Sinurat, R. “Implementation Of The Evaluation Of The Volume Of Maximum Oxygen Uptake (Vo2 Max) Athletes Koni Rokan Hulu”. Jurnal Humanities Pengabdian Kepada Masyarakat, Vol. 2, no. 1, June 2021, pp. 1-5, doi:10.24036/jha.0201.2021.01.