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Within trial validation and reliability of a single tri-axial accelerometer for gait assessment

Lookup NU author(s): Dr Alan Godfrey, Dr Silvia Del DinORCiD, Gillian Barry, Professor John Mathers, Professor Lynn RochesterORCiD


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Gait is a sensitive biomarker of decline in both cognitive and physical function. Therefore, the collection of gait data is an important feature of clinical assessments. Accelerometer-based body worn sensors are quickly becoming the preferred tool for assessing gait because they are small, useable in a wide variety of settings, offer more continuous spatio-temporal analysis and are inexpensive when compared with traditional gait assessment methodologies. The purpose of this study was to determine the validity and within test reliability of a low cost body worn movement sensor with associated algorithms to assess gait in a large group of older and younger healthy adults. We collected gait data over intermittent walks on an instrumented walkway for a within trial validation and also used the same accelerometer derived gait data for a within test reliability analysis. ICCs for validation and reliability were >0.756 and >0.965, respectively.

Publication metadata

Author(s): Godfrey A, Del Din S, Barry G, Mathers JC, Rochester L

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

Year of Conference: 2014

Pages: 5892-5895

Acceptance date: 01/01/1900

ISSN: 1094-687X

Publisher: IEEE


DOI: 10.1109/EMBC.2014.6944969