@article{Seong-Deok Yoon2015jpts-2014-400, title={The effect of active core exercise on fitness and foot pressure in Taekwondo club students}, author={Seong-Deok Yoon and Dong-Hun Sung and Gi Duck Park}, journal={Journal of Physical Therapy Science}, volume={27}, number={2}, pages={509-511}, year={2015}, doi={10.1589/jpts.27.509} }