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Abstract Details

Abstract Title

Test-retest reliability and minimal detectable change scores of twelve functional fitness tests in adults with Down syndrome

Abstract Theme

Physical activity and health

Type Presentation

Oral presentation

Abstract Authors

Presenter Pieter-Henk Boer - North West University (Sport Science) - ZA
Sarah - North West University (PHASREC) - ZA

Presentation Details

Room: Marte        Date: 1 September        Time: 12:10:00        Presenter: Pieter-Henk Boer

Abstract Resume

Background: The purpose of the study was to explore the test-retest reliability and minimal detectable change of selected functional fitness test items in adults with Down syndrome.
Methods: Forty-three adults with Down syndrome (24 men and 19 women) aged 18–50 years completed a battery of tests twice in a two-week period. The battery of tests consisted of two
balance items, two flexibility items, five muscular strength and endurance items, two aerobic items, and one functional task. All  items were considered valid and reliable tests in a general elderly
or intellectually disabled population. The test-retest relative reliability for all repeated tests was assessed with intraclass correlation coefficient performing one-way analysis of variance. The
test-retest absolute variability was measured by using the standard error of measurement (SEM) to calculate the minimal detectable change at the 90% confidence interval (MDC90). Reliability data was
visualised with a Bland-Altman plot. Results: All tests showed excellent intraclass correlation coefficients (ICC’s>0.9). All SEM values demonstrated acceptable measurement precision
(SEMConclusions: All twelve functional fitness tests demonstrated adequate feasibility and relative and absolute test-retest reliability in adults with Down syndrome in South Africa.
Information of this nature will help to monitor performance alterations over time and success of training interventions.


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