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Finding May Solve Riddle of Fatigue in Muscles

record updated
item type
article on a website
author
Gina Kolata
link
https://www.nytimes.com/2008/02/12/health/research/12musc.html
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journal
Nytimes.com
year
2008
month
Feb 12

excerpt

One of the great unanswered questions in physiology is why muscles get tired. The experience is universal, common to creatures that have muscles, but the answer has been elusive until now.

Scientists at Columbia say they have not only come up with an answer, but have also devised, for mice, an experimental drug that can revive the animals and let them keep running long after they would normally flop down in exhaustion.

For decades, muscle fatigue had been largely ignored or misunderstood. Leading physiology textbooks did not even try to offer a mechanism, said Dr. Andrew Marks, principal investigator of the new study. A popular theory, that muscles become tired because they release lactic acid, was discredited not long ago.

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