Comparing standing posture and use of a sit-stand stool: Analysis of vascular, muscular and discomfort outcomes during simulated industrial work
Comparing standing posture and use of a sit-stand stool: Analysis of vascular, muscular and discomfort outcomes during simulated industrial work
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DOI：
10.1016/j.ergon.2014.12.009
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发表时间：
2015-02-01
影响因子：
3.1
通讯作者：
Cote, Julie N.
中科院分区：
文献类型：
--
作者：
Antle, David M.;Vezina, Nicole;Cote, Julie N.
坐站凳可用于工业环境，但缺乏定量证据证明其对下肢、背部和/或颈部/肩部的益处。在本文中，我们描述了一项实验，该实验旨在比较和对比以站立或坐站工作姿势进行 34 分钟体力重复性工作期间的姿势以及肌肉和血管结果与时间相关的差异。当参与者完成重复的盒子折叠任务时，我们测量了下肢的血管参数、躯干和颈部/肩部的肌肉参数以及这三个区域的不适感。结果显示，站立时足部血流量 (p = 0.022) 和踝部平均动脉压 (p < 0.001) 更高。站立时左臀中肌和外斜肌的激活程度更高，而坐站工作导致左竖脊肌和外斜肌对之间的共同激活水平更高（p = 0.026）。不同条件下颈部/肩部肌肉活动没有显着差异。报告的躯干和颈部/肩部不适没有显着差异，但站立导致下肢报告的不适程度更高。本实验中使用的坐站姿势似乎可以防止与静态站立工作姿势相关的不良下肢结果。与行业的相关性：这项工作展示了定量证据，支持坐站凳在工业工作操作中的潜在使用，至少在相对较短的时间内。 (C) 2014 Elsevier B.V. 保留所有权利。
Sit-stand stools are available for use in industrial settings, but there is a lack of quantitative evidence demonstrating benefits for lower limb, back and/or neck/shoulder outcomes. In this paper we describe an experiment conducted to compare and contrast posture and time-related differences in muscular and vascular outcomes during 34 min of manual repetitive work performed in either standing or sit-standing work posture. We measured vascular parameters in the lower limbs, and muscular parameters in the trunk and neck/shoulder, and discomfort in the three regions as participants accomplished a repetitive box-folding task. Results show that blood flow in the foot (p = 0.022) and ankle mean arterial pressure (p < 0.001) were greater during standing. Left gluteus medius and external oblique activation was higher during standing, while sit-standing work resulted in higher levels of co-activation between the left erector spinae and external oblique muscle pair (p = 0.026). Neck/shoulder muscle activity was not significantly different between the conditions. Reported discomfort did not differ significantly for the trunk and neck/shoulder region, but standing resulted in higher level of reported discomfort in the lower limb. The sit-stand posture used in this experiment appears to prevent the undesirable lower limb outcomes associated with static standing work posture.Relevance to industry: This work demonstrates quantitative evidence to support the potential use of a sit-stand stool for industrial work operations, at least over relatively short durations. (C) 2014 Elsevier B.V. All rights reserved.