Kazem, Alaa, و Ehab Hussein. "The Effects of Single Deep Jump Training on Slopes on Selected Biomechanical Variables of the Triple Jump in Athletes Under 20 Years of Age". Journal of Physical Education, م 37, عدد 4, ديسمبر، 2025, ص 1220-31, https://doi.org/10.37359/JOPE.V37(4)2025.2181.