Tag: Jiandie Lin

  • Health

    Scientists discover chemical switch that determines muscle fiber type

    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…

    1–2 minutes