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Titre : | The within-day and between-day reliability of using sacral accelerations to quantify balance performance (2016) |
Auteurs : | Jonathan M. Williams ; Christopher Dorey ; Suzannah Clark ; et al. |
Type de document : | Article |
Dans : | Physical therapy in sport (2016/1, January 2016) |
Article en page(s) : | p. 45-50 |
Langues: | Anglais |
Résumé : |
Objectives To investigate the between-day and within-day reliability of a sacral mounted accelerometer to quantify balance performance and different balance metrics. Design Experimental, cross-sectional. Setting Laboratorial experiment. Participants Thirty healthy volunteers. Main outcome measures Balance tasks were double leg stance, tandem stance and single leg stance with eyes open and closed. Performance was measured by converting accelerations into path length (PL, length of the sway trace), jerk (jerkiness of sway trace) and root mean square (RMS) of the accelerations. Results Within-day ICC for PL were excellent (mean 0.78 95%CI 0.680.89), with Jerk and RMS demonstrating means of 0.60 and 0.47, respectively. The mean percentage minimal detectable change (MDC) within-day were smallest for PL and varied with task. Between-day ICC were smallest for PL (mean 31.4%; 95%CI 17.645.3%), but more varied for Jerk and RMS. The mean percentage MDC was small for PL (mean 6.1%, 95%CI 5.07.2). No significant differences were determined for measurements between-days for any metric or task. PL had the highest discriminatory value between the 8 tasks. Conclusions The sacral mounted accelerometer reliably measured balance performance within- and between-days. The PL is the recommended metric as it was the most reliable, most discriminatory and most sensitive to change. Keywords |
Disponible en ligne : | Oui |
En ligne : | https://login.ezproxy.vinci.be/login?url=https://www.sciencedirect.com/science/article/pii/S1466853X15000346 |