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| Research article summary (published 29 Jun 2003): |
Direction of foot force for pushes against a fixed pedal: role of effort level.
Full Abstract
Control of the force exerted by the foot on the ground is critical to human locomotion. During running on a treadmill and pushing against a fixed pedal, humans increased foot force in a linear manner in sagittal plane force space. However, for pushes against a moving pedal, force output was linear for some participants but slightly curved for others. A primary difference between the static and dynamic pedaling studies was that the dynamic study required participants to push with varying peak effort levels, whereas a constant peak effort level was used for the fixed pedal pushes. The present study evaluated the possibility that force direction varied with level of effort. Seated humans pushed against a fixed pedal to a series of force magnitude targets. The force direction varied systematically with effort level consistent with the force path curvature observed for dynamic pedaling.
Author information
Author/s: Gruben, Kreg G (KG); Rogers, Lynn M (LM); Schmidt, Matthew W (MW);
Affiliation: Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706-1189, USA.
Journal and publication information
Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.
Journal: Motor control (Motor Control), published in United States. (Language: eng)
Reference: 2003-Jul; vol 7 (issue 3) : pp 229-41
Dates: Created 2003/08/01; Completed 2003/08/22; Revised 2008/11/21;
PMID: 12893955, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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