Table 4. Parameters of joint spring-mass model during vertical jumping. Data are means (±SD).
Young Group Older Group
Hip Normalized Mhip-minimally (Nm·kg-1) 2.40 (.39) 1.71 (.39) *
Δθhip (degree) 94.91 (12.81) 74.87 (15.08) *
Normalized khip (Nm·kg-1·degree-1) .03 (.00) .02 (.00)
Knee Normalized Mknee-minimally (Nm·kg-1) 1.48 (.15) .78 (.28) *
Δθknee (degree) 95.21 (8.34) 88.62 (13.57)
Normalized kknee (Nm·kg-1·degree-1) .02 (.00) .01 (.00) *
Ankle Normalized Mankle-minimally (Nm·kg-1) 1.71 (.22) 1.46 (.20)
Δθankle (degree) 37.18 (1.35) 32.26 (7.51)
Normalized kankle (Nm·kg-1·degree-1) .05 (.01) .05 (.02)
* significant difference between groups, p < 0 .05.