“…Then, the muscle activity was unchanged in the pain-afflicted workers, but was significantly reduced in pain-free workers (Holte & Westgaard, 2002). This apparent inability to relax the trapezius muscle during leisure time among pain-afflicted workers was also found during sleep in a separate analysis (Mork & Westgaard, 2004). Moreover, a study concerning myofeedback training in individuals with work-related myalgia in the neck and shoulders showed that a reduction in pain was not related to a decreased muscle activity level, however, it was related to an increased ability to relax the muscles (VollenbroekHutten, Hermans, Voerman, Sandsjö & Kadefors, 2006).…”