From: Age-related increase in muscle stiffness is muscle length dependent and associated with muscle force in senior females
Knee angles
Young
Senior
p
30°
46.15 ± 9.46
40.40 ± 7.93
0.044
60°
82.40 ± 18.50
65.55 ± 15.52
0.003
90°
95.20 ± 22.50
64.15 ± 16.86
< 0.001