Curtin University, Perth, Australia.
VU University Medical Center, Amsterdam, the Netherlands.
Hum Factors. 2018 Nov;60(7):947-961. doi: 10.1177/0018720818783945. Epub 2018 Jul 11.
To investigate whether use of a movement intervention when undertaking prolonged standing affected discomfort and cognitive function.
Alternate work positions to break up prolonged sitting for office workers are being trialed, such as standing. Prolonged standing has potential negative health implications, including low back and lower limb discomfort, and may influence cognitive function. Introducing movement during standing may provide a healthy and productive alternative work posture.
Twenty adult participants undertook a laboratory study of 2 hr of standing and standing with movement (using a footrest) while performing computer work. Changes in discomfort and cognitive function, with muscle fatigue, low back angle, pelvis movement, lower limb swelling, and mental state, were investigated.
Discomfort increased significantly over time across all body regions. Ankle/foot differed between conditions (incident rate ratio [95% confidence interval]: 1.89 [1.10-3.23]), with higher discomfort during standing with movement. Creative problem-solving errors increased during standing with movement and decreased during standing (Time × Condition: β = 0.64 [0.10-1.18]), with no other cognitive function measure differences. Mental state deteriorated over time for both conditions, greater during standing with movement (Time × Condition: β = 2.44 [0.23-4.66]). No significant interaction effects were found for the other outcome variables.
Standing with movement provided no advantage in discomfort or cognitive function. There were some negative effects for ankle/foot discomfort and creative problem solving. An alternate footrest design and protocol for use may yield more favorable results.
Based on the results from this study, footrest use to raise alternative foot for forced 5-min intervals would not be recommended to assist with managing discomfort while prolonged standing in workplaces.
研究在长时间站立时进行运动干预是否会影响不适和认知功能。
为了打破办公室工作人员长时间坐着的习惯，目前正在尝试使用替代工作姿势，例如站立。长时间站立可能会对健康产生负面影响，包括腰背和下肢不适，并且可能会影响认知功能。在站立时引入运动可能是一种健康且高效的替代工作姿势。
20 名成年参与者参与了一项实验室研究，他们在 2 小时的站立和站立时运动（使用脚踏板）期间执行计算机工作。研究了不适感和认知功能的变化，以及肌肉疲劳、腰背角度、骨盆运动、下肢肿胀和精神状态。
所有身体部位的不适感随时间推移显著增加。踝关节/足部在两种情况下存在差异（发生率比[95%置信区间]：1.89[1.10-3.23]），运动时站立的不适感更高。在运动时站立时，创造性解决问题的错误增加，而在站立时减少（时间×条件：β=0.64[0.10-1.18]），而其他认知功能测量没有差异。两种情况下的精神状态随时间恶化，运动时站立时更严重（时间×条件：β=2.44[0.23-4.66]）。对于其他结果变量，没有发现显著的交互作用。
运动时站立并没有在不适感或认知功能方面提供优势。对于踝关节/足部不适和创造性解决问题有一些负面影响。可能需要替代的脚踏板设计和使用方案，以产生更有利的结果。
基于这项研究的结果，不建议使用脚踏板将脚抬高以替代 5 分钟的强制间隔，以帮助在工作场所长时间站立时缓解不适。
