Evaluate how fatigue affects the nervous system's ability to maintain skilled performance in endurance events. (8 marks)
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Sample Answer
Central fatigue effects:
- Reduced neural drive to muscles
- Decreased motor unit recruitment
- Impaired neurotransmitter function
- Reduced movement precision and coordination
Peripheral fatigue effects:
- Altered neuromuscular junction function
- Slower nerve conduction velocity
- Reduced sensitivity of muscle receptors
- Delayed reflex responses
Impact on performance:
- Deterioration in technique and skill execution
- Increased reaction times
- Reduced movement accuracy
- Impaired balance and coordination
Compensatory mechanisms:
- Increased conscious attention to movement
- Modified movement patterns to maintain performance
- Enhanced reliance on visual feedback
- Adjusted pacing strategies
Show Worked Solution
Sample Answer
Central fatigue effects:
- Reduced neural drive to muscles
- Decreased motor unit recruitment
- Impaired neurotransmitter function
- Reduced movement precision and coordination
Peripheral fatigue effects:
- Altered neuromuscular junction function
- Slower nerve conduction velocity
- Reduced sensitivity of muscle receptors
- Delayed reflex responses
Impact on performance:
- Deterioration in technique and skill execution
- Increased reaction times
- Reduced movement accuracy
- Impaired balance and coordination
Compensatory mechanisms:
- Increased conscious attention to movement
- Modified movement patterns to maintain performance
- Enhanced reliance on visual feedback
- Adjusted pacing strategies