http://harvardscience.harvard.edu/stories/person/1446 Stories and external links referencing a person (RSS) en http://harvardscience.harvard.edu/medicine-health/articles/scientists-discover-chemical-switch-determines-muscle-fiber-type <!--paging_filter--><p>Published in the Aug. 15, 2002 issue of the journal Nature, findings from a multi-institutional team describe the pivotal role of a molecule called PGC-1 in transforming “fast twitch” fibers (Type II) to "slow twitch" fibers (Type I). "Fast twitch" fibers create the bulkier, strong but quickly fatigued muscles of weightlifters or sprinters. Most muscles contain a combination of the two fibers. While researchers caution they're not promising a new athletic stamina-enhancing drug, they say it's certainly possible that this might benefit people who are deficient in muscle fibers because of medical conditions.</p> <p><a href="http://harvardscience.harvard.edu/medicine-health/articles/scientists-discover-chemical-switch-determines-muscle-fiber-type">read more</a></p> Mon, 26 Mar 2007 05:24:54 -0400 70652986 3259 at http://harvardscience.harvard.edu