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Energetic costs of incidental visual coupling during treadmill running.

Eaves, Daniel and Hodges, Nicola and Williams, A. Mark (2008) Energetic costs of incidental visual coupling during treadmill running. Medicine & Science in Sports & Exercise, 40 (8). pp. 1506-1514.

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Abstract

Purpose: To determine the role of visual-spatial information in stabilizing movement during treadmill locomotion. Methods: Physiological, biomechanical, and psychological indices of coordination stability were recorded while participants were visually coupled with a whole-body image of themselves during treadmill locomotion. Ten participants ran on a treadmill under three visual conditions: two dynamic images (symmetrical, mirror image; asymmetrical, reversed mirror image) and one static. Performance was examined at two speeds. Results: Participants ran more economically (mL·kg·min -1) when they were visually coupled with a symmetrical rather than with an asymmetrical or static image. An asymmetrical coupling resulted in increased variability in footfall position at the faster speed, in comparison to the symmetrical and static conditions. However, at slower speeds, footfall variability and frequency were higher under both dynamic visual conditions in comparison to the static control. Changes in metabolic economy (mL·kg·min-1) were only partially mediated by movement kinematics. Conclusion: Visual information influences treadmill locomotion and associated measures of stability even when there is no intention to coordinate with external stimuli.

Item Type: Article
Journal or Publication Title: Medicine & Science in Sports & Exercise
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Departments: Faculty of Science and Technology > Psychology
ID Code: 54944
Deposited By: ep_importer_pure
Deposited On: 07 Jun 2012 15:24
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 23:38
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/54944

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