Title

Effects of foot orthoses on dynamic balance and basketball free-throw accuracy before and after physical fatigue

RIS ID

138930

Publication Details

Lam, W., Lee, W. Chiu Chun ., Ng, S. & Zheng, Y. (2019). Effects of foot orthoses on dynamic balance and basketball free-throw accuracy before and after physical fatigue. Journal of Biomechanics, 19 109338-1-109338.

Abstract

While it is not uncommon for athletes to use foot orthoses to relieve pain and improve sports performance, little has been known about their effects on basketball performance. Free-throw basketball shooting is very important. However, fatigue deteriorates postural balance which might decrease free-throw shooting performance. This study investigated the effects of foot orthoses on dynamic balance and accuracy performance during free-throw shooting before and after physical fatigue was induced. Thirteen male recreational basketball players were tested with two foot orthoses (medial-arch support versus flat control) and fatigue conditions (before and after fatigue), when they performed standard free-throw shooting on a force platform. Results revealed that fatigue significantly increased coefficient of variance of medial-lateral center of pressure (CoP) excursion when participants worn flat control orthoses (p < 0.05). Meanwhile, foot orthoses improved dynamic balance during shooting as they significantly reduced total resultant and anterior-posterior sway excursions as well as resultant and anterior-posterior CoP velocities, and base of support area. Although this study found that fatigue and orthoses did not significantly affect the scores gained by free-throw shooting, the significant improvements in dynamic balance during shooting with the use of foot orthoses could have considerable impact on motor control during basketball shooting.

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.jbiomech.2019.109338