Q. I am a 45-year-old competitive racquetball player who has had six months of right shoulder pain. The pain is worst on overhead motions while playing. The discomfort also wakes me at night. An MRI ...

Muscle-on-chip systems are three-dimensional human muscle cell bundles cultured on collagen scaffolds. A Stanford University research team sent some of these systems to the International Space Station ...

Aging muscles heal more slowly after injury—a frustrating reality familiar to many older adults. A UCLA study conducted in mice reveals an unexpected cause: Stem cells in aged muscle accumulate higher ...

Key takeaways UCLA researchers studying mice discovered that stem cells in aged muscle accumulate a protective protein called NDRG1 that slows their ability to repair tissue but helps the cells ...

The population across developed countries is getting older and the associated frailty and debilitation are becoming major health problems. This gradual muscle loss is accelerated by the poor capacity ...