Rapid impulse loaded may be transferred to the lower extremity from ground contact in a condition that landing from a jump may be decreased the dynamic postural stability in female. The purpose of this study was to investigate the gender’s differenc...
Rapid impulse loaded may be transferred to the lower extremity from ground contact in a condition that landing from a jump may be decreased the dynamic postural stability in female. The purpose of this study was to investigate the gender’s difference in dynamic postural stability and peak vertical force during single leg landing. A total of twelve subjects(male n=6, range: age 20~22 years, heights 166.23~177.10 cm, weights 58.61~86.51 kg, female n=6, range: age 19~21 years, heights 156.90~169.21 cm, weights 48.61~72.91 kg) participated in this study. The peak vertical force and dynamic postural stability index(medial-lateral, anterior-posterior, and vertical stability index) were determined by time-function and frequency domain during drop landing. A mixed model(2 gender×2 landing legs) of repeated measures design was used to determine the effects of gender and limb dominance on dynamic postural stability and peak vertical force. The peak vertical force in female group showed significant difference statistically with more higher force than that of male group. Also, MLSI, VSI, and DPSI in male group showed significant difference statistically with more decreased than that of female group. VSI in right leg showed significant difference statistically with more decreased than that of left leg. The results indicate that females have higher dynamic postural stability scores in the vertical and medial-lateral direction as well as the composite score. This suggests that female used different dynamic postural stability and shock absorption strategies in contrast to male.