Effects of experimentally induced pain of the plantar soles on centre of foot pressure displacements during unperturbed upright stance |
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Authors: | Pradels Antoine Pradon Didier Vuillerme Nicolas |
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Affiliation: | FRE 3405 AGIM UJF CNRS Laboratory, AFIRM team, Faculty of Medicine, Centre National de la Recherche Scientifique, La Tronche, France. |
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Abstract: | BackgroundAlthough impaired balance control during quiet standing has repeatedly been reported in persons suffering from foot pain, a better understanding of the effect of foot pain on unperturbed postural control is needed in order to propose and implement efficient podiatry treatments/interventions into clinical practice. The present study was hence designed to address this issue.MethodsTen young healthy adults were asked to stand upright, eyes closed, as still as possible in three experimental conditions: (1) a no-pain condition, (2) a condition when a painful stimulation was applied to the plantar surfaces of both feet, and (3) a condition in which painful stimulation was applied to another body part, the palms of both hands. The centre of foot pressure displacements was recorded using a force platform.FindingsFor the same perceived intensity of the pain, the severe painful stimulation applied to the plantar surfaces of both feet increased centre of foot pressure displacements, whereas the severe painful stimulation applied to the palms of both hands did not.InterpretationThese results reveal the deleterious effect of experimentally induced pain on the plantar soles on unperturbed bipedal postural control. At this point, it is conceivable that these effects of experimental pain could generalise to the effects of pain in patients. Accordingly, the present findings suggest that clinical and/or instrumental interventions designed to mitigate pain in patients suffering from plantar foot pain (e.g., podiatry treatments/interventions) could improve postural control. |
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Keywords: | Postural control Centre of foot pressure Experimental pain Sole of the foot |
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