20.500.12556/RUL-184832 Kriterijska veljavnost meritev največjega navora upogibalk in iztegovalk trupa z izometričnim dinamometrom magistrsko delo CRITERION VALIDITY OF TRUNK FLEXOR AND EXTENSOR MAXIMAL TORQUE MEASUREMENT WITH AN ISOMETRIC DYNAMOMETER Namen raziskave je bil preveriti znotrajobiskovno zanesljivost in kriterijsko veljavnost linearnega dinamometra Back Check® (model 607; Dr. Wolff®, Sports & Prevention GmbH, Arnsberg, Germany) glede na zlati standard Biodex® izokinetični dinamometer (Model 2000, System 4 Pro; BiodexCorporation, Shirley, NY, USA) za namene meritev največjega navora upogibalk in iztegovalk trupa v izometričnih pogojih. V raziskavo je bilo vključenih 43 posameznikov (25 žensk in 18 moških). Udeleženci so v istem obisku v naključnem vrstnem redu opravili tri meritve, dve na linearnem (v sedečem in stoječem položaju) in eno na rotatornem dinamometru. Pri analizi smo upoštevali največjo vrednost navora pri treh ponovitvah testa. Znotrajobiskovno zanesljivost smo ocenili z intraklasnim korelacijskim koeficientom (ICC) in koeficientom variance (CV). Kriterijsko veljavnost smo izračunali s parnim t-testom za odvisne vzorce (Wilcoxonovim testom rangov, kjer predpostavka normalne porazdelitve razlik ni bila izpolnjena, normalnost porazdelitve smo preverjali s Shapiro-Wilk testom) ter Bland-Altmanovo analizo. Rezultati so pokazali statistično značilne razlike med rezultati, izmerjenimi z Biodexovim dinamometrom, pri vseh testih razen testu upogiba trupa na Back Check® dinamometru sede (p=0,32). Bland-Altmanova analiza je pokazala največje ujemanje pri istem testu. Na podlagi rezultatov lahko zaključimo, da je pri meritvah največjega navora trupa na linearnem dinamometru največje ujemanje z zlatim standardom pri merjenju največjega navora upogibalk trupa sede. Ostale meritve so pokazale kljub dobri ponovljivosti sistematične razlike, ki onemogočajo izmenično uporabo obeh naprav. The aim of the study was to examine the intra-observer reliability and criterion validity of the Back Check® linear dynamometer (model 607; Dr. Wolff®, Sports & Prevention GmbH, Arnsberg, Germany) against the gold standard Biodex® isokinetic dynamometer (Model 2000, System 4 Pro; BiodexCorporation, Shirley, NY, USA) for the measurement of peak torque of trunk flexors and extensors under isometric conditions. The study included 43 individuals (25 women and 18 men). Participants performed three measurements in random order during the same visit, two on the linear dynamometer (in the sitting and standing positions) and one on the rotator dynamometer. The highest value of the three measurements was used for analysis. Intra-observer reliability was assessed using the intraclass correlation coefficient (ICC) and the coefficient of variance (CV). Criterion validity was calculated using a paired t-test for dependent samples (Wilcoxon rank test where the assumption of normal distribution of differences was not met, normality of distribution was checked with the Shapiro-Wilk test) and Bland-Altman analysis. The results showed statistically significant differences between measurements with the Biodex dynamometer in all tests except the trunk flexion test on the Back Check® sitting dynamometer (p=0.32). Bland-Altman analysis showed the highest agreement in the same test. Based on this, we can conclude that the measurements of maximum trunk torque on the linear dynamometer have the highest agreement with the gold standard in measuring trunk flexion in sitting. The other measurements showed, despite good repeatability, systematic differences that make it impossible to use both devices interchangeably. največji izometrični navor iztegovalke trupa upogibalke trupa maximal isometric torque trunk extension trunk flexion true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2026-07-16 07:15:55 2026-07-16 07:16:15 2026-08-05 14:17:49 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 66219 286832387 34869.pdf 34869.pdf 1 DDC4E9ED731040AA1DE390B735F5A20E fdfdf719fffd74cb0509f691a22e2a5c90c9f6d8156612119d9225ff2dc7e092 49fd30c1-80d5-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=240146 Fakulteta za šport 0 0 0