Exercise Science Flashcards

7 cards from real BSI 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 Science flashcards as text

Which energy system primarily fuels an all-out 25-yard sprint lasting about 10 seconds?
Answer: Phosphagen (ATP-PC) system
The ATP-PC system supplies immediate energy for maximal efforts lasting roughly 0-10 seconds.
A swimmer completes a continuous 30-minute steady swim. Which energy system contributes most?
Answer: Aerobic (oxidative) system
Long, moderate-intensity efforts rely mainly on oxygen-dependent aerobic metabolism.
Which muscle is the primary contributor to the pull phase of the front crawl?
Answer: Latissimus dorsi
The latissimus dorsi powerfully extends and adducts the shoulder during the pull.
Which principle of training states that the body adapts specifically to the type of demand placed on it?
Answer: Specificity
Specificity (SAID principle) means adaptations match the training stimulus.
A student stops swimming for two months and loses endurance. Which training principle explains this?
Answer: Reversibility
Reversibility means fitness gains are lost when training stops.
Which joint action occurs at the knee during the downbeat of the flutter kick?
Answer: Extension
The knee straightens (extends) as the leg drives downward in the flutter kick.
Why is heart rate typically lower when swimming than when running at a similar effort?
Answer: Horizontal position and water pressure aid venous return
The horizontal body position and hydrostatic pressure improve blood return to the heart, lowering heart rate.