An in vitro study of individual ankle muscle actions on the center of pressure

Kyu Jung Kim; Eiichi Uchiyama; Harold B. Kitaoka; Kai Nan An

doi:10.1016/S0966-6362(02)00063-2

An in vitro study of individual ankle muscle actions on the center of pressure

Kyu Jung Kim, Eiichi Uchiyama, Harold B. Kitaoka, Kai Nan An

Medical Device Innovation Center

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

The objective of this study was to correlate the effects of muscle force on the movement of the center of pressure (COP) for increased clinical utility of the COP measurement. Five fresh frozen cadaveric specimens were used to apply a 49 N sinusoidal muscle force to isolated or grouped extrinsic ankle muscles, and a constant ankle joint reaction force at different tibial positions. The muscle force and the vertical ground reaction force (GRF) play the role of a mechanical lever system so that the differential COP movement can be interpreted as a moment arm for the vertical GRF.

Original language	English
Pages (from-to)	125-131
Number of pages	7
Journal	Gait and Posture
Volume	17
Issue number	2
DOIs	https://doi.org/10.1016/S0966-6362(02)00063-2
Publication status	Published - 2003 Apr

All Science Journal Classification (ASJC) codes

Biophysics
Orthopedics and Sports Medicine
Rehabilitation

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10.1016/S0966-6362(02)00063-2

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abstract = "The objective of this study was to correlate the effects of muscle force on the movement of the center of pressure (COP) for increased clinical utility of the COP measurement. Five fresh frozen cadaveric specimens were used to apply a 49 N sinusoidal muscle force to isolated or grouped extrinsic ankle muscles, and a constant ankle joint reaction force at different tibial positions. The muscle force and the vertical ground reaction force (GRF) play the role of a mechanical lever system so that the differential COP movement can be interpreted as a moment arm for the vertical GRF.",

author = "Kim, {Kyu Jung} and Eiichi Uchiyama and Kitaoka, {Harold B.} and An, {Kai Nan}",

note = "Funding Information: We gratefully acknowledge the support of National Institutes of Health Grants R01 AR 42315 and TG HD 07447 in this research.",

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AU - Kim, Kyu Jung

AU - Uchiyama, Eiichi

AU - Kitaoka, Harold B.

AU - An, Kai Nan

N1 - Funding Information: We gratefully acknowledge the support of National Institutes of Health Grants R01 AR 42315 and TG HD 07447 in this research.

PY - 2003/4

Y1 - 2003/4

N2 - The objective of this study was to correlate the effects of muscle force on the movement of the center of pressure (COP) for increased clinical utility of the COP measurement. Five fresh frozen cadaveric specimens were used to apply a 49 N sinusoidal muscle force to isolated or grouped extrinsic ankle muscles, and a constant ankle joint reaction force at different tibial positions. The muscle force and the vertical ground reaction force (GRF) play the role of a mechanical lever system so that the differential COP movement can be interpreted as a moment arm for the vertical GRF.

AB - The objective of this study was to correlate the effects of muscle force on the movement of the center of pressure (COP) for increased clinical utility of the COP measurement. Five fresh frozen cadaveric specimens were used to apply a 49 N sinusoidal muscle force to isolated or grouped extrinsic ankle muscles, and a constant ankle joint reaction force at different tibial positions. The muscle force and the vertical ground reaction force (GRF) play the role of a mechanical lever system so that the differential COP movement can be interpreted as a moment arm for the vertical GRF.

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An in vitro study of individual ankle muscle actions on the center of pressure

Abstract

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