Assess the interplay of energy systems during a 90-minute soccer match. (6 marks)
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Sample Answer
- Throughout a soccer match, the ATP-PCr system provides immediate energy for explosive movements like sprinting to beat defenders, jumping for headers and rapid direction changes that occur approximately every 90 seconds.
- The lactic acid system becomes crucial during sequences of repeated high-intensity efforts such as overlapping runs or pressing sequences that extend beyond 10 seconds.
- During periods of lower intensity activity like tactical repositioning or walking, the aerobic system dominates, providing over 80% of energy requirements across the full 90 minutes.
- Natural breaks in play such as throw-ins or free kicks allow partial replenishment of ATP-PCr stores, enabling players to repeatedly perform explosive movements throughout the match.
- As the game progresses into the later stages, accumulated lactic acid can impair muscle function leading to reduced power output and compromised skill execution.
- A player’s aerobic fitness level ultimately determines their ability to maintain high-intensity intermittent performance while delaying the onset of fatigue across the full match duration.
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Sample Answer
- Throughout a soccer match, the ATP-PCr system provides immediate energy for explosive movements like sprinting to beat defenders, jumping for headers and rapid direction changes that occur approximately every 90 seconds.
- The lactic acid system becomes crucial during sequences of repeated high-intensity efforts such as overlapping runs or pressing sequences that extend beyond 10 seconds.
- During periods of lower intensity activity like tactical repositioning or walking, the aerobic system dominates, providing over 80% of energy requirements across the full 90 minutes.
- Natural breaks in play such as throw-ins or free kicks allow partial replenishment of ATP-PCr stores, enabling players to repeatedly perform explosive movements throughout the match.
- As the game progresses into the later stages, accumulated lactic acid can impair muscle function leading to reduced power output and compromised skill execution.
- A player’s aerobic fitness level ultimately determines their ability to maintain high-intensity intermittent performance while delaying the onset of fatigue across the full match duration.