Back Muscle Activation Patterns in Chronic Low Back Pain During Walking: A “Guarding” Hypothesis

• DOI: 10.1097/ajp.0b013e3181b40eca
• Publication Date: 2009-12-15T08:32:57Z
• Authors: Marije van der Hulst; Miriam M. Vollenb...; Johan S. Rietman; Leendert Schaake; Karin G. Groothui...; Hermanus J. Hermens
• Keywords: STRIDE; Treadmill

To investigate whether patients with chronic low back pain (CLBP) show "guarded" movements during walking. It is hypothesized that guarding will be reflected by increased lumbar muscle activity all periods of stride and secondary, relatively lesser relaxation swing compared double support. Furthermore, it higher levels perceived fear disability are related to less relative relaxation.In a cross-sectional study 63 CLBP 33 healthy controls walked on treadmill at 3.8 km/h. Surface electromyography (sEMG) data the erector spinae were obtained smoothed rectified sEMG (SRE) values calculated per period The ratio SRE in support was used as measure (SRE ratio). In addition, relationship between values, Roland Morris Disability Questionnaire, Tampa Scale for Kinesiophobia analyzed CLBP.Mean significantly than both swing. ratios not different groups. Results showed no influence or movement either ratios.In CLBP, stride, comparable alteration support, suggests difficulties total relaxation. On basis this evaluation, concluded mechanism No found fear, disability, activity.