Russo, L., Padulo, J., Oliva, F., & Maffulli, N. (2021). Letter to Editor concerning “Push up, explosive push up and free fall tests to evaluate the upper body power: A preliminary study in aerobic gymnastics”. Journal of Human Sport and Exercise, 16(4), 996–999. Retrieved from https://www.jhse.ua.es/article/view/2021-v16-n4-letter-editor-push-explosive-push-free-fall-tests-ev