The effect of elderly exercise on Peak Expiratory Flow Rate (PEFR) in the elderly at the Abdie Huffadz Bakti Foundation, Makassar. JKF [Internet]. 2026 Oct. 30 [cited 2026 Oct. 30];9(1):1-8. Available from: https://ejournal.medistra.ac.id/index.php/JKF/article/view/3615