ACSM Cardiovascular Fitness 5

Question 1

Which parameter is used to calculate the exercise intensity when using the VO2 reserve (VO2R) method of exercise prescription?

Accepted Answer

Resting VO2 and VO2max

Answer

VO2R is calculated as VO2max minus resting VO2, analogous to heart rate reserve, and target intensity is set as a percentage of that reserve added to resting VO2.

Question 2

According to ACSM, which weekly energy expenditure from physical activity is associated with significant reductions in cardiovascular disease risk?

Accepted Answer

1,000 kcal/week

Answer

Expending approximately 1,000 kcal per week through physical activity is associated with meaningful reductions in cardiovascular disease risk and mortality.

Question 3

A swimmer has a notably lower maximal heart rate compared to when running. What best explains this sport-specific difference?

Accepted Answer

Horizontal body position and reduced gravitational stress lower HR demand

Answer

The horizontal body position and immersion in water enhance venous return and reduce gravitational load, allowing greater stroke volume and a lower maximal HR versus upright running.

Question 4

What does a left shift in the oxyhemoglobin dissociation curve during heavy exercise indicate?

Accepted Answer

Reduced hemoglobin affinity for oxygen, facilitating O2 release

Answer

A rightward shift (Bohr effect), caused by increased temperature, CO2, and H+, reduces hemoglobin's affinity for oxygen, promoting O2 release to working muscles — note: the question states left shift, so reduced O2 release would occur; during heavy exercise the curve actually shifts right.

Question 5

Which method of estimating cardiovascular fitness requires no exercise equipment and uses resting heart rate and age to predict VO2max?

Accepted Answer

Non-exercise VO2max estimation equation

Answer

Non-exercise VO2max estimation equations use demographics such as age, sex, BMI, and resting HR to predict VO2max without requiring the client to exercise.

ACSM Practice Test

ACSM Practice Test

ACSM Cardiovascular Fitness 5