Table 1.  Comparison mean (ąSD)  of jumping height, and lower extremity kinematics between hop-jump and step-close-jump tasks.
 

Hop-jump

Step-close-jump

Jumping height (m)

.32 (.04)

.32 (.04)

Hip angle at initial foot contact with ground (deg)

108.9 (3.9)

117.9 (6.2) ***

Knee angle at initial foot contact with ground (deg)

144.9 (6.7)

156.8 (3.7) ***

Hip angular displacement during landing (deg)

7.5 (6.7)

20.7 (5.8) ***

Knee angular displacement during landing (deg)

50.1 (8.2)

64.5 (8.5) ***

Hip angular velocity at initial foot contact with ground (deg/sec)

-2.08 (1.52)

-4.53 (2.61) **

Knee angular velocity at initial foot contact with ground (deg/sec)

-5.77 (. 94)

-5.07 (1.47)

** and *** denote p < 0.01 and 0.001 respectively