Explain how different types of training lead to specific adaptations in slow twitch and fast twitch muscle fibres that improve athletic performance. (4 marks)
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- Aerobic training targets slow twitch fibres by providing sustained, moderate-intensity exercise stimulus.
- This training causes increased mitochondrial number and size, enhancing the muscle’s oxygen utilisation capacity.
- Enhanced capillary density develops around slow twitch fibres, improving oxygen and nutrient delivery during endurance activities.
- Anaerobic training stimulates fast twitch fibres through high-intensity, explosive exercise demands.
- This results in muscle hypertrophy and enhanced glycolytic enzyme activity for rapid energy production.
- Therefore specific training adaptations optimise each fibre type’s contribution to different athletic performance requirements.
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- Aerobic training targets slow twitch fibres by providing sustained, moderate-intensity exercise stimulus.
- This training causes increased mitochondrial number and size, enhancing the muscle’s oxygen utilisation capacity.
- Enhanced capillary density develops around slow twitch fibres, improving oxygen and nutrient delivery during endurance activities.
- Anaerobic training stimulates fast twitch fibres through high-intensity, explosive exercise demands.
- This results in muscle hypertrophy and enhanced glycolytic enzyme activity for rapid energy production.
- Therefore specific training adaptations optimise each fibre type’s contribution to different athletic performance requirements.