WRESTLING-LACTIC ACID

RPT378 at MAINE.MAINE.EDU RPT378 at MAINE.MAINE.EDU
Thu Apr 2 15:07:40 EST 1992


I assume you are asking why lactic acid builds up in the muscles during
strenuous exercise?  Well, when oxygen transport to the muscles is not
 fast enough to keep up with demand, glucose use greatly increases to
generate more ATP from the less efficient glycolytic process.  When all
that NADH is produced from glycolytic fission of glucose, and the cytochromes a
re not taking up the NADH because oxygen is depleted, another enzyme, lactate d
ehydrogenase reduces pyruvate (from the splitting of glucose) to lactic acid (v
iola!).  When oxygen returns, the lactate is reoxidized.  This is part of the "
Pastuer effect".  Hope this helps.
L. Zibilske
Assoc. Prof. Soil Microbiology
University of Maine



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