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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. Which assessment is used to estimate cardiorespiratory fitness without maximal exertion and is based on heart rate response?

    Answer: YMCA Submaximal Cycle Ergometer Test

    The YMCA Submaximal Cycle Ergometer Test estimates VO2max by extrapolating the linear heart rate-workload relationship to predicted maximal heart rate.

  2. What is the primary fuel source during low-intensity, prolonged exercise (e.g., 30–50% VO2max)?

    Answer: Free fatty acids

    At low intensities, the aerobic system relies predominantly on free fatty acid oxidation, sparing glycogen for higher-intensity demands.

  3. What is the Frank-Starling mechanism and its significance in exercise physiology?

    Answer: Increased venous return stretches the ventricle, increasing stroke volume

    The Frank-Starling mechanism describes how increased venous return during exercise stretches ventricular walls, enhancing contractility and stroke volume.

  4. Which type of stretching is most recommended for improving flexibility and is generally considered the safest for most populations?

    Answer: Static stretching

    Static stretching, involving holding a position for 15–60 seconds, is widely recommended for improving flexibility with a low injury risk profile.

  5. During high-intensity interval training (HIIT), which metabolic byproduct is primarily responsible for the burning sensation in muscles?

    Answer: Lactic acid accumulation and hydrogen ion production

    The burning sensation during intense exercise is caused by hydrogen ion accumulation (from lactate production), which decreases muscle pH and impairs contraction.

  6. What is the recommended minimum number of days per week of moderate-intensity aerobic exercise for substantial health benefits according to ACSM guidelines?

    Answer: 5 days/week

    ACSM recommends ≥5 days/week of moderate-intensity aerobic activity, or ≥3 days/week of vigorous-intensity activity, for substantial health benefits.

  7. Which variable is calculated by multiplying heart rate by stroke volume?

    Answer: Cardiac output

    Cardiac output (Q) = heart rate (HR) × stroke volume (SV), representing the total volume of blood ejected by the heart per minute.