Figure 4.

Force and length responses when an interval is provided between active stretch and active shortening. Black line indicates the pure shortening condition (isometric-active shortening). Blue line indicates the normal SSC condition (isometric-active stretch-active shortening). Red line indicates the SSC with interval (isometric-active stretch-isometric-active shortening). In the SSC with interval condition, the force quickly and substantially decreases immediately after the end of active stretch. This force loss would be derived from the detachment of elongated attached cross-bridges. Original figure made from authors’ published data (Reproduced with permission from Fukutani et al., 2017a).