BTrackS limits of stability test is a reliable assessment of volitional dynamic postural control |
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| Affiliation: | 1. Department of Human Movement Science, School of Health Sciences, Oakland University, Rochester, MI, 48309, United States;2. Department of Kinesiology, School of Natural and Applied Sciences, Taylor University, Upland, IN, 46989, United States;1. Department of Physical Therapy/Motion Analysis Center, Central Michigan University, United States;2. Department of Health Sciences, Central Michigan University,United States;1. MS Service, NHS Ayrshire and Arran, Scotland, UK;2. School of Health and Life Sciences, Glasgow Caledonian University, Glasgow, UK;1. School of Sport, Rehabilitation and Exercise Sciences, University of Essex, Colchester, Essex, CO4 3SQ, United Kingdom;2. Department of Statistics, Ludwig-Maximilians-Universität München, Germany;3. Chair of Statistics, School of Business and Economics, Humboldt University of Berlin, Germany;4. Centre of Precision Rehabilitation for Spinal Pain (CPR Spine), School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Edgbaston B152TT, United Kingdom;5. LUNEX International University of Health, Exercise and Sports, 50, avenue du Parc des Sports, L-4671 Differdange, Luxembourg;1. Institute of Sports Science, Friedrich Schiller University of Jena, Jena, Germany;2. Department of Sport and Movement Science, Institute of Sport Science, Carl von Ossietzky University of Oldenburg, Oldenburg, Germany;3. Department for Exercise & Health, Institute of Sport Science, Leibniz University Hannover, Hannover, Germany;1. School of Health and Welfare, Jönköping University, Jönköping, Sweden;2. School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom |
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| Abstract: | BackgroundUnconstrained limits of stability assessment reveals aspects of volitional postural sway control that are inaccessible by other means. Prior versions of this assessment include instructions to sway towards predefined targets, and may not capture the full capability of the individual.Research questionThis study sought to establish the test-retest reliability of a novel limits of stability protocol.MethodsVolitional sway area was determined during unconstrained trials, where participants were instructed to explore their ability to sway towards the perimeter of their base of support. Visual feedback was provided via computer monitor. Forty healthy young adults (mean age = 20.2 ± 1.3, 15 males, 25 females) participated in this study. Trials were collected in three sessions, repeated at the same time of the same day, with one week between. Reliability was assessed using IntraClass Correlation Coefficients (ICC), considering the total area of sway as well as quadrant level area.ResultsReliability was moderate between the first and second session (0.583), and much higher 0.921) between the second and third session. The quadrant level reliability was poor to excellent (0.183−0.791), with similar trends between the three sessions.SignificanceUltimately, these results indicate that the novel limits of stability test is reliable. However, it is recommended that a practice trial be conducted prior to baseline establishment. |
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| Keywords: | Balance Intraclass Correlation coefficient Postural sway |
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