Practice Test Geeks(ACE) AccessData Certified Examiner Practice Test
← All ACE Flashcard Decks

Exercise Physiology Flashcards

7 cards from real ACE 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 Physiology flashcards as text

  1. Which of the following is the PRIMARY determinant of cardiac output?

    Answer: Heart rate × stroke volume

    Cardiac output (Q) is calculated as heart rate multiplied by stroke volume, representing the total volume of blood pumped by the heart per minute.

  2. During aerobic exercise, which muscle fiber type is recruited FIRST?

    Answer: Type I (slow-twitch oxidative)

    According to the size principle, the nervous system recruits smaller, low-threshold Type I (slow-twitch) motor units first before engaging faster, higher-threshold fibers.

  3. What is the Fick equation used to calculate?

    Answer: Oxygen consumption (VO2)

    The Fick equation calculates VO2 as cardiac output multiplied by the arteriovenous oxygen difference (a-vO2 diff), linking delivery and extraction of oxygen.

  4. Which of the following adaptations is a hallmark of long-term endurance training?

    Answer: Increased mitochondrial density in skeletal muscle

    Endurance training stimulates mitochondrial biogenesis, increasing mitochondrial density and oxidative enzyme activity in trained muscles, improving aerobic capacity.

  5. The respiratory exchange ratio (RER) of 1.0 during steady-state exercise indicates that the body is primarily using which fuel?

    Answer: Carbohydrate

    An RER of 1.0 means the CO2 produced equals the O2 consumed, which is the ratio for complete carbohydrate (glucose) oxidation.

  6. What happens to systolic blood pressure during a progressive aerobic exercise test?

    Answer: It increases progressively with increasing workload

    Systolic blood pressure rises linearly with increasing exercise intensity due to greater cardiac output, while diastolic pressure typically remains stable or decreases slightly.

  7. Which of the following describes the oxygen dissociation curve shift during intense exercise?

    Answer: Shift to the right, increasing oxygen release to tissues

    Increased CO2, decreased pH (acidosis), and elevated temperature during intense exercise cause a rightward Bohr shift, reducing hemoglobin's affinity for O2 and promoting O2 delivery to muscles.