J. S. Lau, V. P. S. Tan, M. A. Vahidi, S. H. L. M. Azam, M. H. M. Zain, A. Azizan, M. Othman, and R. Ghafar "Single-leg Standing Ability and Lower Limb Movement Analysis of Collegiate Footballers and Sedentary Students", Advances in Science, Technology and Engineering Systems Journal, vol. 5, no. 1, pp. 01–07, 2020, doi: 10.25046/aj050101.