Mulyawan, R., Prasetyo, Y., Arjuna, F., Sumaryanti and Nugroho, S. 2021. Fitness level and the relationship between heart rate, body water, dehydration symptoms in adolescents during a pandemic. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran. 7, 3 (Dec. 2021), 347–366. DOI:https://doi.org/10.29407/js_unpgri.v7i3.16586.