“Hubungan Aktivitas Fisik dengan Variabilitas Tekanan Darah pada Lansia di Daerah Istimewa Yogyakarta: The Relationship Between Physical Activity and Blood Pressure Variability Among Older Adults in the Special Region of Yogyakarta” (2026) Journal of Health, 13(2), pp. 290–298. doi:10.30590/joh.v13n2.286.