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International Journal of
Foot and Ankle ISSN: 2643-3885

Citation

Otake Y, Yozu A, Fukui T, Sumitani M, Haga N (2018) Relationship between Toe Flexion Movement and Center of Pressure Position. Int J Foot Ankle 2:015. doi.org/10.23937/ijfa-2017/1710015

Copyright

© 2018 Otake Y, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

ORIGINAL ARTICLE | OPEN ACCESS DOI: 10.23937/ijfa-2017/1710015

Relationship between Toe Flexion Movement and Center of Pressure Position

Y Otake1,2*, A Yozu1, 3, T Fukui4, M Sumitani5 and N Haga1

1Department of Rehabilitation Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan

2Sports Management Center, Bunkyo Gakuin University, Bunkyo-ku, Tokyo, Japan

3Department of Cognitive and Locomotor Sciences in the Super-aged Society, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan

4Physical Therapy Department, Faculty of Health Science Technology, Bunkyo Gakuin University, Tokyo, Japan

5Department of Anesthesiology and Pain Relief Center, The University of Tokyo Hospital, Tokyo, Japan

Abstract

In humans, the toes are important for stability while standing. We aim to elucidate the role of the toes in posture control by examining the relationship between the action of the flexor muscles and the center of pressure (COP) positions in the standing posture.

The subjects were 16 healthy young adults who were free of musculoskeletal and neurological disorders. We measured the toe plantarflexion movements, COP positions, and floor reaction force components in the standing and forward loading postures.

In subjects with more anteriorly-located COP positions during the forward body shift, the toe flexion angle was greater. Moreover, as the COP position in the static standing posture was more anteriorly located, the subjects were more likely to flex their toes with the interphalangeal joint extended.

Our findings suggest that the ability to flex the toes with extended interphalangeal joints affects stability in the static standing position. In addition, the toe flexion angles and force of pushing against the floor affect dynamic balance.