Exam 9: Physical Activity and Health

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The FDA permits manufacturers of ergogenic aids such as carnitine and ginseng to market them to consumers without testing them for _______________ and _______________.

(Short Answer)
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_____ refers to the ability of the circulatory and respiratory systems to supply oxygen and nutrients to working muscles during sustained physical activity.

(Multiple Choice)
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Training increases the VO2 max, which may help delay fatigue.

(True/False)
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The most important reason why muscles tire more quickly during high-intensity workouts than they do during low-intensity workouts is lack of available _____.

(Multiple Choice)
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_____ is defined as “bodily movement that is produced by the contraction of skeletal muscle and that substantially increases energy expenditure.”

(Multiple Choice)
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When would it be beneficial for an athlete to consume a sports drink containing carbohydrates and electrolytes?

(Multiple Choice)
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Which of the following minerals is required for energy metabolism and for the maintenance, repair, and growth of muscles?

(Multiple Choice)
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Brian is thinking of taking creatine supplements to improve his performance as a marathon runner. The dietitian advises him that creatine supplements _____.

(Multiple Choice)
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Brad’s girlfriend is supportive of his taking up cycling because she knows that physical activity can help strengthen heart muscles and _____.

(Multiple Choice)
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Training decreases the number and size of mitochondria.

(True/False)
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Glycolysis depends solely on which fuel source?

(Multiple Choice)
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_____ is the ability to perform moderate to vigorous levels of activity without undue fatigue.

(Multiple Choice)
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How much energy is expended by the body at rest?

(Multiple Choice)
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To improve cardiovascular fitness, _____ workout sessions per week are optimal.

(Multiple Choice)
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Consuming protein-rich foods alone appears to enhance glycogen repletion.

(True/False)
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Your roommate is flushed, thirsty, irritable, and unable to pass urine. She is most likely:

(Multiple Choice)
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Sports anemia requires:

(Multiple Choice)
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Evidence supports the notion that creatine supplementation may enhance high-intensity, short-duration athletic performance such as sprinting or power lifting.

(True/False)
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Which statement is true?

(Multiple Choice)
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How long should healthy-weight adults exercise at a low to moderate intensity level in order to maintain cardiovascular fitness?

(Multiple Choice)
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