Rini, Maya Puspa, Rudy Handoyo, and Suhartono Suhartono. “Perbedaan Efektivitas Chair-Based Exercise Dan Senam Lansia Dalam Meningkatkan Fleksibilitas Lumbal Lanjut Usia”. Medica Hospitalia : Journal of Clinical Medicine 8, no. 1 (March 23, 2021): 1–6. Accessed January 6, 2025. http://medicahospitalia.rskariadi.co.id:8080/medicahospitalia/index.php/mh/article/view/552.