Objective quantification of a clinical dynamic balance assessment

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Title: Objective quantification of a clinical dynamic balance assessment
Authors: Johnston, William
Moran, Thomas
Dolan, Kara
Reid, Niamh
Caulfield, Brian
Permanent link: http://hdl.handle.net/10197/9650
Date: 25-May-2017
Online since: 2019-03-21T15:39:37Z
Abstract: Objective: To investigate whether addition of inertial sensor data can provide additional insight into the nature of postural stability deficits during a clinical dynamic balance assessment, with a view to enhancing accuracy of post-concussion monitoring protocols. Design: Descriptive laboratory study. Setting: University performance laboratory. Participants: Fifteen physically active adults (age 234 years, height 1758 cm, weight 67.58 kg). Interventions: An inertial measurement unit (IMU) was mounted at the level of the 4th lumbar vertebra. Subjects completed repeated Y-Balance tests (YBT) 10 minutes and immediately prior to a modified 60 second Wingate anaerobic fatiguing test. Post-fatigue YBTs were completed immediately following the test, and at 10 and 20 minutes.Outcome measures: Normalised YBT reach distances, and IMU derived RMS acceleration, velocity and angular velocity. Main results: Prior to the fatiguing intervention, participants demonstrated excellent stability/reliability for all reach directions (Intra-class correlation coefficient 0.872-0.994). Significantly lower reach distances (P<0.05) were observed immediately post-fatigue for the postero-medial and postero-lateral, but not anterior reach direction. Observed deficits returned to pre-fatigue levels by 10 minutes. However, IMU derived measures of postural stability remained significantly reduced (P<0.05) for up to 20 minute post-fatigue. Conclusions: These results demonstrate the ability of both traditional YBT reach distances and inertial sensor data to detect centrally driven postural stability deficits. However, the inertial sensor provided a greater degree of granularity in characterising the nature of these postural stability deficits. This suggests that addition of IMUs to clinical balance measurement tests/protocols may better detect deficits associated with concussion.
Funding Details: Science Foundation Ireland
Type of material: Journal Article
Publisher: BMJ
Journal: British Journal of Sports Medicine
Volume: 51
Issue: 11
Start page: A54
End page: A55
Copyright (published version): 2017 BMJ Publishing Group Limited
Keywords: Inertial sensor dataPostural stability deficitsClinical balance assessmentPost-concussion protocolsY-Balance testsWingate anaerobic fatiguing test
DOI: 10.1136/bjsports-2016-097270.142
Other versions: 10.5220/0006079400150024
Language: en
Status of Item: Peer reviewed
Appears in Collections:Insight Research Collection

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