Janse van Rensburg, L, and FF Coetzee. “Effect of Stretching Techniques on Hamstring Flexibility in Female Adolescents”. African Journal for Physical Activity and Health Sciences 20, no. 3-2 (February 16, 2015): 1237–1248. Accessed October 16, 2026. https://www.ajol.info/index.php/ajpherd/article/view/113138.