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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 (Type II) fibres. These fibres are designed for explosive movements, providing the necessary force and power required for quick, high-intensity actions such as a basketball shot. Fast twitch fibres contract powerfully and quickly, making them particularly suitable for activities that require short bursts of strength and speed.
Step 2
Describe what happens to blood flow during vascular shunting.
Answer
During vascular shunting, blood flow is redirected towards the active muscles and away from inactive areas of the body. This occurs through vasodilation, wherein the internal diameter of the blood vessels widens to increase blood flow to the working muscles. Conversely, blood vessels supplying inactive areas constrict, reducing blood flow there. As a result, more oxygen and nutrients are delivered to the muscles that are active, enhancing performance and efficiency during the game.
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 active muscles receive adequate oxygen. This is crucial because the muscles require oxygen to continue working aerobically, helping to delay fatigue. By prioritizing blood flow to working muscles, players can maintain a higher level of performance throughout the game.