20.500.12556/RUP-23536 Sprint and jump performance responses to curvilinear sprint training with and without a weighted vest in youth female soccer players Objectives: Evidence on the effects of curvilinear sprint (CS) training in female soccer players is limited. This study examined the effects of adding a weighted vest during CS training on sprint and vertical jump performance in youth female soccer players. Methods: Sixteen players were randomly assigned to a CS training group (CON; n = 8) or a weighted vest CS training group using 10% body mass (WV; n = 8) for six weeks (one session per week). Pre- and post-intervention testing included a 30-m linear sprint (LS), CS performed to the left and right sides, squat jump (SJ), and countermovement jump (CMJ). Peak sprinting speed (Speak) measured via Global Navigation Satellite System during LS, weaker-side, and stronger-side CS, as well as jump height, were analysed as primary outcomes. Curvilinear sprint asymmetry (CSASY) was calculated as a secondary outcome. Results: Paired-samples t-tests showed significant improvements in weaker-side CS for CON (+3.5%) and WV (+5.3%), accompanied by significant reductions in CSASY. Significant decreases in SJ and CMJ height were observed only in the CON group (−7.6 and −7.7%, respectively). The ANCOVA revealed greater post-intervention Speak in stronger-side and weaker-side CS for the WV group. Conclusion: Curvilinear sprint training improved weaker-side CS performance in youth female soccer players, whereas training with a weighted vest additionally mitigated declines in jumping performance. Curvilinear sprint training with or without a weighted vest may enhance direction-specific sprint speed in youth female soccer players. association football external load high-speed running vertical jump nogomet breme sprint navpični skok true false true Angleški jezik Slovenski jezik Članek v reviji 2026-08-23 23:24:48 2026-08-23 23:24:48 2026-08-24 03:07:32 0000-00-00 00:00:00 2026 0 0 str. 1-8 2026 0000-00-00 Zaloznikova VTisku NiDoloceno 0000-00-00 0000-00-00 2026-08-19 796.01 1747-9541 10.1177/17479541261479932 288573187 https://journals.sagepub.com/doi/10.1177/17479541261479932 1 d3eb2e34-9f38-11f1-9e8d-005056ac49c0 https://repozitorij.upr.si/Dokument.php?lang=slv&id=34893 https://doi.org/10.1177/17479541261479932 1 d45af379-9f38-11f1-9e8d-005056ac49c0 https://repozitorij.upr.si/Dokument.php?lang=slv&id=34894 RAZ_Sasek_Matic_2026.pdf RAZ_Sasek_Matic_2026.pdf 1 5F3E1A0DA521F3F4C1838922ED5D981F 974fd4df4152503e6477431562b4e45dead3dc1e1804e4db691fc1f0083c0ad1 01bd34a8-9f39-11f1-9e8d-005056ac49c0 https://repozitorij.upr.si/Dokument.php?lang=slv&id=34895 Fakulteta za vede o zdravju 0 0 0