{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,7]],"date-time":"2026-05-07T23:33:23Z","timestamp":1778196803205,"version":"3.51.4"},"reference-count":47,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2022,5,24]],"date-time":"2022-05-24T00:00:00Z","timestamp":1653350400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"national funds through the Foundation for Science and Technology","award":["UIDP\/04923\/2020"],"award-info":[{"award-number":["UIDP\/04923\/2020"]}]},{"name":"national funds through the Foundation for Science and Technology","award":["CP\/DD\/2022"],"award-info":[{"award-number":["CP\/DD\/2022"]}]},{"name":"Portuguese Institute for Sport and Youth-I.P., Support for Sport Activity 2022, Sport Development Program Agreement","award":["UIDP\/04923\/2020"],"award-info":[{"award-number":["UIDP\/04923\/2020"]}]},{"name":"Portuguese Institute for Sport and Youth-I.P., Support for Sport Activity 2022, Sport Development Program Agreement","award":["CP\/DD\/2022"],"award-info":[{"award-number":["CP\/DD\/2022"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biology"],"abstract":"<jats:p>Strength is essential for carrying out the usual activities of daily life. As there is a loss of strength in elderly, many treatments are based on delaying the loss of strength or maintaining it. Isokinetic dynamometry is the gold standard for assessing strength. It is essential that studies are conducted to allow us to identify the reliability of isokinetic strength assessments in older people. This study aimed to test the absolute and relative intra-session reliability of peak torque and work of a concentric knee extension-flexion performed at 60\u00b0\/s in elderly. Fifty-two elderly subjects performed three repetitions of bilateral concentric knee extension-flexion at 60\u00b0\/s using an isokinetic dynamometer. The relative and absolute reliability were calculated between the second and third repetition. The intra-class correlation coefficient values were between 0.94 and 0.98 for peak torque and work in all measures, which is considered \u201cexcellent\u201d, except for left leg flexors in women, with values between 0.85 and 0.88, which is considered \u201cgood\u201d. The standard error of measurement (SEM) percentage oscillated from 3.9% to 10.5%, with a smallest real difference (SRD) percentage of 10.9% to 29.2% for peak torque. The relative reliability of peak torque and work were excellent for all measures except flexors in women, evidencing the utility of isokinetic dynamometry for monitoring lower limb maximal muscle strength and work of concentric knee extension-flexion at 60\u00b0\/s\/s in the elderly. In addition, an SRD &gt; 19.9% in peak torque and an SRD &gt; 23.1% in work is considered a true change.<\/jats:p>","DOI":"10.3390\/biology11060802","type":"journal-article","created":{"date-parts":[[2022,5,24]],"date-time":"2022-05-24T22:04:06Z","timestamp":1653429846000},"page":"802","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":41,"title":["Test-Retest Reliability of Isokinetic Strength Measurements in Lower Limbs in Elderly"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5254-7409","authenticated-orcid":false,"given":"Jose A.","family":"Parraca","sequence":"first","affiliation":[{"name":"Departamento de Desporto e Sa\u00fade, Escola de Sa\u00fade e Desenvolvimento Humano, Universidade de \u00c9vora, 7004-516 \u00c9vora, Portugal"},{"name":"Comprehensive Health Research Centre (CHRC), University of \u00c9vora, 7004-516 \u00c9vora, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7203-3168","authenticated-orcid":false,"given":"Jos\u00e9 Carmelo","family":"Adsuar","sequence":"additional","affiliation":[{"name":"Promoting a Healthy Society (PHeSo), Faculty of Sport Science, University of Extremadura, 10003 C\u00e1ceres, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5388-2009","authenticated-orcid":false,"given":"Francisco Javier","family":"Dom\u00ednguez-Mu\u00f1oz","sequence":"additional","affiliation":[{"name":"Physical Activity and Quality of Life Research Group (AFYCAV), Faculty of Sport Science, University of Extremadura, 10003 C\u00e1ceres, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7128-5451","authenticated-orcid":false,"given":"Sabina","family":"Barrios-Fernandez","sequence":"additional","affiliation":[{"name":"Social Impact and Innovation in Health (InHEALTH), Faculty of Sports Sciences, University of Extremadura, 10003 C\u00e1ceres, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7780-3942","authenticated-orcid":false,"given":"Pablo","family":"Tomas-Carus","sequence":"additional","affiliation":[{"name":"Departamento de Desporto e Sa\u00fade, Escola de Sa\u00fade e Desenvolvimento Humano, Universidade de \u00c9vora, 7004-516 \u00c9vora, Portugal"},{"name":"Comprehensive Health Research Centre (CHRC), University of \u00c9vora, 7004-516 \u00c9vora, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2022,5,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"809","DOI":"10.2165\/00007256-200434120-00002","article-title":"Effects of aging on muscle fibre type and size","volume":"34","author":"Deschenes","year":"2004","journal-title":"Sports Med."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"131","DOI":"10.1136\/bjsm.37.2.131","article-title":"Feasibility of power-type strength training for middle aged men and women: Self perception, musculoskeletal symptoms, and injury rates","volume":"37","author":"Surakka","year":"2003","journal-title":"Br. 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