The Effect Of A Proposed Training Program According To The Method Of Integrated Learning (Physical, Technical And Tactical ) On The Improvement Of Some Physical Demands For Football Players U21. JNS [Internet]. 2023 May 20 [cited 2025 Nov. 5];33:3681-97. Available from: https://www.namibian-studies.com/index.php/JNS/article/view/3182