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Authors: Karina Lebel 1 ; Patrick Boissy 1 ; Christian Duval 2 ; Mandar Jog 3 ; Mark Speechley 3 ; Anthony Karelis 4 ; Claude Vincent 5 ; James Frank 6 and Roderick Edwards 7

Affiliations: 1 Université de Sherbrooke and Research Center on Aging, Canada ; 2 Université du Québec à Montréal and Centre de Recherche Institut Universitaire de Gériatrie de Montréal, Canada ; 3 University of Western Ontario, Canada ; 4 Université du Québec à Montréal, Canada ; 5 Université Laval, Canada ; 6 University of Windsor, Canada ; 7 University of Victoria, Canada

Keyword(s): Attitude and Heading Reference System, AHRS, 3-D Orientation Tracking, Mobility, Validation, Inertial, Optical Motion Tracking System.

Related Ontology Subjects/Areas/Topics: Biomedical Engineering ; Biomedical Instruments and Devices ; Biomedical Metrology ; Technologies Evaluation

Abstract: Background: Attitude and Heading Reference Systems’ (AHRS) popularity in biomechanics has been growing rapidly over the past few years. However, the limits of operation and performances of such systems for motion capture are highly dependent upon their conditions of use and the environment they operate in. The objectives of this paper are to: (1) propose a methodology for the characterization of the criterion of validity of accuracy of AHRS in a human biomechanical context; and (2) suggest a set of outcome measures to assess the accuracy of AHRS. Methods: The criterion validity of accuracy is established using an optical motion tracking gold standard under standardized human motions. Results: Global assessment of accuracy is derived by comparing the orientation data provided by the AHRS to those given by the gold standard using a coefficient of multiple correlation. Peak values and RMS difference between both sets of orientation data are also analysed to complete the accuracy portrai t. The methodology proposed herein is verified for the knee during regular walk. Conclusion: The proposed methodology and analyses take into consideration the complexities and processes required to assess the accuracy of AHRS in their context of use and provide a standardized approach to report. (More)

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Paper citation in several formats:
Lebel, K.; Boissy, P.; Duval, C.; Jog, M.; Speechley, M.; Karelis, A.; Vincent, C.; Frank, J. and Edwards, R. (2014). Assessing the Validity of Attitude and Heading Reference Systems for Biomechanical Evaluation of Motions - A Methodological Proposal. In Proceedings of the International Conference on Biomedical Electronics and Devices (BIOSTEC 2014) - BIODEVICES; ISBN 978-989-758-013-0; ISSN 2184-4305, SciTePress, pages 230-237. DOI: 10.5220/0004911202300237

@conference{biodevices14,
author={Karina Lebel. and Patrick Boissy. and Christian Duval. and Mandar Jog. and Mark Speechley. and Anthony Karelis. and Claude Vincent. and James Frank. and Roderick Edwards.},
title={Assessing the Validity of Attitude and Heading Reference Systems for Biomechanical Evaluation of Motions - A Methodological Proposal},
booktitle={Proceedings of the International Conference on Biomedical Electronics and Devices (BIOSTEC 2014) - BIODEVICES},
year={2014},
pages={230-237},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004911202300237},
isbn={978-989-758-013-0},
issn={2184-4305},
}

TY - CONF

JO - Proceedings of the International Conference on Biomedical Electronics and Devices (BIOSTEC 2014) - BIODEVICES
TI - Assessing the Validity of Attitude and Heading Reference Systems for Biomechanical Evaluation of Motions - A Methodological Proposal
SN - 978-989-758-013-0
IS - 2184-4305
AU - Lebel, K.
AU - Boissy, P.
AU - Duval, C.
AU - Jog, M.
AU - Speechley, M.
AU - Karelis, A.
AU - Vincent, C.
AU - Frank, J.
AU - Edwards, R.
PY - 2014
SP - 230
EP - 237
DO - 10.5220/0004911202300237
PB - SciTePress