin directly instructs muscle tissue to expend less energy.
Q. 6Leptin is a satiety-inducing hormone produced by the _____.
A. hypothalamus
B. pancreas
C. adipose tissue
D. thyroid gland
Q. 7Exercise is defined as
A. planned, structured, and repetitive bodily movement intended to improve or maintain physical fitness.
B. any bodily movement that results in energy expenditure.
C. coordinated whole-body movements that require energy expenditure in both upper and lower extremities.
D. intensive activity lasting at least 75 minutes per day.
Q. 8Factors that contribute to the likelihood of becoming obese include
A. large portion sizes.
B. consumption of energy-dense foods, such as most fast foods.
C. a sedentary lifestyle.
D. genetics.
E. All of the above
Q. 9The method of assessing body composition considered to be the gold standard is
A. underwater weighing.
B. dual-energy x-ray absorptiometry (DEXA).
C. bioelectrical impedance.
D. skinfold thickness.
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