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Measuring Quadriceps strength in adults with severe or moderate intellectual and visual disabilities: Feasibility and reliability
Author(s) -
Dijkhuizen Annemarie,
Douma Rob K.,
Krijnen Wim P.,
van der Schans Cees P.,
Waninge Aly
Publication year - 2018
Publication title -
journal of applied research in intellectual disabilities
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.056
H-Index - 63
eISSN - 1468-3148
pISSN - 1360-2322
DOI - 10.1111/jar.12468
Subject(s) - intraclass correlation , reliability (semiconductor) , test (biology) , physical medicine and rehabilitation , pearson product moment correlation coefficient , physical therapy , mathematics , interclass correlation , statistics , audiology , psychology , reliability engineering , medicine , psychometrics , engineering , paleontology , power (physics) , physics , quantum mechanics , biology
Background A feasible and reliable instrument to measure strength in persons with severe intellectual and visual disabilities ( SIVD ) is lacking. The aim of our study was to determine feasibility, learning period and reliability of three strength tests. Methods Twenty‐nine participants with SIVD performed the Minimum Sit‐to‐Stand Height test ( MSST ), the Leg Extension test ( LE ) and the 30 seconds Chair‐Stand test (30s CS ), once per week for 5 weeks. Feasibility was determined by the percentage of successful measurements; learning effect by using paired t test between two consecutive measurements; test–retest reliability by intraclass correlation coefficient and Limits of Agreement and, correlations by Pearson correlations. Results A sufficient feasibility and learning period of the tests was shown. The methods had sufficient test–retest reliability and moderate‐to‐sufficient correlations. Conclusion The MSST , the LE , and the 30s CS are feasible tests for measuring muscle strength in persons with SIVD , having sufficient test re‐test reliability.