Table 2

sEMG calibration contractions
FM patients Controls pa
Force (N)
Shoulder abduction 101 (37), 41-206 116 (21), 61-148 0.08
Elbow flexion 110 (29), 39-167 136 (27), 91-201 0.002
sEMGmax (μV)
Clavicular trapezius 337 (189), 94-711 534 (203), 208-879 0.002
Acromial trapezius 276 (163), 87-615 501 (298), 119-1257 0.003
Middle deltoid 217 (96), 93-358 315 (105), 133-549 0.01
Biceps brachii 177 (81), 54-365 259 (131), 67-564 0.01

Maximal force and sEMGmax during isometric maximal voluntary contractions (i.e., shoulder abduction and elbow flexion) for fibromyalgia (FM) patients and healthy controls.

Values are mean (SD), range.

aIndependent samples t-test.

Westgaard et al.

Westgaard et al. BMC Musculoskeletal Disorders 2013 14:97   doi:10.1186/1471-2474-14-97

Open Data