Visual and psychological stress during computer work in healthy, young females-physiological responses.
Visual and psychological stress during computer work in healthy, young females-physiological responses.
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DOI：
10.1007/s00420-018-1324-5
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发表时间：
2018-10
影响因子：
3
通讯作者：
Thorud HMS
中科院分区：
文献类型：
--
作者：
Mork R;Falkenberg HK;Fostervold KI;Thorud HMS
在计算机工作者中，视觉问题和颈部疼痛非常普遍。这项研究探讨了计算机工作期间的职业模拟压力源（例如眩光和社会心理压力）如何影响视力正常的年轻女性的生理反应。该研究是一项受试者内部实验室实验，采用平衡、重复设计。 43 名女性在不同压力下进行了 4 次 10 分钟的电脑工作：(1) 最小压力； (2)视觉压力(直射眩光)； (3)心理压力； (4)视觉和心理压力相结合。连续记录斜方肌的肌肉活动和肌肉血流量、眼轮匝肌的肌肉血流量、心率、血压、眨眼频率和姿势角度。每次计算机工作结束后，立即测量注视差异，并完成有关感知工作站照明和压力的调查问卷。暴露在直射强光下会导致斜方肌血流量增加、眨眼频率增加以及头部前倾。心理压力导致斜方肌活动短暂增加，姿势更加前倾。向前弯腰看电脑屏幕与更高的生产力（阅读速度）相关，表明注意力集中或压力反应。前屈姿势也与注视差异的变化相关。此外，在计算机工作期间，斜方肌活动和血流量、眼轮匝肌血流量和心率与休息时相比有所增加。研究表明，在计算机工作期间暴露于眩光和心理压力会影响双眼视力正常的年轻健康女性的斜方肌、姿势和眨眼频率，但影响方式不同。因此，在优化计算机工作站时必须考虑视觉和心理因素，以减少可能导致过度眼睛疲劳和肌肉骨骼负荷的生理反应。
Among computer workers, visual complaints, and neck pain are highly prevalent. This study explores how occupational simulated stressors during computer work, like glare and psychosocial stress, affect physiological responses in young females with normal vision. The study was a within-subject laboratory experiment with a counterbalanced, repeated design. Forty-three females performed four 10-min computer-work sessions with different stress exposures: (1) minimal stress; (2) visual stress (direct glare); (3) psychological stress; and (4) combined visual and psychological stress. Muscle activity and muscle blood flow in trapezius, muscle blood flow in orbicularis oculi, heart rate, blood pressure, blink rate and postural angles were continuously recorded. Immediately after each computer-work session, fixation disparity was measured and a questionnaire regarding perceived workstation lighting and stress was completed. Exposure to direct glare resulted in increased trapezius muscle blood flow, increased blink rate, and forward bending of the head. Psychological stress induced a transient increase in trapezius muscle activity and a more forward-bent posture. Bending forward towards the computer screen was correlated with higher productivity (reading speed), indicating a concentration or stress response. Forward bent posture was also associated with changes in fixation disparity. Furthermore, during computer work per se, trapezius muscle activity and blood flow, orbicularis oculi muscle blood flow, and heart rate were increased compared to rest. Exposure to glare and psychological stress during computer work were shown to influence the trapezius muscle, posture, and blink rate in young, healthy females with normal binocular vision, but in different ways. Accordingly, both visual and psychological factors must be taken into account when optimizing computer workstations to reduce physiological responses that may cause excessive eyestrain and musculoskeletal load.
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影响因子：
56.9
作者：
BIZZI, E;KALIL, RE;TAGLIASCO, V
通讯作者：
TAGLIASCO, V
影响因子：
2.4
作者：
AARAS, A;STRANDEN, E
通讯作者：
STRANDEN, E
DOI：
10.1016/s0169-8141(96)00052-2
发表时间：
1997-09-01
影响因子：
3.1
作者：
Aaras, A;Ro, O
通讯作者：
Ro, O
影响因子：
3.4
作者：
Chellappa SL;Lasauskaite R;Cajochen C
通讯作者：
Cajochen C
影响因子：
3.5
作者：
FAUCETT, J;REMPEL, D
通讯作者：
REMPEL, D