The trapezius muscle uniquely lacks adaptive process in response to a repeated moderate cognitive stressor

The effect of overcommitment and reward on muscle activity, posture, and forces in the arm-wrist-hand region – a field study among computer workers

“…Although the hypothesized pathway of arm-wrist-hand symptom development due to workplace and individual stressors via an increased internal loading received only limited support in this study, more evidence for this pathway appears to exist for neck-shoulder symptoms. In line with other studies (20,33), we found higher trapezius activity for workers with a combination of high overcommitment and low reward and a main effect of overcommitment on median trapezius muscle activity, indicating a higher trapezius activity for those who are overcommitted, as reported by Bruno-Garza and co-workers (Bruno Garza JL, Eijckelhof BHW, Huysmans MA, Catalano PJ, Katz JN, Johnson PW, et al The effect of overcommitment and reward on trapezius muscle activity and shoulder, head, neck, and torso postures during computer use in the field. December 2012, submitted for publication).…”

Impact of early life adversity on EMG stress reactivity of the trapezius muscle

“…It is known that muscle activity increases during stressful situations. [24–28] In particular, trapezius muscle activity can be influenced by stress, [24,27–30] making the trapezius muscle a possible candidate for examining the impact of early life adversity on a physiological stress-related outcome.…”

Autonomic Regulation in Musculoskeletal Pain

“…In a recent study on healthy volunteers, the activity of different muscles was recorded by EMG during repeated exposure t o m e n t a l s t r e s s ( S t r o o p c o l o u r -w o r d interference tests). All muscles showed lower reactivity during the second exposure except the trapezius muscles (Willmann and Bolmont 2012).…”