Time course of changes in muscle twitch force (Pt), Pt contraction time (Ct), relaxation to half Pt time (Rt) after 10, 50 and 100 DJs and 1, 4, 8, 24, 48 and 72 h after SSE (mean±
SD). SSE - stretch-shortening exercise (100 drop jumps performed from
0.5 m with counter-movement to 90 degrees in the knee with immediate
maximal rebound, with 30 s interval between the jumps). The dashed line
indicates the pre-exercise mean level.