Ruckman, Sarah, Jaeho Shim, Yunsuk Koh, and Teresa Bachman. “Effectiveness of Lifetime Fitness Course Activities in Improving Movement Efficiency”. International Journal of Physical Education, Fitness and Sports 13, no. 3 (September 16, 2024): 34–39. Accessed October 6, 2025. https://ijpefs.in/index.php/ijpefs/article/view/4.