Ahmed, D.B.F. tran. 2026. THE EFFECT OF THE INITIAL SHOULDER ANGLE AND ARM ANGULAR VELOCITY ON BALL SPEED DURING THE JUMP SERVE IN MALE HIGH-SCHOOL VOLLEYBALL STUDENTS AGED 16–18 YEARS IN BAGHDAD. International Journal of Advance Research in Education & Literature (ISSN 2208-2441). 12, 3 (Jun. 2026), 58–62. DOI:https://doi.org/10.61841/frtqcg17.