Chitbunchongchak C, Phongphibool S. THE EFFECT OF ECCENTRIC EXERCISE PROGRAM COMBINED MEDICINE BALL ON MUSCLE STRENGTH AND BALANCE IN MIDDLE ADULTHOOD. JSSH [internet]. 2025 Aug. 31 [cited 2026 Sep. 19];26(2):122-40. available from: https://he02.tci-thaijo.org/index.php/spsc_journal/article/view/271612