<![CDATA[This study examined the effect of an educational program incorporating biomechanical feedback on long-jump take-off variables, technical performance, and achievement among sixth-grade primary-school students. A randomized pre-test-post-test control-group design was used. Thirty students were allocated equally to an experimental group (n = 15) and a control group (n = 15). Over eight weeks, the experimental group completed 16 instructional units that combined corrective exercises, task-specific practice, slow-motion video, and KINOVEA-supported biomechanical feedback; the control group received the school's usual physical-education instruction. Outcomes were take-off angle, take-off speed, expert-rated technical performance, and jump distance. In the experimental group, the take-off angle changed from 44.10 ± 5.22° to 25.21 ± 2.34°, take-off speed from 4.06 ± 0.75 to 7.10 ± 3.50 m/s, technical performance from 4.00 ± 0.50 to 6.20 ± 0.45 points, and jump distance from 2.10 ± 0.30 to 2.90 ± 0.25 m. Paired-sample tests were significant for all four outcomes, t(14) = 4.80-6.20, p < .001. Post-test comparisons also favored the experimental group, t(28) = 2.88-5.10, p = .007 to < .001. These findings suggest that the program may improve long-jump learning and performance in this sample; interpretation should remain cautious because the study involved one school, a small sample, and no retention test.]]>
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