EXSC 191 Exam 2 Questions and
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cardiorespiratory endurance - ✔✔the ability of the heart, lungs, and blood
vessels to deliver adequate amounts of oxygen to the cells to meet the
demands of prolonged physical activity, determines how well essential
systems work together for long periods of physical activity
Basic Cardiorespiratory Physiology - ✔✔heart pumps oxygenated blood to
muscles, heart receives deoxygenated blood from tissues, heart pumps
deoxygenated blood to lungs, reoxygenated blood is pumped through body
arteries - ✔✔elastic/unobstructed, the size of the diameter is under
muscular control, carries oxygenated blood, those that are unfit have a
reduced diameter of become inelastic
veins - ✔✔elastic/unobstructed, carries deoxygenated blood, relies on
pumping action of muscles to facilitate venous return
Oxygen Uptake (VO2) - ✔✔capacity of the body to deliver and utilize
oxygen, higher capacity=greater efficiency
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,maximal oxygen uptake (VO2 max) - ✔✔maximum amount of oxygen the
body us able to use per minute of physical activity, expressed in L/min
factors affecting VO2 max - ✔✔genetics, gender (15%-30% higher in men),
age (decreases 1%/year starting at 25, only 0.5% for active people),
training state, and body composition
health benefits of aerobic fitness - ✔✔reduces risk of early death, coronary
heart disease, and CHD risk factors, protection against health risks
associated with obesity, enhances the ability to perform various tasks,
improves ability to function, associated with a feeling of well-being
aerobic exercise - ✔✔exercise that requires oxygen to produce the
necessary energy for the activity, primary type of exercise that stimulates
improvements in the cardiorespiratory system
Benefits of aerobic exercise - ✔✔higher VO2 max, increase in red blood
cell count, decrease in resting heart rate, increase in cardiac muscle
strength, lower heart rate in workouts, increased number of functional
capillaries, faster recovery time, lower blood pressure/blood lipids, increase
in number, size, and capacity of mitochondria, increase of fat-burning
enzymes
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, Rationale for Cardiorespiratory Assessment - ✔✔- Educate participants
regarding present fitness levels
- To motivate individuals to participate in exercise programs
- To provide a foundation for exercise prescription
- To evaluate improvements achieved through exercise programs and
make adjustments
- To monitor changes in fitness over the years
Poor VO2 max - ✔✔<24.9 in men, <23.9 in women
Fair VO2 max - ✔✔25-33.9 in men, 24-30.9 in women
Average VO2 max - ✔✔34-43.9 in men, 31-38.9 in women
Good VO2 max - ✔✔44-52.9 in men, 39-48.9 in women
Excellent VO2 max - ✔✔>53 in men, >49 in women
1.0 Mile Walk Test - ✔✔for individuals unable to run because of low fitness
levels of injuries, estimates VO2max based on prediction equation that
requires: time to complete course, heart rate at the end of the test, body
weight, and gender
Step Test - ✔✔estimates VO2max based on 3 minute test
-height= 16 1/4"
take 15 sec heart rate between 5-20 seconds into recovery
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