HMS, BM EQ-Bank 163

Explain how the intensity of exercise influences the predominant energy system used. (3 marks)

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Sample Answer

High intensity activities (80-100% effort) predominantly use ATP-PCr system for immediate energy in first 10 seconds
Moderate-high intensity activities (60-80% effort) utilise glycolytic system for activities lasting 10 seconds to 2 minutes
Lower intensity activities (below 60% effort) rely on aerobic system which can sustain activity for extended periods

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Sample Answer

High intensity activities (80-100% effort) predominantly use ATP-PCr system for immediate energy in first 10 seconds
Moderate-high intensity activities (60-80% effort) utilise glycolytic system for activities lasting 10 seconds to 2 minutes
Lower intensity activities (below 60% effort) rely on aerobic system which can sustain activity for extended periods