An athlete ran in the 100-metre final at an Olympic Games - HSC - SSCE Personal Development and Physical Education - Question 23 - 2020 - Paper 1
Question 23
An athlete ran in the 100-metre final at an Olympic Games.
In the table below, identify the predominant energy system used by the athlete, and the features of that ... show full transcript
Worked Solution & Example Answer:An athlete ran in the 100-metre final at an Olympic Games - HSC - SSCE Personal Development and Physical Education - Question 23 - 2020 - Paper 1
Step 1
Predominant energy system used by this athlete
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Answer
The predominant energy system used by this athlete is the ATP-PC system, also known as the Alactic system.
Step 2
Source of fuel
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Answer
The primary source of fuel for the ATP-PC system is creatine phosphate (CP).
Step 3
Energy system duration
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The energy system duration for this type of activity is approximately 6–12 seconds.
Step 4
Cause of fatigue
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Answer
The cause of fatigue during a 100-metre sprint is primarily the depletion of creatine phosphate stores in the muscles.
Step 5
Rate of recovery
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Answer
The rate of recovery for the ATP-PC system is about 2 minutes for complete restoration of ATP and creatine phosphate levels.
