ACE ACE Exercise Science & Physiology 3

Question 1

Which training principle states that fitness gains are lost when training is discontinued?

Accepted Answer

Reversibility (detraining)

Answer

The principle of reversibility (detraining) indicates that physiological adaptations diminish when regular exercise stimulus is removed.

Question 2

What happens to muscle glycogen stores during a prolonged, high-intensity group fitness class?

Accepted Answer

They are progressively depleted, reducing high-intensity performance

Answer

Muscle glycogen is the primary carbohydrate fuel for intense exercise, and its depletion leads to fatigue and a reduced ability to sustain high-intensity effort.

Question 3

Which physiological mechanism allows trained muscles to use oxygen more efficiently during aerobic exercise?

Accepted Answer

Increased mitochondrial density and oxidative enzyme activity

Answer

Aerobic training increases the number and size of mitochondria and upregulates oxidative enzymes, enabling muscles to produce more ATP aerobically.

Question 4

What is the recommended general guideline for hydration during a moderate-intensity group fitness class?

Accepted Answer

Drink 7–10 oz of fluid every 10–20 minutes during exercise

Answer

The American College of Sports Medicine recommends consuming 7–10 oz of fluid every 10–20 minutes during exercise to maintain hydration.

Question 5

How does regular resistance training affect the basal metabolic rate (BMR)?

Accepted Answer

It increases BMR by preserving and building metabolically active muscle tissue

Answer

Resistance training builds lean muscle mass, which is metabolically active tissue, leading to a modest but meaningful increase in basal metabolic rate over time.

ACE - American Council on Exercise Group Fitness Practice Test

ACE - American Council on Exercise Group Fitness Practice Test

ACE ACE Exercise Science & Physiology 3