Title

Determination of heel strike and toe-off in the running stride using an accelerometer: Application to field-based gait studies

Document Type

Journal Article

Publisher

University of Ottawa

School

School of Exercise, Biomedical and Health Science

RAS ID

3286

Comments

Heiden,T., Burnett, A.F. (2004). Determination of heel strike and toe-off in the running stride using an accelerometer: Application to field-based gait studies. In the Proceedings of the XXIInd International Symposium of Biomechanics in Sports. (pp. 98 - 101). Ottowa, Canada. Available here

Abstract

This study examined the validity of using an accelerometer to determine heel strike and toe-off during the running stride for use in field-based gait studies. Synchronised ground reaction force and accelerometer (±1.25Gz and ±12Gz) data were collected from six males running at constant speed across a force plate. Two attachments sites for the accelerometer were examined, the hip and the ankle. Attachment of the accelerometer to the ankle provided a highly distinguishable and repeatable pattem. The identification of heel strike and toe-off via the accelerometer signal was determined by calculation of the lag time from the acceleration peak after ground impact. The lag times were calculated to be 65±5msec for heel strike and 15±2msec for toe-off. The results of this stUdy provide evidence that heel strike and toe off can be accurately determined using an accelerometer.

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