title: Onset and maximum values of electromyographic amplitude during prone hip extension after neurodynamic technique in patients with lumbosciatic pain: A pilot study.
abstract: OBJECTIVE
  The mechanisms underlying the effects of neurodynamic techniques are still unknown. Therefore, the aim of this study was to provide a starting point for future research on explaining why neurodynamic techniques affect muscular activities in patients with sciatic pain.
  
  
  METHODS
  A double-blind trial was conducted in 12 patients with lumbosciatica. Surface electromyography activity was assessed for different muscles during prone hip extension. Pre- and post-intervention values for muscle activity onset and maximal amplitude signals were determined.
  
  
  RESULTS
  There was a significant reduction in the surface electromyography activity of maximal amplitude in the erector spinae and contralateral erector spinae (p < 0.05). Additionally, gluteus maximus (p < 0.05) activity onset was delayed post-intervention.
  
  
  CONCLUSIONS
  Self-neurodynamic sliding techniques modify muscular activity and onset during prone hip extension, possibly reducing unnecessary adaptations for protecting injured components. Future work will analyze the effects of self-neurodynamic sliding techniques during other physical tasks.
authors.affiliation: Department of Physical Therapy, Faculty of Medicine, University of Chile, Santiago, Chile; Laboratory of Biomechanics, San José Hospital, Santiago, Chile.
authors.forename: Giselle
authors.initials: G
authors.lastname: Horment-Lara
authors.affiliation: Department of Physical Therapy, Faculty of Medicine, University of Chile, Santiago, Chile; Laboratory of Biomechanics, San José Hospital, Santiago, Chile. Electronic address: carloscruz@med.uchile.cl.
authors.forename: Carlos
authors.initials: C
authors.lastname: Cruz-Montecinos
authors.affiliation: Department of Physical Therapy, Faculty of Medicine, University of Chile, Santiago, Chile; Laboratory of Biomechanics, San José Hospital, Santiago, Chile.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Núñez-Cortés
authors.affiliation: Department of Physical Therapy, Faculty of Medicine, University of Chile, Santiago, Chile.
authors.forename: Pablo
authors.initials: P
authors.lastname: Letelier-Horta
authors.affiliation: School of Kinesiology, Faculty of Medicine, Mayor University, Santiago, Chile.
authors.forename: Luis
authors.initials: L
authors.lastname: Henriquez-Fuentes
mesh_terms: D000328:Adult; D004311:Double-Blind Method; D004576:Electromyography; D005260:Female; D006621:Hip Joint / Q000503:physiopathology; D006801:Humans; D017116:Low Back Pain / Q000503:physiopathology* / Q000534:rehabilitation*; D008297:Male; D008875:Middle Aged; D009119:Muscle Contraction / Q000502:physiology; D018482:Muscle, Skeletal / Q000502:physiology; D026741:Physical Therapy Modalities; D010865:Pilot Projects; D016684:Prone Position / Q000502:physiology; D012585:Sciatica / Q000503:physiopathology* / Q000534:rehabilitation*
keywords: Electromyography; Lower back pain; Neurodynamic techniques; Neuropathic pain; Prone hip extension; Sciatica