Experimental neck muscle pain impairs standing balance in humans |
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Authors: | Nicolas Vuillerme and Nicolas Pinsault |
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Institution: | (1) Faculté de Médecine, Laboratoire TIMC-IMAG, UMR UJF CNRS 5525, 38706 La Tronche Cédex, France |
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Abstract: | Impaired postural control has been reported in patients with chronic neck pain of both traumatic and non-traumatic etiologies,
but whether painful stimulation of neck muscle per se can affect balance control during quiet standing in humans remains unclear.
The purpose of the present experiment was thus to investigate the effect of experimental neck muscle pain on standing balance
in young healthy adults. To achieve this goal, 16 male university students were asked to stand upright as still as possible
on a force platform with their eyes closed in two conditions of No pain and Pain of the neck muscles elicited by experimental
painful electrical stimulation. Postural control and postural performance were assessed by the displacements of the center
of foot pressure (CoP) and of the center of mass (CoM), respectively. The results showed increased CoP and CoM displacements
variance, range, mean velocity, and mean and median frequencies in the Pain relative to the No pain condition. The present
findings emphasize the destabilizing effect of experimental neck muscle pain per se, and more largely stress the importance
of intact neck neuromuscular function on standing balance. |
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Keywords: | Balance Neck muscle pain Center of foot pressure (CoP) Center of mass (CoM) Human |
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