Effects of Moderate-Intensity Walking Exercise on Sleep Quality and Cardiopulmonary Capacity in Sedentary Adolescents and Young Adults: A Systematic Review: Walking Exercise Berintensitas Sedang pada Kualitas Tidur dan Kapasitas Kardiopulmoner Remaja dan Dewasa Muda Sedentary: A Systematic Review. acopen. 2026;11(1):10.21070/acopen.11.2026.14000. doi:10.21070/acopen.11.2026.14000