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Acute electromyographic responses of deep thoracic paraspinal muscles to spinal manual therapy interventions. An experimental, randomized cross-over study.
Fryer, Gary; Bird, Michael; Robbins, Barry; Johnson, Jane C.
Afiliación
  • Fryer G; A.T. Still Research Institute, A.T. Still University, Kirksville, MO, USA; College of Health and Biomedicine, Victoria University, Melbourne, Australia. Electronic address: gary.fryer@vu.edu.au.
  • Bird M; Department of Health and Exercise Sciences, Truman State University, Kirksville, MO, USA. Electronic address: mbird@truman.edu.
  • Robbins B; Department of Neurobehavioral Sciences, Kirksville College of Osteopathic Medicine, A.T. Still University, Kirksville, MO, USA. Electronic address: grobbins@atsu.edu.
  • Johnson JC; A.T. Still Research Institute, A.T. Still University, Kirksville, MO, USA. Electronic address: jjohnson@atsu.edu.
J Bodyw Mov Ther ; 21(3): 495-502, 2017 Jul.
Article en En | MEDLINE | ID: mdl-28750955
This single group, randomized, cross-over study explored whether manual therapy alters motor tone of deep thoracic back muscles by examining resting electromyographic activity (EMG) after 2 types of manual therapy and a sham control intervention. Twenty-two participants with thoracic spinal pain (15 females, 7 males, mean age 28.1 ± 6.4 years) had dual fine-wire, intramuscular electrodes inserted into deep transversospinalis muscles at a thoracic level where tissues appeared abnormal to palpation (AbP) and at 2 sites above and below normal and non-tender to palpation (NT). A surface electrode was on the contralateral paraspinal mass at the level of AbP. EMG signals were recorded for resting prone, two 3-s free neck extension efforts, two 3-s resisted maximal voluntary isometric contractions (MVIC), and resting prone before the intervention. Randomized spinal manipulation, counterstrain, or sham manipulation was delivered and EMG re-measured. Participants returned 1 and 2 weeks later for the remaining 2 treatments. Reductions in resting EMG followed counterstrain in AbP (median decrease 3.3%, P = 0.01) and NT sites (median decrease 1.0%, P = 0.05) and for the surface electrode site (median decrease 2.0%, P = 0.009). Reduction in EMG following counterstrain during free neck extension was found for the surface electrode site (median decrease 2.7%, P < 0.01). Spinal manipulation produced no change in EMG, whereas counterstrain technique produced small significant reductions in paraspinal muscle activity during prone resting and free neck extension conditions. The clinical relevance of these changes is unclear.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Dolor de la Región Lumbar / Manipulación Espinal / Músculos Paraespinales Tipo de estudio: Clinical_trials / Guideline Límite: Adult / Female / Humans / Male Idioma: En Revista: J Bodyw Mov Ther Asunto de la revista: MEDICINA FISICA / TERAPEUTICA Año: 2017 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Dolor de la Región Lumbar / Manipulación Espinal / Músculos Paraespinales Tipo de estudio: Clinical_trials / Guideline Límite: Adult / Female / Humans / Male Idioma: En Revista: J Bodyw Mov Ther Asunto de la revista: MEDICINA FISICA / TERAPEUTICA Año: 2017 Tipo del documento: Article Pais de publicación: Estados Unidos