Validation of a smartphone-based measurement tool for the quantification of level walking

Furrer, Martina; Bichsel, Lukas; Niederer, Michael; Baur, Heiner; Schmid, Stefan (2015). Validation of a smartphone-based measurement tool for the quantification of level walking Gait & Posture, 42(3), pp. 289-294. Elsevier 10.1016/j.gaitpost.2015.06.003

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Introduction It is important to assess and quantify gait in order to determine the severity of impairments during gait and to evaluate therapeutic interventions. However, laboratory gait assessment is expensive and time consuming and there is a lack of an easily applicable tool for the quantification of gait in clinical practice. The aim of this study was to validate a smartphone-based measurement tool for the quantification of level walking. Methods Vertical center of mass displacement and step duration of 22 healthy young adults were assessed by a smartphone application and a motion capture system. Intra-session reliability was evaluated by repeated-measures ANOVA, intraclass correlation coefficient (ICC), and standard error of measurement. In order to evaluate the concurrent validity of the smartphone application, smartphone- and motion capture-derived values were compared by Pearson correlation coefficient and Bland-Altman limits of agreement. Results Six out of eight variables derived by the smartphone application showed an excellent reliability (ICC ≥ 0.75) and all variables correlated significantly with measurements of the motion capture system with moderate to strong correlations ranging from 0.61 to 0.92. Conclusion The results showed a great potential of the smartphone application to be a user-friendly and valid tool for the assessment of gait in clinical practice. Further research needs to investigate whether the smartphone application is able to detect differences in gait patterns following therapeutic or orthopedic interventions and whether it is valid for the quantification of gait in people with movement disorders.

Item Type:

Journal Article (Original Article)

Division/Institute:

Health Professions

Name:

Furrer, Martina;
Bichsel, Lukas;
Niederer, Michael;
Baur, Heiner0000-0002-4780-225X and
Schmid, Stefan0000-0001-5138-9800

ISSN:

0966-6362

Publisher:

Elsevier

Language:

English

Submitter:

Admin import user

Date Deposited:

29 Oct 2019 11:24

Last Modified:

18 Dec 2020 13:27

Publisher DOI:

10.1016/j.gaitpost.2015.06.003

ARBOR DOI:

10.24451/arbor.5974

URI:

https://arbor.bfh.ch/id/eprint/5974

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