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Exercise Science Flashcards

7 cards from real ACSM 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

  1. What is the primary limiting factor for VO2max in highly trained endurance athletes?

    Answer: Maximal cardiac output

    In elite endurance athletes, maximal cardiac output (heart rate × stroke volume) is the primary central limiting factor for VO2max.

  2. During resistance training, which principle states that muscles must be progressively loaded beyond habitual levels to stimulate adaptation?

    Answer: Overload principle

    The overload principle states that training stimuli must exceed the current capacity of the body to drive physiological adaptations.

  3. At what blood lactate concentration is the lactate threshold (LT1) typically defined?

    Answer: 2 mmol/L

    The first lactate threshold (LT1) is commonly identified at approximately 2 mmol/L, representing the onset of blood lactate accumulation above baseline.

  4. Which neuromuscular mechanism explains the initial strength gains in untrained individuals during the first weeks of resistance training?

    Answer: Neural adaptations and motor unit recruitment

    Early strength gains in novice trainees are primarily attributed to neural adaptations including improved motor unit recruitment, firing rate, and synchronization.

  5. What is the approximate MET value for moderate-intensity walking at 3.5 mph on a level surface?

    Answer: 3.5 METs

    Walking at 3.5 mph on a level surface is approximately 3.5 METs, classified as moderate-intensity activity (3–5.9 METs).

  6. Which substrate provides the fastest rate of ATP resynthesis during maximal intensity exercise?

    Answer: Phosphocreatine (PCr)

    Phosphocreatine provides the fastest rate of ATP resynthesis via creatine kinase, fueling the first 5–10 seconds of maximal exercise.

  7. What effect does eccentric muscle action have on delayed onset muscle soreness (DOMS) compared to concentric actions?

    Answer: Eccentric actions produce greater DOMS

    Eccentric contractions generate greater mechanical stress and microtrauma to muscle fibers, resulting in significantly more DOMS than concentric contractions.