Exercise Physiology Essay

480 Words2 Pages
TEST BANK Chapter 1 MEASUREMENT OF WORK, POWER, AND ENERGY EXPENDITURE 1. Work is defined as a. the ability to transform energy from one state to another. b. the ability to utilize oxygen. c. force times distance. d. distance times power output. Ans: c 2. Power is defined as a. the ability to perform work. b. work divided by time. c. work times force. d. force times distance. Ans: b 3. The SI unit for work is the a. joule. b. watt. c. kpm. d. kcal. Ans: c 4. Calculate the power if 600 joules of work are completed in 60 seconds. a. 10 watts b. 660 watts c. 36,000 watts d. Power cannot be calculated with the information provided. Ans: a 5. Calculating the work performed on a cycle ergometer requires that you know all of the following except a. subject’s body weight. b. resistance against flywheel. c. pedaling speed. d. exercise time. Ans: b 6. Direct calorimetry is a means of determining energy expenditure and involves the measurement of a. oxygen consumption. b. heat production. c. ATP hydrolysis. d. carbon dioxide production. Ans: b 7. The energy cost of horizontal running can be estimated reasonably accurately because a. the VO2 of running is always the same. b. the VO2 of horizontal running is always 1 MET. c. the VO2 increases linearly with running speed. d. none of the above. Ans: c 8. The most common technique used to measure oxygen consumption in exercise physiology laboratories is a. closed-circuit spirometry. b. open-circuit spirometry. c. direct calorimetry. d. computer calorimetry. Ans: b 9. A MET is defined as a metabolic equivalent and is equal to a. resting VO2. b. 50% of resting VO2. c. 200% of resting VO2. d. VO2 max. Ans: a 10. Net efficiency is defined as a. work output/energy expended at rest times 100. b. work performed/energy expended above rest

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