Table 2 Comparison mean (±SD) of GRF, loading rate, knee extension moment, and proximal tibia anterior shear force lower extremity during landing between hop-jump and step-close-jump tasks.
Hop-jump
Step-close-jump
Peak posterior GRF during landing (BW)
-1.26 (.08)
-.71 (.15) ***
Peak vertical GRF during landing (BW)
1.85 (.23)
1.83 (.17)
Time at which peak vertical GRF occurred following initial foot contact the with ground (sec)