ACE ACE Exercise Science & Physiology 1

Question 1

What is the term for the body's ability to consume and use oxygen during sustained exercise?

Accepted Answer

VO2 max

Answer

VO2 max is the maximum rate at which the body can consume and utilize oxygen during intense exercise.

Question 2

Which energy system is the primary source of ATP during the first 10 seconds of high-intensity exercise?

Accepted Answer

Phosphocreatine (ATP-PC) system

Answer

The phosphocreatine (ATP-PC) system provides immediate ATP for short-duration, high-intensity efforts lasting up to about 10 seconds.

Question 3

What physiological response is known as the 'afterburn effect' following vigorous exercise?

Accepted Answer

EPOC (Excess Post-exercise Oxygen Consumption)

Answer

EPOC refers to the elevated oxygen consumption that continues after exercise ends as the body returns to its resting state.

Question 4

Which muscle fiber type is most recruited during a low-intensity, long-duration group fitness class?

Accepted Answer

Type I slow-twitch

Answer

Type I (slow-twitch) muscle fibers are highly fatigue-resistant and are preferentially recruited during prolonged, low-intensity aerobic activity.

Question 5

What is the Karvonen formula used to calculate in exercise programming?

Accepted Answer

Target heart rate reserve

Answer

The Karvonen formula uses heart rate reserve (HRmax minus resting HR) to calculate a personalized target heart rate range for training.

ACE - American Council on Exercise Group Fitness Practice Test