Exercise Physiology & Sports Performance Testing Flashcards
7 cards from real CCSP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Exercise Physiology & Sports Performance Testing flashcards as text
The phosphocreatine (ATP-PC) energy system is the primary fuel source for activities lasting approximately how long?
Answer: 0–10 seconds
The ATP-PC system provides immediate, high-intensity energy but is depleted within approximately 10 seconds of maximal effort.
VO2 max is defined as which of the following?
Answer: The maximum rate of oxygen consumption during maximal incremental exercise
VO2 max is the highest rate at which the body can consume oxygen during maximal aerobic exercise, reflecting overall cardiorespiratory fitness.
The glycolytic (anaerobic) energy system is the primary energy source for activities lasting approximately:
Answer: 10 seconds to 2 minutes
The glycolytic system predominates during activities lasting approximately 10 seconds to 2 minutes, bridging the phosphagen and oxidative systems.
During intense exercise approaching VO2 max, which fuel substrate provides the greatest contribution to muscle energy?
Answer: Muscle glycogen via anaerobic glycolysis
At exercise intensities near VO2 max, muscle glycogen is the predominant fuel because it can be rapidly broken down anaerobically via glycolysis.
The Fick equation expresses VO2 as:
Answer: Cardiac output multiplied by the arteriovenous oxygen difference
The Fick equation states VO2 = Cardiac Output × a-vO2 difference, linking oxygen delivery via cardiac output to oxygen extraction by peripheral tissues.
Compared to Type I (slow-twitch) muscle fibers, Type II (fast-twitch) fibers are best characterized by:
Answer: Greater peak force production but faster fatigability
Type II fibers produce greater force and speed but fatigue faster due to reliance on anaerobic glycolysis and lower mitochondrial density compared to Type I fibers.
The lactate threshold is best defined as the exercise intensity at which:
Answer: Blood lactate begins to accumulate faster than it can be cleared
The lactate threshold marks the inflection point where lactate production by muscle exceeds the clearance capacity of the body, signaling a shift toward predominantly anaerobic metabolism.