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Throwing a genetic switch helps mice grow more of a mysterious muscle fiber that lets them run farther and longer than normal mice, a paper in the January issue of the journal Cell Metabolism reports.
A team at Harvard Medical School was able to increase the activity of a gene called PGC-1 beta in the mice.
The gene increases the growth of a little-understood muscle fiber called IIX, which is very efficient and very quick.
Usually a muscle fiber is one or the other.
The more IIX fibers in a muscle, the longer and harder it can work.
The supermice were able to run on a treadmill for 25 percent longer than normal mice. And the mice were stronger than the normal mice. The researchers are afraid that the new drugs produced from this finding will be abused by sportsmen
A team at Harvard Medical School was able to increase the activity of a gene called PGC-1 beta in the mice.
The gene increases the growth of a little-understood muscle fiber called IIX, which is very efficient and very quick.
Usually a muscle fiber is one or the other.
The more IIX fibers in a muscle, the longer and harder it can work.
The supermice were able to run on a treadmill for 25 percent longer than normal mice. And the mice were stronger than the normal mice. The researchers are afraid that the new drugs produced from this finding will be abused by sportsmen
