Compare how aerobic training adaptations in slow twitch muscle fibres differ from strength training adaptations in fast twitch muscle fibres. (5 marks)
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Similarities
- Both fibre types undergo progressive overload adaptations when consistently challenged through appropriate training stimuli.
- Each fibre type experiences increased protein synthesis and enhanced metabolic enzyme activity specific to their energy requirements.
- Both demonstrate improved muscle contraction effectiveness and enhanced neuromuscular coordination following systematic training programs.
Differences
- Aerobic training in slow twitch fibres develops increased mitochondrial number and size for enhanced oxygen utilisation.
- These adaptations improve capillary density around muscle fibres and increase myoglobin content for better oxygen storage.
- Slow twitch fibres enhance oxidative enzyme activity to support sustained aerobic energy production during endurance activities.
- Strength training in fast twitch fibres creates muscle hypertrophy through increased actin and myosin filament development.
- Fast twitch adaptations include enhanced glycolytic enzyme activity for rapid anaerobic energy production during explosive movements.
- These fibres develop greater cross-sectional area and improved neural recruitment patterns for maximum force generation.
- Therefore each fibre type adapts specifically to match the training demands and energy system requirements of different activities.
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Similarities
- Both fibre types undergo progressive overload adaptations when consistently challenged through appropriate training stimuli.
- Each fibre type experiences increased protein synthesis and enhanced metabolic enzyme activity specific to their energy requirements.
- Both demonstrate improved muscle contraction effectiveness and enhanced neuromuscular coordination following systematic training programs.
Differences
- Aerobic training in slow twitch fibres develops increased mitochondrial number and size for enhanced oxygen utilisation.
- These adaptations improve capillary density around muscle fibres and increase myoglobin content for better oxygen storage.
- Slow twitch fibres enhance oxidative enzyme activity to support sustained aerobic energy production during endurance activities.
- Strength training in fast twitch fibres creates muscle hypertrophy through increased actin and myosin filament development.
- Fast twitch adaptations include enhanced glycolytic enzyme activity for rapid anaerobic energy production during explosive movements.
- These fibres develop greater cross-sectional area and improved neural recruitment patterns for maximum force generation.
- Therefore each fibre type adapts specifically to match the training demands and energy system requirements of different activities.