Mental stress and trapezius muscle activation under psychomotor challenge: a focus on EMG gaps during computer work.
Mental stress and trapezius muscle activation under psychomotor challenge: a focus on EMG gaps during computer work.
复制标题
精神运动挑战下的精神压力和斜方肌激活：关注计算机工作期间的肌电图间隙。
作者：
L. Schleifer;T. Spalding;S. Kerick;J. Cram;R. Ley;B. Hatfield
Momentary reductions in the electrical activity of working muscles (EMG gaps) contribute to the explanation for the relationship between psychosocial stress and musculoskeletal problems in computer work. EMG activity and gaps in the left and right trapezii were monitored in 23 participants under low and high mental workload (LMW and HMW) demands during computer data entry. Increases in EMG activity and decreases in EMG-gap frequencies in both left and right trapezius muscles were greater during HMW than LMW. In addition, heart period and end-tidal CO2 were lower during HMW, whereas self-reported mood states were higher during HMW. The correspondence between lower end-tidal CO2 and lower EMG-gap frequencies suggests that hyperventilation (overbreathing) may mediate trapezius muscle activation. The reduction of EMG gaps suggests that the salutary benefits of momentary rest from musculoskeletal work are diminished during mental stress.
心血管反应性评估：难度选择对实验室任务反应的影响。
DOI：
10.1016/0167-8760(92)90046-e
发表时间：
1992
期刊：
International journal of psychophysiology : official journal of the International Organization of Psychophysiology
影响因子：
--
作者：
Sherwood,A;Davis,MR;Dolan,CA;Light,KC
通讯作者：
Light,KC