Louw, AJ, A Van Biljon, and SC Mugandani. “Exercise Motivation and Barriers Among Men and Women of Different Age Groups”. African Journal for Physical Activity and Health Sciences 18, no. 4 (December 12, 2012): 759–768. Accessed September 21, 2026. https://www.ajol.info/index.php/ajpherd/article/view/83839.