Dr. Mohammed Mutlaq Bader Al-Haj Lazim 2021. The use of training tools to develop the kinetic velocity and its impact on the time of maximum power and the performance of basketball defender under the age of (18) years old. مجلة علوم الرياضة. 13, 49 (2021), 267–281. DOI:https://doi.org/10.26400/sp/49/15.