Structural changes in male trapezius muscle with work-related myalgia

  title={Structural changes in male trapezius muscle with work-related myalgia},
  author={Fawzi Kadi and Goran H{\"a}gg and R. H{\aa}kansson and Staffan Holmner and Gillian Butler-Browne and L. -E. Thornell},
  journal={Acta Neuropathologica},
Muscular changes in male forest machine operators with work-related neck and shoulder myalgia were studied. Enzyme cyto- and immunohistochemical analysis was carried on muscle biopsies obtained from ten myalgic subjects (M), nine non-myalgic selected in the same work place (NM) and six healthy young men (C). The M group displayed a significant increase in type IIA fibres in comparison to the C group. This hypertrophy was accompanied by a parallel increase in the capillary bed. Both the M and NM… CONTINUE READING
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