Table 1. Comparison of the RoM, peak vGRF (vGRF1 and vGRF2), and absolute occurrence time (t_vGRF1 and t_vGRF2) (mean ± SD) in the sagittal plane during landings between pre- and post-fatigue conditions.
Protocols Fatigue RoMH (°) * RoMK (°) * RoMA (°) * vGRF1 (BW) t_vGRF1 (ms) vGRF2 (BW) t_vGRF2 (ms)
R-FP pre 48.5 ± 17.9 73.8 ± 14.9 44.2 ± 9.0 1.2 ± 0.5 12.2 ± 1.8 5.8 ± 0.9 33.6 ± 6.5
post 53.7 ± 17.5 78.9 ± 15.9 40.2 ± 9.5 1.1 ± 0.4 12.7 ± 2.6 5.8 ± 1.0 32.7 ± 7.5
SJ-FP pre 50.4 ± 14.2 73.6 ± 13.4 37.9 ± 9.8 1.2 ± 0.5 11.9 ± 3.8 6.0 ± 0.8 33.3 ± 8.8
post 58.6 ± 15.8 83.7 ± 13.5 40.4 ± 9.6 1.4 ± 0.3 11.6 ± 3.5 5.9 ± 0.9 29.9 ± 10.4
* Significant differences between pre- and post-fatigue conditions, with p < 0.05.
† Significant fatigue × protocol interaction effects, with p < 0.05. R-FP = fatigue protocol with constant speed running; SJ-FP = fatigue protocol with shuttle sprint plus vertical jump; pre = pre-fatigue; post = post-fatigue; RoMH = the range of motion of the hip; RoMK = the range of motion of the knee; RoMA = the range of motion of the ankle; vGRF1, vGRF2 = the first and second peaks of the vertical ground reaction forces; t_vGRF1, t_vGRF2 = the absolute time from contact to vGRF1, vGRF2; BW = body weight.