NCEA L1 Physical Ed Practice Questions - NCEA Level 1 Physical Education - New Zealand Exam

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What is the main physiological change occurs at the anaerobic threshold (lactate threshold) during progressive intensity exercise?

The body completely stops using oxygen for muscle contraction Lactic acid production exceeds the body's rate of clearance Phosphocreatine stores suddenly increase by 50 percent Heart rate decreases to conserve oxygen

Correct Answer:

Lactic acid production exceeds the body's rate of clearance

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