ACE Exercise Science & Physiology Flashcards
6 cards from real ACE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 ACE Exercise Science & Physiology flashcards as text
What is the term for the body's ability to consume and use oxygen during sustained exercise?
Answer: VO2 max
VO2 max is the maximum rate at which the body can consume and utilize oxygen during intense exercise.
Which energy system is the primary source of ATP during the first 10 seconds of high-intensity exercise?
Answer: Phosphocreatine (ATP-PC) system
The phosphocreatine (ATP-PC) system provides immediate ATP for short-duration, high-intensity efforts lasting up to about 10 seconds.
What physiological response is known as the 'afterburn effect' following vigorous exercise?
Answer: EPOC (Excess Post-exercise Oxygen Consumption)
EPOC refers to the elevated oxygen consumption that continues after exercise ends as the body returns to its resting state.
Which muscle fiber type is most recruited during a low-intensity, long-duration group fitness class?
Answer: Type I slow-twitch
Type I (slow-twitch) muscle fibers are highly fatigue-resistant and are preferentially recruited during prolonged, low-intensity aerobic activity.
What is the Karvonen formula used to calculate in exercise programming?
Answer: Target heart rate reserve
The Karvonen formula uses heart rate reserve (HRmax minus resting HR) to calculate a personalized target heart rate range for training.
Which response best describes cardiac output during moderate aerobic group exercise?
Answer: It increases via rises in heart rate and stroke volume
Cardiac output (heart rate × stroke volume) increases during aerobic exercise primarily through elevated heart rate and, to a lesser extent, increased stroke volume.