Estimation of the kinetic-optimized stimulus intensity envelope for drop foot gait rehabilitation.
J Med Eng Technol
; 36(4): 210-6, 2012 May.
Article
en En
| MEDLINE
| ID: mdl-22428753
ABSTRACT
The purpose of present study is to estimate the optimal stimulus intensity envelope for drop foot rehabilitation based on a kinetic perspective. The voluntary and electric-stimulated elicited dorsiflexion torque responses of 11 healthy subjects were measured. During dorsiflexion, we recorded the tibialis anterior (TA) electromyography (EMG) or the stimulation intensity at four angles of the ankle joint. From these measurements, we derived two approximate equations that estimate dorsiflexion produced by either voluntary contraction or by electrical stimulation using a sigmoid function and a stepwise-regression analysis. We then tested the predictive capability of the model using Pearson correlation. Both equations indicated high correlation coefficients. Finally, we derived a relation between the TA EMG amplitude and stimulation intensity. From the obtained equation, we determined the optimal stimulus amplitude. We assume that the derived stimulus intensity envelope, calculated from EMG amplitude and angle of ankle joint, satisfies kinetic demand.
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Terapia por Estimulación Eléctrica
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Músculo Esquelético
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Trastornos Neurológicos de la Marcha
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Marcha
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Articulación del Tobillo
Tipo de estudio:
Prognostic_studies
Límite:
Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
J Med Eng Technol
Año:
2012
Tipo del documento:
Article
País de afiliación:
Japón