Zaini Hasan. “THE EFFECT OF LEG MUSCLE STRENGTH TRAINING ON SQUATTING LONG JUMP ABILITY IN STUDENTS OF SENIOR HIGH SCHOOL 1 KUTACANE CLASS XI SCHOOL YEAR 2024/2025”. Jurnal Penelitian Progresif, Vol. 3, no. 2, Aug. 2024, pp. 88-91, doi:10.61992/jpp.v3i2.272.