Gunawan, Gunawan, and Andi Saparia. “Age-Defying Fitness: How Can Combining Resistance and Aerobic Exercise Help Elderly Adults Increase Muscle Strength?”. Journal Sport Area 8, no. 2 (June 24, 2023): 195–206. Accessed July 22, 2026. https://journal.uir.ac.id/index.php/JSP/article/view/11630.