Changes in Passive Properties of the Gastrocnemius Muscle–Tendon Unit During a 4-Week Routine Static-Stretching Program

Abstract

Based on these results, the SS program effectively increased DF ROM and decreased muscle stiffness. Furthermore, an SS program of more than 2 wk duration effectively increased DF ROM and changed the stretch tolerance, and an SS program more than 3 wk in duration effectively decreased muscle stiffness.