PHYSIOLOGY
MUSCLE ENERGETICS ATP AND CP
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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100-metre sprint
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long jump
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50-metre swim
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discus throw
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Detailed explanation-1: -Carbohydrates (glucose/glycogen) serve as the primary source of fuel as duration and intensity increase. If exercise continues for a significant period of time, fatty acids will serve as the fuel source when glycogen stores are nearly depleted.
Detailed explanation-2: -The first 10 to 20 seconds of high-intensity physical activity is fueled by the “ATP-CP, ‘’ also known as the phosphagen energy system. Once the available ATP is used up, which occurs in a few seconds, a molecule called phosphocreatine is used to re-form ATP in the muscle.
Detailed explanation-3: -The ATP-PC system is responsible for providing energy to the highest threshold muscle fibres that are capable of producing the greatest levels of force. It makes sense that bigger stronger muscles generate more power due to their storage capacity for phosphocreatine.