20.500.12556/RUL-184527 Intra-session reliability and criterion validity of belt-fixated crane scale knee strength measures at different knee flexion angles This study aimed to assess the intra-session reliability of knee extension, flexion, and the flexion-to-extension isometric strength ratio using a belt-fixated crane scale protocol at 60° and 90° knee flexion angle positions. Validity was examined by comparison with a gold-standard rigid-chair isometric knee dynamometer. Twenty-six physical education students completed the testing. Both protocols showed good-to-excellent reliability for maximal strength (peak torque in Nm/kg) and flexor-to-extensor ratios at both angles (ICC$_{2.1}$ ≥ 0.84; CV% ≤ 8.2). Strength values were lower at 90° compared to 60° (p < .05). The crane scale overestimated knee flexion strength (6–9%) and flexor-to -extensor ratios (51–54% vs. 40–44%), but underestimated extension strength (16–18%). Strength measures correlated significantly between devices and angles (r from 0.52 to 0.86), but no significant correlations were found for ratios. Findings suggest that testing device and knee flexion angle substantially affect outcomes and should not be used interchangeably. sport muscle force joint torque dynamometry peak torque agonist-to-antagonist ratio šport mišična sila navor sklepa dinamometrija največji navor razmerje med agonisti in antagonisti true false true Angleški jezik Slovenski jezik Članek v reviji 2026-07-09 09:31:44 2026-07-09 09:31:46 2026-07-10 04:10:49 0000-00-00 00:00:00 2026 0 0 15 str. Vol. iss. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 796.01 1532-7841 10.1080/1091367X.2026.2627981 268776451 Intra-Session_Reliability_and_Criterion_Validity_of_Belt-Fixated_Crane_Scale_Knee_Strength_Measures_at_Different_Knee_Flexion_Angles.pdf Intra-Session_Reliability_and_Criterion_Validity_of_Belt-Fixated_Crane_Scale_Knee_Strength_Measures_at_Different_Knee_Flexion_Angles.pdf 1 FC9BA0127CD1390D8E061D13ECEBF42C faf5307b63b5ad4189a897538165940a09e47f567ebbc767f41ec86029f01314 06b7a288-7b6d-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=237406 https://www.tandfonline.com/doi/full/10.1080/1091367X.2026.2627981 0 ebcd0c09-7b6c-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=237405 Fakulteta za šport 0 0 0