Leporace, Gustavo, et al. “Comparison of Myoelectric Activity of Gluteus Maximus and Biceps Femoris Between Parallel and Lunge Squat”. Brazilian Journal of Physical Education and Sport, vol. 26, no. 3, Sept. 2012, pp. 383-9, https://doi.org/10.1590/S1807-55092012000300004.