Figure 4

Change in relative muscle force and stiffness during isometric force redevelopment following active shortening at different velocities. Data points (n = 7 muscles per group) are means across muscles with error bars representing S.D. (a) Relative force increases with increasing pause duration. The rate of increase varies with shortening velocity. (b) Relative stiffness increases with increasing pause duration and shortening velocity affects the stiffness vs. pause duration relationship. The slope of the relationship increases with increasing shortening velocity.