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glaiza
glaiza asked in Science & MathematicsBiology · 1 decade ago

how does lactic acid contributes to muscle fatigue?

3 Answers

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  • Jay M
    Lv 5
    1 decade ago
    Favorite Answer

    Lactic acid produced by fermentation of glucose by the muscle cell lowers the pH inside the cell. Contraction of muscle filaments doesn't work as well at acid pH. The muscle fails to fully contract even though stimulated. This is probably an evolutionary adaptation to prevent you from irreversibly damaging the muscle cell by overuse.

    Source(s): Martini, Anatomy and Physiology, Prentice Hall.
  • HughesyNo.1 Answerer
    1 decade ago

    A build up of lactic acid in the muscles leads to cramp.

  • R B
    1 decade ago

    the lactic acid produced during exercise might lead to muscle cramp.

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