Background Instrument-assisted soft tissue mobilization (IASTM) and percussion massagers are myofascial release techniques that have shown acute and residual effects for improving lower extremity ROM.

The hamstring muscles are responsible for your hip and knee movements in walking, squatting, bending your knees, and tilting your pelvis. Hamstring muscle injuries are the most common sports injury.

Unfortunately, hamstring strains are both common and painful. They strike athletes of all sorts – including runners, skaters, and football, soccer, and basketball players. But what is a hamstring? It ...