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Small molecules can have big effects on endurance

Adaptation of muscle to endurance exercise training involves the coordinated expression of genes involved in oxidative metabolism, resulting in increased endurance. A recent study shows that small-molecule activators of two pathways thought to transduce these effects can enhance the effects of training, or even substitute for it.

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Figure 1: Mechanism for increasing muscle endurance via the small molecules AICAR and GW1516.

Katie Ris-Vicari

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Baar, K., Hardie, D. Small molecules can have big effects on endurance. Nat Chem Biol 4, 583–584 (2008). https://doi.org/10.1038/nchembio1008-583

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