CrossFit Energy Systems and Metabolic Conditioning Flashcards
6 cards from real CROSSFIT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CrossFit Energy Systems and Metabolic Conditioning flashcards as text
Which energy system provides the primary fuel source during a maximal-effort sprint lasting 10 seconds or less?
Answer: Phosphagen (ATP-PC)
The phosphagen system uses stored ATP and creatine phosphate to fuel very short, maximal efforts up to about 10 seconds.
During a 400-meter run at near-maximal pace, which energy system is predominantly active?
Answer: Glycolytic
The glycolytic system dominates efforts lasting roughly 30 seconds to 2 minutes, such as a fast 400-meter run.
Which energy system is the primary contributor during a 20-minute moderate-intensity row?
Answer: Oxidative
The oxidative (aerobic) system is dominant for sustained efforts lasting more than about 2–3 minutes.
CrossFit's broad time and modal domains are designed to develop fitness across all three metabolic pathways. Which statement best describes this approach?
Answer: Use varied workouts that stimulate phosphagen, glycolytic, and oxidative systems
CrossFit intentionally varies workout duration and intensity so all three energy systems are regularly trained.
What physiological adaptation most directly improves an athlete's capacity in the oxidative energy system?
Answer: Greater mitochondrial density
Greater mitochondrial density allows more oxidative phosphorylation, directly improving aerobic capacity.
Which CrossFit workout modality best exemplifies training the glycolytic energy system?
Answer: 5 rounds of max-effort 30-second Assault Bike sprints with 3-minute rest
Repeated 30-second near-maximal bursts stress the glycolytic pathway, which powers efforts in the 30-second to 2-minute range.