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Figure 4 shows a basketball player jumping to shoot at the basket - Edexcel - GCSE Physical Education - Question 3 - 2019 - Paper 1
Question 3
Figure 4 shows a basketball player jumping to shoot at the basket. (a) Explain the main muscle fibre type that is used to jump high when taking the basketball shot.... show full transcript
Worked Solution & Example Answer:Figure 4 shows a basketball player jumping to shoot at the basket - Edexcel - GCSE Physical Education - Question 3 - 2019 - Paper 1
Step 1
Explain the main muscle fibre type that is used to jump high when taking the basketball shot.
Answer
The main muscle fibre type used for jumping high in basketball is fast twitch muscle fibres. These fibres are essential for explosive movements that require power and speed. Fast twitch fibres can contract quickly and forcefully, which is crucial for the intense action of jumping. This type of fibre is well suited for high-intensity activities because they are capable of generating maximal strength and power output in short bursts.
Step 2
Describe what happens to blood flow during vascular shunting.
Answer
During vascular shunting in a game of basketball, blood flow is redirected towards the active muscles and away from less active areas. This is achieved through vasodilation of the blood vessels supplying the working muscles, which increases the diameter and thus the flow of blood to these areas. Conversely, blood flow to inactive muscles and organs is reduced through vasoconstriction, which narrows the diameter of their blood vessels. This process ensures that the working muscles receive the necessary oxygen and nutrients while minimizing flow to areas that do not require as much blood.
Step 3
Explain one reason why vascular shunting is necessary during a game of basketball.
Answer
Vascular shunting is necessary during a game of basketball to ensure that the muscles receive an adequate supply of oxygen and nutrients. As the player engages in high-intensity exercises, the demand for oxygen increases to sustain aerobic respiration. This helps in delaying fatigue, allowing players to maintain their performance levels for longer periods. Additionally, it facilitates the removal of metabolic waste products such as carbon dioxide, further supporting optimal muscle function.