Singh, S. P. A Comparative Study of Physical Fitness Levels: Administration and Analysis of Endurance, Leg Strength, Speed, and Agility Tests in Sportsmen and Non-Sportsmen. Int. J. Sci. Soc. Sci. Res. 2024, 2 (3), 288-292. https://doi.org/10.63671/ijsssr.v2i3.158.