Assessment of Isometric Knee Flexor Strength Using Hand-Held Dynamometry in High-Level Rugby Players Is Intertester Reliable
| Autor: | Anne D. van der Made, Gustaaf Reurink, Johannes L. Tol, J. Nienke Altink, Liam D. A. Paget, Gino M. M. J. Kerkhoffs, Willem R. Six |
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| Přispěvatelé: | Orthopedic Surgery and Sports Medicine |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Male
Supine position Intraclass correlation Football Physical Therapy Sports Therapy and Rehabilitation Isometric exercise Muscle Strength Dynamometer Bench press 03 medical and health sciences 0302 clinical medicine Isometric Contraction Medicine Humans Orthopedics and Sports Medicine Knee 030212 general & internal medicine Muscle Strength Muscle Skeletal Fixation (histology) Hamstring injury Orthodontics Dynamometer business.industry Reproducibility of Results 030229 sport sciences medicine.disease musculoskeletal system Female business Knee flexor human activities |
| Zdroj: | Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine, 31(5), e271-e276 van der Made, A D, Paget, L D A, Altink, J N, Reurink, G, Six, W R, Tol, J L & Kerkhoffs, G M 2021, ' Assessment of Isometric Knee Flexor Strength Using Hand-Held Dynamometry in High-Level Rugby Players Is Intertester Reliable ', Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine, vol. 31, no. 5, pp. e271-e276 . https://doi.org/10.1097/JSM.0000000000000793 |
| ISSN: | 1536-3724 |
| DOI: | 10.1097/JSM.0000000000000793 |
| Popis: | Objective To assess intertester reliability of isometric knee flexor strength testing in high-level rugby players with testers of different physical capacity and different methods of dynamometer fixation. Design Reliability study. Patients Thirty noninjured high-level (Tegner Activity Score ≥9) rugby players, free from hamstring injury in the previous 2 months. Assessment Isometric knee flexor strength (in N) in prone 0/15 degrees (hip/knee flexion) and supine 90/90 degrees position. Tests were performed by 1 female and 2 male testers whose upper-body strength was measured with a 6-repetition maximum bench press test. The prone 0/15 degrees measurement was performed with manual and external belt fixation of the dynamometer. Main outcome measures Absolute and relative intertester reliability were calculated using intraclass correlation coefficient (ICC) and minimal detectable change. Paired t-tests were used to identify systematic measurement error between testers and to test for a difference in recorded knee flexor strength between methods of dynamometer fixation. Methods Isometric knee flexor strength was measured in prone 0/15 degrees (hip/knee flexion) and supine 90/90 degrees position. Results Good intertester reliability was found for all pairwise comparisons (ICC 0.80-0.87). MDCs (as percentage of mean strength) ranged from 15.2% to 25.4%. For tester couples where systematic error was identified, Bland-Altman plots and Pearson correlation coefficients demonstrated no statistically significant correlation between mean knee flexor strength and between-tester difference. There was no significant difference in isometric knee flexor strength between manual and belt fixation of the dynamometer. Conclusions In strong high-level rugby players, hand-held dynamometry for isometric knee flexor strength assessment in prone 0/15 degrees and supine 90/90 degrees position is intertester reliable. |
| Databáze: | OpenAIRE |
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