Researchers have identified a molecule released by working muscle that appears to be required for muscle to adapt to exercise, a finding they hope could eventually help people who cannot exercise enough to get the benefit.
The molecule is L-beta-aminoisobutyric acid, or L-BAIBA. In experiments led by the University of Leeds and published in Nature Communications, it was found to be a central regulator of how muscle remodels, strengthens, and builds endurance in response to training.
