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Question

The main cause for muscle fatigue

A
Acetic acid
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B
Water
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C
Lactic acid
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D
Hydro chloric acid
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Solution

The correct option is C Lactic acid
Intracellular acidosis due mainly to lactic acid accumulation has been regarded as the most important cause of skeletal muscle fatigue. Inorganic phosphate, which increases during fatigue due to the breakdown of creatine phosphate appears to be a major cause of muscle fatigue.
So, the correct option is 'Lactic acid'.

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