Papadopoulos, C., Noussios, G., Manolopoulos, E., Kiritsi, O., Ntones, G., Gantiraga, E., & Gissis, I. (2011). Standing long jump and handheld halters: Is jumping performance improved?. Journal of Human Sport and Exercise, 6(2), 436–443. https://doi.org/10.4100/jhse.2011.62.24