Relevance of muscular sensitivity, muscular activity, and cognitive variables for pain reduction associated with EMG biofeedback in fibromyalgia.
18 patients suffering from primary fibromyalgia received nine training sessions using EMG biofeedback over a period of four weeks. Pre- and posttreatment measurement of the baseline EMG activity of the trapezius, muscular sensitivity, and cognitive variables (helplessness and belief of control) were taken. Analysis indicated a significant reduction occurred in general intensity of pain and in EMG activity as well as a significant increase in muscular sensitivity. Multiple regression analyses indicated that the increase in muscular sensitivity correlated with the decrease of EMG activity in the trapezius baseline. Self-reported pain reduction was predicted by a change in cognitive variables.
Sarnoch
H
H
Psychologisches Institut, Universität Bonn, Germany. sarnoch@uni-bonn.de
Adler
F
F
Scholz
O B
OB
D000328:Adult; D001676:Biofeedback, Psychology / Q000502:physiology*; D004576:Electromyography; D005260:Female; D005356:Fibromyalgia / Q000503:physiopathology / Q000523:psychology / Q000628:therapy*; D006801:Humans; D007389:Internal-External Control; D008297:Male; D008875:Middle Aged; D009129:Muscle Tonus / Q000502:physiology; D018482:Muscle, Skeletal / Q000294:innervation*; D009619:Nociceptors / Q000503:physiopathology; D017288:Pain Threshold / Q000502:physiology*; D012803:Sick Role