Pain induced by a single simulated office-work session: Time course and association with muscle blood flux and muscle activity
Pain induced by a single simulated office-work session: Time course and association with muscle blood flux and muscle activity
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DOI：
10.1016/j.ejpain.2008.11.003
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发表时间：
2009-09-01
影响因子：
3.6
通讯作者：
Roe, Cecilie
中科院分区：
文献类型：
--
作者：
Strom, Vegard;Knardahl, Stein;Roe, Cecilie
本研究旨在评估高精度需求和时间压力的计算机工作期间疼痛的发展，以及疼痛与肌肉血流量和肌肉活动之间的关联。 28 名健康受试者（范围 22-44 岁）执行了一项为期 90 分钟的标准化任务，即在文字处理器上纠正文本。根据生产力给予金钱奖励，以产生时间压力。在使用计算机之前、期间和之后，通过视觉模拟量表报告疼痛强度、总体紧张度和眼睛疲劳。通过激光多普勒血流计（LDF）记录肌内斜方肌血流量并分析为基线水平的百分比。通过表面肌电图 (EMG) 测量上斜方肌和前臂伸肌的肌肉活动，分析为最大校准收缩的百分比，%EMG(max)。在电脑使用过程中，疼痛、紧张和眼睛疲劳显着增加，疼痛和紧张的时间进程也不同。斜方肌活动侧的 LDF 升高 30 分钟，随后呈下降趋势。不活跃的斜方肌最初有短暂的增加。上斜方肌肌电图低（
The present study aimed to assess the development of pain during computer work with high precision demand and time pressure, and the association between pain and muscle blood fluxes and muscle activity. Twenty-eight healthy subjects (range 22-44 years) performed a 90-min standardized task of correcting a text on a word-processor. Monetary reward was given according to productivity in order to induce time pressure. Pain intensity, general tension, and eye strain were reported on visual analogue scales before, during and after the computer session. Intramuscular trapezius blood fluxes were recorded by laser-Doppler flowmetry (LDF) and analyzed as % of baseline level. Muscle activity was measured from the upper trapezius and forearm extensors by surface electromyography (EMG), analyzed as % of a maximal calibration contraction, %EMG(max). Pain, tension, and eye strain increased considerably during the computer session with different time course for pain and tension. The LDF of the active side of trapezius was elevated for 30 min followed by a failing trend. There was an initial short-lasting increase in the inactive trapezius. The upper trapezius EMG was low (