Sepang, Onan, Bambang Rahardjo, Sulaiman Sulaiman, and Sri Sumartiningsih. “The Effect of Interval Training on Lung Vital Capacity of Futsal Athletes State High School 1 Toili Banggai Regency”. Journal of Physical Education and Sports 11, no. 4 (December 30, 2022): 499-503. Accessed July 3, 2024. https://journal.unnes.ac.id/sju/jpes/article/view/72026.