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Dexter plays basketball - Edexcel - GCSE Physical Education - Question 11 - 2020 - Paper 1
Question 11
Dexter plays basketball. A basketball game is played at different intensities. Dexter’s body uses different muscle fibre types as the intensity of the play increase... show full transcript
Worked Solution & Example Answer:Dexter plays basketball - Edexcel - GCSE Physical Education - Question 11 - 2020 - Paper 1
Step 1
Evaluate the importance of three different muscle fibre types during the different intensities of play in Figure 6.
Answer
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Type I Muscle Fibres (Slow-Twitch):
- These fibres are crucial for endurance activities such as jogging back to position. They resist fatigue and allow Dexter to maintain performance over longer periods. They are well-suited for activities that require a sustained energy output, making them important in the context of basketball when players are moving continuously.
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Type IIa Muscle Fibres (Fast-Twitch, Oxidative):
- These fibres are important during activities that require a mix of power and endurance, such as jumping to reach the ball at the start of the game. They provide greater strength and speed than Type I fibres while still having a level of endurance, helping Dexter perform well during explosive movements that are also sustained over time.
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Type IIb Muscle Fibres (Fast-Twitch, Glycolytic):
- These fibres are essential for short bursts of energy, such as sprinting to the basket. They allow for rapid and powerful movements but fatigue quickly. This makes them vital in high-intensity situations where Dexter needs to exert maximal effort in a short timeframe, such as when making a fast break or executing a slam dunk.