caa a22 4500 605457220 CHVBK 20210128100222.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s00167-013-2771-x doi (NATIONALLICENCE)springer-10.1007/s00167-013-2771-x Inter- and intrarater reliability of four single-legged hop tests and isokinetic muscle torque measurements in children [Elektronische Daten] [Marianne Johnsen, Ingrid Eitzen, Håvard Moksnes, May Risberg] Purpose: Single-legged hop tests and isokinetic muscle torque are common outcome measures in the evaluation of knee function. The reliability of the single-legged hop tests in children has not been documented. The aim was to examine inter- and intrarater reliability of four single-legged hop tests and isokinetic muscle torque measurements in children. Methods: Twenty-eight sports-active children (12.4±0.3years old) were tested three times in two test sessions separated by 1week. They performed four single-legged hop tests and concentric isokinetic torque measurements during knee extension and flexion. Inter- and intrarater reliability were calculated using the intraclass correlation coefficient (ICC 2,1). Relative terms of the standard error of measurement (SEM%) and smallest real difference (SRD%) were emphasized to allow comparison between the different variables. Results: Twenty-six children were included for statistical analysis. ICCs for inter- and intrarater reliability were moderate to high for the hop tests (0.62-0.91) and isokinetic measurements (0.76-0.87). SEMs% were low for the hop tests (3.9-7.4%) and the isokinetic measurements (5.2-8.9%). SRDs% were 20.5% or less for the hop tests, 15.7% or less for knee extension, and 24.6% or less for knee flexion. Conclusion: The single-legged hop tests and isokinetic muscle torque measurements demonstrated moderate-to-high reliability with low measurement error in sports-active children. A change above 20.5% for the single-legged hop tests, 15.7% for knee extension, and 24.6% for knee flexion is necessary to represent a real change in knee function. Level of evidence: III. Springer-Verlag Berlin Heidelberg, 2013 Performance-based tests nationallicence Lower extremity nationallicence Hop tests nationallicence Isokinetic dynamometry nationallicence Muscle strength nationallicence Reproducibility of results nationallicence Johnsen Marianne Department of Sport Medicine, Norwegian School of Sport Sciences, Norwegian Research Center for Active Rehabilitation (NAR), NAR/NIMI, Ullevål Stadion, PO-Box 3843, 0805, Oslo, Norway aut Eitzen Ingrid Department of Orthopedic Surgery, Oslo University Hospital, Norwegian Research Center for Active Rehabilitation (NAR), Oslo, Norway aut Moksnes Håvard Department of Sport Medicine, Norwegian School of Sport Sciences, Norwegian Research Center for Active Rehabilitation (NAR), NAR/NIMI, Ullevål Stadion, PO-Box 3843, 0805, Oslo, Norway aut Risberg May Department of Sport Medicine, Norwegian School of Sport Sciences, Norwegian Research Center for Active Rehabilitation (NAR), NAR/NIMI, Ullevål Stadion, PO-Box 3843, 0805, Oslo, Norway aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/7(2015-07-01), 1907-1916 0942-2056 23:7<1907 2015 23 167 https://doi.org/10.1007/s00167-013-2771-x text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00167-013-2771-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Johnsen Marianne Department of Sport Medicine, Norwegian School of Sport Sciences, Norwegian Research Center for Active Rehabilitation (NAR), NAR/NIMI, Ullevål Stadion, PO-Box 3843, 0805, Oslo, Norway aut NATIONALLICENCE 700 1- Eitzen Ingrid Department of Orthopedic Surgery, Oslo University Hospital, Norwegian Research Center for Active Rehabilitation (NAR), Oslo, Norway aut NATIONALLICENCE 700 1- Moksnes Håvard Department of Sport Medicine, Norwegian School of Sport Sciences, Norwegian Research Center for Active Rehabilitation (NAR), NAR/NIMI, Ullevål Stadion, PO-Box 3843, 0805, Oslo, Norway aut NATIONALLICENCE 700 1- Risberg May Department of Sport Medicine, Norwegian School of Sport Sciences, Norwegian Research Center for Active Rehabilitation (NAR), NAR/NIMI, Ullevål Stadion, PO-Box 3843, 0805, Oslo, Norway aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/7(2015-07-01), 1907-1916 0942-2056 23:7<1907 2015 23 167