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

Specificity

Answer

Individuality

Answer

Overreaching

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

They increase steadily throughout the class

Answer

They are replenished by fat oxidation

Answer

They remain stable as protein is preferentially used

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

Reduced capillary density

Answer

Decreased myoglobin concentration

Answer

Lower hemoglobin levels

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

Drink only at the end of class to avoid cramps

Answer

Avoid fluid intake if the class is under 60 minutes

Answer

Drink 32 oz immediately before class and nothing during

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

It significantly decreases BMR

Answer

It has no measurable effect on BMR

Answer

It temporarily lowers BMR due to muscle damage

Question 6

What is the primary purpose of a warm-up before a group fitness class from an exercise physiology standpoint?

Accepted Answer

To elevate body temperature, increase blood flow, and prepare the neuromuscular system

Answer

To increase lactic acid production

Answer

To deplete glycogen stores before the workout begins

Answer

To activate the parasympathetic nervous system