Test-Retest Reliability of Isokinetic Knee Strength Measurements in Children Aged 8 to 10 Years

Sports Health
Kristina FagherAnna Maria Drake

Abstract

Isokinetic dynamometry is a useful tool to objectively assess muscle strength of children and adults in athletic and rehabilitative settings. This study examined test-retest reliability of isokinetic knee strength measurements in children aged 8 to 10 years and defined limits for the minimum difference (MD) in strength that indicates a clinically important change. Isokinetic knee strength measurements (using the Biodex System 4) in children will provide reliable results. Descriptive laboratory study. In 22 healthy children, 5 maximal concentric (CON) knee extensor (KE) and knee flexor (KF) contractions at 2 angular velocities (60 deg/s and 180 deg/s) and 5 maximal eccentric (ECC) KE/KF contractions at 60 deg/s were assessed 7 days apart. The intraclass correlation coefficient (ICC2.1) was used to examine relative reliability, and the MD was calculated on the basis of standard error of measurement. ICCs for CON KE/KF peak torque measurements were fair to excellent (range, 0.49-0.81). The MD% values for CON KE and KF ranged from 31% to 37% at 60 deg/s and from 34% to 39% at 180 deg/s. ICCs in the ECC mode were good (range, 0.60-0.70), but associated MD% values were high (>50%). There was no systematic error for CON KE/KF and ECC ...Continue Reading

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Citations

Nov 30, 2018·Journal of Applied Physiology·James L NuzzoSimon C Gandevia
Dec 18, 2018·Pediatric Physical Therapy : the Official Publication of the Section on Pediatrics of the American Physical Therapy Association·Susan KlepperSamantha Sawade
Apr 9, 2019·International Journal of Sports Physiology and Performance·Mostafa ZareiRoland Rössler
Sep 16, 2020·European Journal of Applied Physiology·Nikolaos PentidisAdamantios Arampatzis
Jun 4, 2019·Hong Kong Physiotherapy Journal : Official Publication of the Hong Kong Physiotherapy Association Limited = Wu Li Chih Liao·Daniel SimpsonKenneth Monaghan
May 18, 2021·International Biomechanics·Jamie E HibbertZachary J Domire
Sep 3, 2021·Physiotherapy Theory and Practice·Juliana CardosoCamilaIsabel Santos Schivinski

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Software Mentioned

KinCom
Biodex System

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