Purpose

This study investigates the effects of the usage of a novel camera system compared to a conventional lens system for manual precision tasks. Utilizing the novel camera system aims to improve neck posture, reduce neck muscle tension and thereby minimize the risk of neck pain.

Methods

Camera and lens systems were compared by assessing the craniovertebral angle (CVA), electromyographic activity of the M.trapezius and perceived exertion. 16 healthy participants (n = 8 female, 24 ± 2 years; n = 8 male, 30 ± 5 years) performed manual precision tasks in a cross-over design using both systems in sitting and standing positions.

Results

Analyses showed that using the camera system improved the CVA in sitting [28.4° (22.8°–33.9°) to 42.5° (38.9°–46.1°); p < 0.01] and decreased the M.trapezius activity in standing [13.1% (7.7%–18.6%) to 8.65% (5.49%–11.81%)]. Additionally, overall and neck specific perceived exertion decreased when using the camera system in standing.

Conclusions

The camera system may prevent neck pain in workers performing manual precision tasks in sitting and standing postures.

中文翻译：

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使用基于摄像头的新型工作站进行手动精密检查任务时，改善颈部姿势并减少颈部肌肉活动。

目的

本研究调查了使用新型相机系统与传统镜头系统相比对手动精确任务的影响。利用新型摄像系统旨在改善颈部姿势，减少颈部肌肉紧张，从而最大限度地减少颈部疼痛的风险。

方法

通过评估颅椎角 (CVA)、斜方肌的肌电活动和感知的用力来比较相机和镜头系统。16 名健康参与者（n = 8 名女性，24 ± 2 岁；n = 8 名男性，30 ± 5 岁）在交叉设计中使用坐姿和站立姿势的两种系统执行手动精确任务。

结果

分析表明，使用摄像头系统提高了坐姿的 CVA [28.4° (22.8°–33.9°) 到 42.5° (38.9°–46.1°)；p  < 0.01] 并降低站立时斜方肌的活动 [13.1% (7.7%–18.6%) 至 8.65% (5.49%–11.81%)]。此外，当站立使用相机系统时，整体和颈部特定的感知用力降低。

结论

摄像系统可以防止工人以坐姿和站立姿势执行手动精确任务时的颈部疼痛。