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Concurrent validity of a novel wireless inertial measurement system for assessing trunk impairment in people with stroke

Concurrent validity of a novel wireless inertial measurement system for assessing trunk impairment in people with stroke
Concurrent validity of a novel wireless inertial measurement system for assessing trunk impairment in people with stroke

Background: The Trunk Impairment Scale (TIS) is recommended for clinical research use to assess trunk impairment post-stroke. However, it is observer-dependent and neglects the quality of trunk movements. This study proposes an instrumented TIS (iTIS) using the Valedo system, comprising portable inertial sensors, as an objective measure of trunk impairment post-stroke. Objective: This study investigates the concurrent and discriminant ability of the iTIS in chronic stroke participants. Method: Forty participants (20 with chronic stroke, 20 healthy, age-matched) were assessed using the TIS and iTIS simultaneously. A Spearman rank correlation coefficient was used to examine concurrent validity. A ROC curve was used to determine whether the iTIS could distinguish between stroke participants with and without trunk impairment. Results: A moderate relationship was found between the observed iTIS parameters and the clinical scores, supporting the concurrent validity of the iTIS. The small sample size meant definitive conclusions could not be drawn about the parameter differences between stroke groups (participants scoring zero and one on the clinical TIS) and the parameter cut-off points. Conclusion: The iTIS can detect small changes in trunk ROM that cannot be observed clinically. The iTIS has important implications for objective assessments of trunk impairment in clinical practice.

Inertial sensor, Instrumented trunk impairment scale, Objective assessment, Stroke, Trunk impairment scale, Validity
1424-8220
Alhwoaimel, Norah
2bbf3fd2-1b5b-4f87-b357-47a182893249
Warner, Martin
f4dce73d-fb87-4f71-a3f0-078123aa040c
Hughes, Ann-Marie
11239f51-de47-4445-9a0d-5b82ddc11dea
Ferrari, Federico
cc1b45ac-e78d-449a-9dbb-e80d746eaafa
Burridge, Jane
0110e9ea-0884-4982-a003-cb6307f38f64
Wee, Seng Kwee
876fdc2f-4b84-4aba-bf50-f3417ae532c2
Verheyden, Geert
65d3e411-9892-4f78-8a40-1131b2798abc
Turk, Ruth
9bb21965-6f9f-4c9c-8505-94df8e168f52
Alhwoaimel, Norah
2bbf3fd2-1b5b-4f87-b357-47a182893249
Warner, Martin
f4dce73d-fb87-4f71-a3f0-078123aa040c
Hughes, Ann-Marie
11239f51-de47-4445-9a0d-5b82ddc11dea
Ferrari, Federico
cc1b45ac-e78d-449a-9dbb-e80d746eaafa
Burridge, Jane
0110e9ea-0884-4982-a003-cb6307f38f64
Wee, Seng Kwee
876fdc2f-4b84-4aba-bf50-f3417ae532c2
Verheyden, Geert
65d3e411-9892-4f78-8a40-1131b2798abc
Turk, Ruth
9bb21965-6f9f-4c9c-8505-94df8e168f52

Alhwoaimel, Norah, Warner, Martin, Hughes, Ann-Marie, Ferrari, Federico, Burridge, Jane, Wee, Seng Kwee, Verheyden, Geert and Turk, Ruth (2020) Concurrent validity of a novel wireless inertial measurement system for assessing trunk impairment in people with stroke. Sensors, 20 (6), [1699]. (doi:10.3390/s20061699).

Record type: Article

Abstract

Background: The Trunk Impairment Scale (TIS) is recommended for clinical research use to assess trunk impairment post-stroke. However, it is observer-dependent and neglects the quality of trunk movements. This study proposes an instrumented TIS (iTIS) using the Valedo system, comprising portable inertial sensors, as an objective measure of trunk impairment post-stroke. Objective: This study investigates the concurrent and discriminant ability of the iTIS in chronic stroke participants. Method: Forty participants (20 with chronic stroke, 20 healthy, age-matched) were assessed using the TIS and iTIS simultaneously. A Spearman rank correlation coefficient was used to examine concurrent validity. A ROC curve was used to determine whether the iTIS could distinguish between stroke participants with and without trunk impairment. Results: A moderate relationship was found between the observed iTIS parameters and the clinical scores, supporting the concurrent validity of the iTIS. The small sample size meant definitive conclusions could not be drawn about the parameter differences between stroke groups (participants scoring zero and one on the clinical TIS) and the parameter cut-off points. Conclusion: The iTIS can detect small changes in trunk ROM that cannot be observed clinically. The iTIS has important implications for objective assessments of trunk impairment in clinical practice.

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More information

Accepted/In Press date: 16 March 2020
Published date: 18 March 2020
Keywords: Inertial sensor, Instrumented trunk impairment scale, Objective assessment, Stroke, Trunk impairment scale, Validity

Identifiers

Local EPrints ID: 438939
URI: http://eprints.soton.ac.uk/id/eprint/438939
ISSN: 1424-8220
PURE UUID: b93dd804-ab3f-4bc2-b42d-e57dbbccd1d5
ORCID for Martin Warner: ORCID iD orcid.org/0000-0002-1483-0561
ORCID for Ann-Marie Hughes: ORCID iD orcid.org/0000-0002-3958-8206
ORCID for Jane Burridge: ORCID iD orcid.org/0000-0003-3497-6725
ORCID for Ruth Turk: ORCID iD orcid.org/0000-0001-6332-5353

Catalogue record

Date deposited: 27 Mar 2020 17:30
Last modified: 18 Feb 2021 17:06

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