Ghazi, Abdul wahaab, and Mortadha Hasson. “The Effect of Physical Effort On Some Motor Abilities Performance and Defensive Movement In Handball Players Aged 16 – 17 Years Old”. Journal of Physical Education, vol. 31, no. 1, Mar. 2019, pp. 90-99, https://doi.org/10.37359/JOPE.V31(1)2019.816.