Tarigan, A. P., Simatupang, M., Egipson, ., Pandia, P., Pradana, A. ., Tarigan, A. H. ., Maryaningsih, ., Zulkarnain, ., Agustin, L. ., & Eyanoer, P. . (2025). Change of VO2 max and muscle mass after one-month and two-month upper and lower body exercises in stable chronic obstructive pulmonary disease. Acta Medica Bulgarica, 52(3), 32-37. https://doi.org/10.2478/AMB-2025-0058