Changes of postural control and muscle activation pattern in response to external perturbations after neck flexor fatigue in young subjects with and without chronic neck pain

Gait & Posture
Chih-Hsiu ChengHsin-Yi Kathy Cheng

Abstract

Previous studies have identified sensorimotor disturbances and greater fatigability of neck muscles in patients with neck pain. The purpose of this study was to investigate the effect of neck pain and neck flexor fatigue on standing balance following postural perturbations. Twenty patients with chronic neck pain (CNP) (24.7±3.6 year-old) and 20 age-matched asymptomatic subjects (22.1±2.2 year-old) were recruited. Subjects stood barefoot on a force plate and experienced backward perturbations before and after neck flexor fatigue. Center of pressure, electromyography of cervical and lumbar muscles, and head/trunk accelerations were recorded. Two-way ANOVA (pain×fatigue) was used for statistical analysis. CNP group showed larger body sway during quiet standing but not during perturbed standing compared with asymptomatic adults. In both groups, neck flexor fatigue resulted in greater body sway during the quiet standing but smaller body sway during perturbed standing, increased neck muscle activations and decreased lumbar muscle activations, as well as increased time to maximal head acceleration. Disturbed balance control was observed in CNP patients during the quiet standing. However, a rigid strategy was used to minimize the postu...Continue Reading

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Citations

Sep 28, 2017·Journal of Back and Musculoskeletal Rehabilitation·Almir Vieira Dibai-FilhoElaine Caldeira de Oliveira Guirro
Feb 27, 2018·Pain Medicine : the Official Journal of the American Academy of Pain Medicine·Rogerio P HirataThomas Graven-Nielsen
Feb 12, 2020·Physiotherapy Theory and Practice·Alberto Fidalgo-HerreraMaria Carratalá-Tejada
May 11, 2018·European Journal of Physical and Rehabilitation Medicine·Konstantin BeinertJörg Trojan
Oct 28, 2019·Journal of Physical Therapy Science·Yoshihito SekiguchiKazuo Kurosawa
Sep 19, 2019·Journal of Physical Therapy Science·Yoshihito SekiguchiKazuo Kurosawa
May 26, 2018·Scandinavian Journal of Pain·Gabriela AmaralAnabela G Silva
Dec 30, 2020·Human Movement Science·A Fidalgo-HerreraM Carratalá-Tejada

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