DAHMANI DJAMEL , AREZKI SMAIL, HADDACHE ABDELLAH, HAMANI IBRAHIM ,MAZARI FATAH 2025. Propose a training program using cross-training exercises and evaluate its effect on the development of (strength, speed, endurance, agility) in handball players under 18 years old. Pegem Journal of Education and Instruction. 15, 4 (Sep. 2025), 1114–1121.