The within-day and between-day reliability of using sacral accelerations to quantify balance performance
Authors: Williams, J.M., Dorey, C., Clark, S. and Clark, C.
Journal: Physical Therapy in Sport
Volume: 17
Pages: 45-50
eISSN: 1873-1600
ISSN: 1466-853X
DOI: 10.1016/j.ptsp.2015.04.002
Abstract: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 0.68-0.89), with Jerk and RMS demonstrating means of 0.60 and 0.47, respectively. The mean percentage minimal detectable change (MDC) within-day were small for PL (mean 6.7%, 95%CI 5.3-8.1).Between-day ICC were good for PL (mean 0.61, 95%CI 0.50-0.71), but more varied for Jerk and RMS. The mean percentage MDC was small for PL (mean 6.1%, 95%CI 5.0-7.2). 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.
https://eprints.bournemouth.ac.uk/23787/
Source: Scopus
The within-day and between-day reliability of using sacral accelerations to quantify balance performance.
Authors: Williams, J.M., Dorey, C., Clark, S. and Clark, C.
Journal: Phys Ther Sport
Volume: 17
Pages: 45-50
eISSN: 1873-1600
DOI: 10.1016/j.ptsp.2015.04.002
Abstract: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 0.68-0.89), with Jerk and RMS demonstrating means of 0.60 and 0.47, respectively. The mean percentage minimal detectable change (MDC) within-day were small for PL (mean 6.7%, 95%CI 5.3-8.1). Between-day ICC were good for PL (mean 0.61, 95%CI 0.50-0.71), but more varied for Jerk and RMS. The mean percentage MDC was small for PL (mean 6.1%, 95%CI 5.0-7.2). 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.
https://eprints.bournemouth.ac.uk/23787/
Source: PubMed
The within-day and between-day reliability of using sacral accelerations to quantify balance performance
Authors: Williams, J.M., Dorey, C., Clark, S. and Clark, C.
Journal: PHYSICAL THERAPY IN SPORT
Volume: 17
Pages: 45-50
ISSN: 1466-853X
DOI: 10.1016/j.ptsp.2015.04.002
https://eprints.bournemouth.ac.uk/23787/
Source: Web of Science (Lite)
The within-day and between-day reliability of using sacral accelerations to quantify balance performance
Authors: Williams, J., Dorey, C., Clark, C. and Clark, S.
Journal: Physical Therapy in Sport
https://eprints.bournemouth.ac.uk/23787/
Source: Manual
Preferred by: Jonathan Williams
The within-day and between-day reliability of using sacral accelerations to quantify balance performance.
Authors: Williams, J.M., Dorey, C., Clark, S. and Clark, C.
Journal: Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine
Volume: 17
Pages: 45-50
eISSN: 1873-1600
ISSN: 1466-853X
DOI: 10.1016/j.ptsp.2015.04.002
Abstract: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 0.68-0.89), with Jerk and RMS demonstrating means of 0.60 and 0.47, respectively. The mean percentage minimal detectable change (MDC) within-day were small for PL (mean 6.7%, 95%CI 5.3-8.1). Between-day ICC were good for PL (mean 0.61, 95%CI 0.50-0.71), but more varied for Jerk and RMS. The mean percentage MDC was small for PL (mean 6.1%, 95%CI 5.0-7.2). 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.https://eprints.bournemouth.ac.uk/23787/
Source: Europe PubMed Central
The within-day and between-day reliability of using sacral accelerations to quantify balance performance.
Authors: Williams, J.M., Dorey, C., Clarke, S. and Clark, C.J.
Journal: Physical Therapy in Sport
Volume: 17
Pages: 45-50
ISSN: 1466-853X
Abstract: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 0.68-0.89), with Jerk and RMS demonstrating means of 0.60 and 0.47, respectively. The mean percentage minimal detectable change (MDC) within-day were small for PL (mean 6.7%, 95%CI 5.3-8.1). Between-day ICC were good for PL (mean 0.61, 95%CI 0.50-0.71), but more varied for Jerk and RMS. The mean percentage MDC was small for PL (mean 6.1%, 95%CI 5.0-7.2). 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.
https://eprints.bournemouth.ac.uk/23787/
Source: BURO EPrints