Compare the immediate cardiac output response during high-intensity interval training with steady-state aerobic training. (5 marks)
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Sample Answer
Similarities:
- Both training methods increase cardiac output above resting levels.
- Both responses result from increases in heart rate and stroke volume.
- Both deliver increased oxygen to working muscles.
- Both achieve significantly elevated cardiac output in trained individuals.
Differences:
- Steady-state aerobic training produces gradual cardiac output increases. These stabilise at sustainable levels throughout exercise.
- HIIT causes rapid cardiac output spikes during work intervals. Partial recovery occurs between intervals.
- Steady-state maintains consistent cardiac output throughout exercise duration. This allows efficient oxygen delivery.
- HIIT creates fluctuating cardiac output between work and recovery periods. Peak demands exceed steady-state levels.
- Steady-state allows the cardiovascular system to reach equilibrium. HIIT repeatedly stresses the system without achieving steady state.
- HIIT produces greater cardiovascular variability and higher peak demands than steady-state training.
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Sample Answer
Similarities:
- Both training methods increase cardiac output above resting levels.
- Both responses result from increases in heart rate and stroke volume.
- Both deliver increased oxygen to working muscles.
- Both achieve significantly elevated cardiac output in trained individuals.
Differences:
- Steady-state aerobic training produces gradual cardiac output increases. These stabilise at sustainable levels throughout exercise.
- HIIT causes rapid cardiac output spikes during work intervals. Partial recovery occurs between intervals.
- Steady-state maintains consistent cardiac output throughout exercise duration. This allows efficient oxygen delivery.
- HIIT creates fluctuating cardiac output between work and recovery periods. Peak demands exceed steady-state levels.
- Steady-state allows the cardiovascular system to reach equilibrium. HIIT repeatedly stresses the system without achieving steady state.
- HIIT produces greater cardiovascular variability and higher peak demands than steady-state training.