Rocha, T. C., D. R. Ricardo, P. dos S. Ramos, and C. G. S. Araújo. “Effects of Ingesting 250 and 500 Ml of Water on Initial Transient Heart Rate and Heart Rate Variability”. Journal of Physical Education , Vol. 29, no. 1, Nov. 2017, p. e-2909, doi:10.4025/jphyseduc.v29i1.2909.