1. Which of the following is explained by cardiovascular drift? A. A decrease in

Question

1. Which of the following is explained by cardiovascular drift?

A. A decrease in heart with prolonged exercise duration at constant intensity

B. An increase in stroke volume with prolonged exercise duration at constant intensity

C. Both

D. Neither

2. Runner A runs at 16 km/hr with a VO2 of 45 ml/kg/min. Runner B runs at 16 km/hr/ with a VO2 of 40 ml/kg/min. Which runner has a better runing economy?

A.Runner A

B.Runer B

C. They are the same

D. Can't determine from the information provided

3.For a given individual, which of the following occur at the same exercise intensity

A. Lactate threshold and VO2 max

B. Ventilatory threshold and VO2max

C. Lactate ventilatory and ventilatory threshold

D. All three occur at the same intensity(lactate threshold, ventilatory threshold,VO2max)

4.WHich units for VO2max have the smallest gender gap?

A. L/min

B. ml/kg/min

C. ml/(kg fat-free mass)/min

5. WHich of the following statements is FALSE?

A.Lactic acid is the product of aerobic metabolism

B. Lactic acid is made in muscle cells during exercise

C.Lactic acid dissociates into lactate and a hydrogen ion

D. None, they are all true statements

6.True or False: Smaller People will have more difficulty at the same treadmill speed &grade compared to a larger individual

7.Which of the following explain the why maximal heart rate decreases with age

A. lower intrinsic heart rate in older adults

B.Lower B adrenergic responsiveness in older adults

C. Both

D. Neither

8. Vertical jump height is primarily dependent on which energy system?

A. creatine phosphate

B. anaerobic glycolysis

C. Aerobic metabolism

9.Two people of different body mass jump the same height. Which subjects has a higher relative power output?

A. The heavier subject

B. The lighter subject

C. They are the same

D. Can't detrmine from information given

10. What gas is used to measure pulmonary diffusing capacity

A. Oxygen

B. Carbon Dioxide

C. Carbon monoxide

D. Nitrogen

Explanation / Answer

1. D

Cardiovascular drift is described as the physiological changes during the prolonged exercise. During prolonged exercise, stroke volume steadily drops and the heart rate increases. Cardiac output is a function of stroke volume times heart rate. Therefore, cardiac output may remain constant during prolonged exercise despite the increase in heart rate due to compensation from a drop in stroke volume.

Therefore neither of the option A or B is correct

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