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Altered Peak Knee Valgus during Jump-Landing among Various Directions in Basketball and Volleyball Athletes

Author(s):
Komsak SinsurinKomsak Sinsurin1, Roongtiwa VachalathitiRoongtiwa Vachalathiti1,*, Wattana JalayondejaWattana Jalayondeja1, Weerawat LimroongreungratWeerawat Limroongreungrat2
1Faculty of Physical Therapy, Mahidol University, Nakhon Pathom 73170, Thailand
2College of Sports Science and Technology, Mahidol University, Nakhon Pathom 73170, Thailand


Asian Journal of Sports Medicine:Vol. 4, issue 3; 195-200
Published online:May 04, 2013
Article type:Research Article
Received:Oct 13, 2012
Accepted:May 12, 2013
How to Cite:Komsak SinsurinRoongtiwa VachalathitiWattana JalayondejaWeerawat LimroongreungratAltered Peak Knee Valgus during Jump-Landing among Various Directions in Basketball and Volleyball Athletes.Asian J Sports Med.4(3):34258.https://doi.org/10.5812/asjsm.34258.

Abstract

Purpose:

Excessive knee valgus during landing tasks is a contributing factor to knee injuries. Most studies have examined lower extremity biomechanics during the forward direction of a jump-landing task. Athletes perform many movements in the air and land in multi-directions. Therefore, the purpose of this study was to assess the peak knee valgus angle (PKVA) during one leg jump-landing in various directions.

Methods:

Eighteen male basketball and volleyball athletes participated in the study. Participants performed one leg jump-landing tests from a 30 cm height platform in four directions. Knee valgus motion was measured using Vicon motion system. The data were analyzed with repeated measures ANOVA.

Results:

Direction significantly (P<0.001) influenced the PKVA during landing. Significantly higher PKVA was observed for the lateral (8.84.7) direction as compared to forward (5.84.6) direction (P<0.05). The PKVA in 30 diagonal (7.54.6) and 60 diagonal (7.75.7) directions was higher than in the forward direction (P<0.05).

Conclusion:

One leg jump-landing in lateral and diagonal directions results in a higher PKVA compared to landing in a forward direction and could lead to a higher risk of knee injury.

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