Fong, S. S., Cheung, C. K., Ip, J. Y., Chiu, J. H., Lam, K. L. and Tsang, W. W. (2012) “Sport-specific balance ability in Taekwondo practitioners”, Journal of Human Sport and Exercise, 7(2), pp. 520–526. doi: 10.4100/jhse.2012.72.15.