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Chapter 6 - Physiological Responses and Adaptations to Aerobic Endurance Training

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1. A 35-year-old female began an exercise program four months ago in which she has been running on the treadmill four days per week. Which of the following describes the adaptations that are most likely to occur with this program?
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an increase in mitochondrial density and a decrease in submaximal HR
an increase in blood volume and a decrease in insulin sensitivity
an increase in maximal exercise HR and a decrease in capillary density
an increase in resting SBP and decrease in maximal a– O2 difference

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Q1
1. A 35-year-old female began an exercise program four months ago in which she has been running on the treadmill four days per week. Which of the following describes the adaptations that are most likely to occur with this program?
an increase in mitochondrial density and a decrease in submaximal HR
an increase in blood volume and a decrease in insulin sensitivity
an increase in maximal exercise HR and a decrease in capillary density
an increase in resting SBP and decrease in maximal a– O2 difference
60s
Q2
2. Which of the following changes in trained skeletal muscle is an adaptation to chronic aerobic exercise?
increased concentration of aerobic enzymes
decreased capillary density
increased cross-sectional area of type IIa fibers
decreased mitochondria density
60s
Q3
3. Which of the following is most likely to occur as a result of aerobic endurance overtraining?
decreased blood volume
decreased VO2max
increased body fat percentage
increased muscle glycogen stores
60s
Q4
4. Which of the following measures decrease during an acute exercise bout?
blood pH, blood flow to splanchnic region, plasma volume, insulin
catecholamines, glucagon, stroke volume, tidal volume
oxygen consumption, a– VO2 difference, systolic blood pressure, RER
rate–pressure product, stroke volume, mean arterial pressure, hematocrit
60s

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