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Lactic acid that builds up in the muscle cells

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13y ago

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More answers

this is cauased by the depletion of calcium

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12y ago
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The buildup of lactic acid causes muscle fatigue.

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12y ago
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by the excesss amount of lactic acid that build up in muscles. Another cause of body is the inability for the body to provide the amount of energy needed for the muscle's increased demand.

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14y ago
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lactic acid

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Wiki User

14y ago
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lactic acid

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Wiki User

15y ago
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Q: What substance causes muscle fatigue?
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