1.
Nugraha AD, Yudanto Y, Bahri S. The impact of using surgical masks and non-masks when exercising on heart rate, calories and VO2max during the Covid-19 pandemic. SPORTIF [Internet]. 2021Apr.17 [cited 2024Nov.22];7(1):84-2. Available from: https://ojs.unpkediri.ac.id/index.php/pjk/article/view/15698