Baharuddin, M.Y., Shanmugam, M. and Choo, H.B. 2017. Biomechanics analysis on muscle activation during jumping jack exercise. Jurnal Sains Sukan & Pendidikan Jasmani. 6, 2 (Nov. 2017), 28–35. DOI:https://doi.org/10.37134/jsspj.vol6.2.3.2017.