Practice Test GeeksCertified Strength and Conditioning Specialist Practice Test
← All CSCS Flashcard Decks

CSCS: Bioenergetics of Exercise & Training Flashcards

7 cards from real CSCS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 CSCS: Bioenergetics of Exercise & Training flashcards as text

  1. Which of the following training adaptations most directly increases the lactate threshold as a percentage of VO2max?

    Answer: Greater mitochondrial density and oxidative enzyme activity in slow-twitch fibers

    Greater mitochondrial density and oxidative capacity allow muscle to clear lactate more efficiently and rely less on glycolysis at a given intensity.

  2. Approximately how many ATP molecules are produced per mole of palmitate (a 16-carbon fatty acid) during complete beta-oxidation and Krebs cycle oxidation?

    Answer: 129

    Complete oxidation of palmitate yields approximately 129 ATP through combined beta-oxidation, Krebs cycle, and oxidative phosphorylation.

  3. What is the primary regulatory role of AMP in skeletal muscle bioenergetics?

    Answer: AMP stimulates phosphofructokinase and AMP kinase, signaling low energy status

    Rising AMP signals energy deficit, activating PFK (glycolysis) and AMPK (promoting fat oxidation and mitochondrial biogenesis) to restore ATP.

  4. Which energy system is MOST responsible for ATP production during a 400-meter race run at maximal effort (~45–60 seconds)?

    Answer: Glycolytic system predominantly, with phosphagen contribution early

    The 400m race relies primarily on anaerobic glycolysis for most of its duration, with the phosphagen system dominant in the first seconds and some aerobic contribution.

  5. Ketone bodies (acetoacetate and beta-hydroxybutyrate) become a significant fuel source primarily during:

    Answer: Prolonged low-carbohydrate states such as fasting or very-low-carb diets

    Ketone bodies are produced by the liver from fatty acids during prolonged carbohydrate restriction or fasting and serve as an alternative fuel for brain and muscle.

  6. Which statement best describes excess post-exercise oxygen consumption (EPOC)?

    Answer: EPOC represents elevated oxygen consumption after exercise used to restore physiological homeostasis

    EPOC reflects elevated VO2 after exercise used for PCr resynthesis, lactate clearance, elevated temperature/hormones, and other recovery processes.

  7. A runner competing in a 10 km race primarily uses which combination of energy systems?

    Answer: Oxidative system predominantly with glycolytic contributions at higher intensities

    A 10 km race lasting ~28–45 minutes is primarily aerobic (oxidative), though anaerobic glycolysis contributes during surges and the finishing sprint.