Compare the ventilation rate response during a 100 m sprint with that of a 5 km run. (4 marks)
--- 8 WORK AREA LINES (style=lined) ---
Show Answers Only
Sample Answer
- 100 m sprint causes a sharp, rapid increase in ventilation rate due to the high-intensity anaerobic nature of the activity, reaching up to 40-50 breaths per minute.
- In contrast, the 5 km run produces a more gradual but sustained increase in ventilation rate, typically stabilising around 30-40 breaths per minute once steady state is achieved.
- The sprint creates an oxygen debt with ventilation rate remaining elevated post-exercise to repay this debt.
- The 5 km run maintains a more consistent ventilation rate throughout with a more gradual recovery.
- The sprint primarily uses the anaerobic energy system.
- The 5 km run relies more on the aerobic system, affecting the timing and magnitude of ventilation rate changes.
Show Worked Solution
Sample Answer
- 100 m sprint causes a sharp, rapid increase in ventilation rate due to the high-intensity anaerobic nature of the activity, reaching up to 40-50 breaths per minute.
- In contrast, the 5 km run produces a more gradual but sustained increase in ventilation rate, typically stabilising around 30-40 breaths per minute once steady state is achieved.
- The sprint creates an oxygen debt with ventilation rate remaining elevated post-exercise to repay this debt.
- The 5 km run maintains a more consistent ventilation rate throughout with a more gradual recovery.
- The sprint primarily uses the anaerobic energy system.
- The 5 km run relies more on the aerobic system, affecting the timing and magnitude of ventilation rate changes.