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The nature and extent of upper limb associated reactions during walking in people with acquired brain injury

journal contribution
posted on 12.01.2021, 00:39 by Michelle B Kahn, Ross A Clark, Gavin Williams, Kelly J Bower, Megan Banky, John Olver, Benjamin Mentiplay
© 2019 The Author(s). Background: Upper limb associated reactions (ARs) are common in people with acquired brain injury (ABI). Despite this, there is no gold-standard outcome measure and no kinematic description of this movement disorder. The aim of this study was to determine the upper limb kinematic variables most frequently affected by ARs in people with ABI compared with a healthy cohort at matched walking speed intention. Methods: A convenience sample of 36 healthy control adults (HCs) and 42 people with ABI who had upper limb ARs during walking were recruited and underwent assessment of their self-selected walking speed using the criterion-reference three dimensional motion analysis (3DMA) at Epworth Hospital, Melbourne. Shoulder flexion, abduction and rotation, elbow flexion, forearm rotation and wrist flexion were assessed. The mean angle, standard deviation (SD), peak joint angles and total joint angle range of motion (ROM) were calculated for each axis across the gait cycle. On a group level, ANCOVA was used to assess the between-group differences for each upper limb kinematic outcome variable. To quantify abnormality prevalence on an individual participant level, the percentage of ABI participants that were outside of the 95% confidence interval of the HC sample for each variable were calculated. Results: There were significant between-group differences for all elbow and shoulder abduction outcome variables (p < 0.01), most shoulder flexion variables (except for shoulder extension peak), forearm rotation SD and ROM and for wrist flexion ROM. Elbow flexion and shoulder abduction were the axes most frequently affected by ARs. Despite the elbow being the most prevalently affected (38/42, 90%), a large proportion of participants had abnormality, defined as ±1.96 SD of the HC mean, present at the shoulder (32/42, 76%), forearm (20/42, 48%) and wrist joints (10/42, 24%). Conclusion: This study provides valuable information on ARs, and highlights the need for clinical assessment of ARs to include all of the major joints of the upper limb. This may inform the development of a criterion-reference outcome measure or classification system specific to ARs.

Funding

This research was supported by grants awarded to Michelle Kahn from the Royal Automobile Club of Victoria (RACV), Epworth Research Institute (ERI) and Physiotherapy Research Fund (PRF). The funds awarded from RACV and ERI were utilised as part of a larger scale research program investigating various outcome measures for gait, spasticity and associated reactions in people with acquired brain injury. Dr. Ross Clark is supported by a National Health and Medical Research Council R.D. Wright Biomedical Fellowship (Number: 1090415).

History

Publication Date

01/01/2019

Journal

Journal of NeuroEngineering and Rehabilitation

Volume

16

Issue

1

Article Number

160

Pagination

10p.

Publisher

Springer Nature

ISSN

1743-0003

Rights Statement

The Author reserves all moral rights over the deposited text and must be credited if any re-use occurs. Documents deposited in OPAL are the Open Access versions of outputs published elsewhere. Changes resulting from the publishing process may therefore not be reflected in this document. The final published version may be obtained via the publisher’s DOI. Please note that additional copyright and access restrictions may apply to the published version.

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