使用坐立两用办公桌对超重和肥胖成年人模拟工作日内不适感、疲劳感和嗜睡感评分的影响。
Effect of Using a Sit-Stand Desk on Ratings of Discomfort, Fatigue, and Sleepiness Across a Simulated Workday in Overweight and Obese Adults.
出版信息
J Phys Act Health. 2018 Oct 1;15(10):788-794. doi: 10.1123/jpah.2017-0639. Epub 2018 Aug 24.
BACKGROUND
Limited research examines the influence of sit-stand desks on ratings of discomfort, sleepiness, and fatigue. This study evaluated the time course of these outcomes over 1 day.
METHODS
Adults (N = 25) completed a randomized cross-over study in a laboratory with two 8-hour workday conditions: (1) prolonged sitting (SIT) and (2) alternating sitting and standing every 30 minutes (SIT-STAND). Sleepiness was assessed hourly. Discomfort, physical fatigue, and mental fatigue were measured every other hour. Linear mixed models evaluated whether these measures differed across conditions and the workday. Effect sizes were calculated using Cohen's d.
RESULTS
Participants were primarily white (84%) males (64%), with mean (SD) body mass index of 31.9 (5.0) kg/m and age 42 (12) years. SIT-STAND resulted in decreased odds of discomfort (OR = 0.37, P = .01) and lower overall discomfort (β = -0.19, P < .001, d = 0.42) versus SIT. Discomfort during SIT-STAND was lower in the lower and upper back, but higher in the legs (all Ps< .01, d = 0.26-0.42). Sleepiness (β = -0.09, P = .01, d = 0.15) and physical fatigue (β = -0.34, P = .002, d = 0.34) were significantly lower in SIT-STAND. Mental fatigue was similar across conditions.
CONCLUSIONS
Sit-stand desks may reduce acute levels of sleepiness, physical fatigue, and both overall and back discomfort. However, levels of lower extremity discomfort may be increased with acute exposure.
背景
有限的研究考察了坐站式办公桌对不适、嗜睡和疲劳评分的影响。本研究评估了这些结果在一天内的时程变化。
方法
成年人（N=25）在实验室中完成了一项随机交叉研究，有两种 8 小时工作日条件：（1）长时间坐着（SIT）和（2）每隔 30 分钟交替坐着和站着（SIT-STAND）。每小时评估一次嗜睡程度。每隔一小时测量一次不适、身体疲劳和精神疲劳。线性混合模型评估了这些措施在条件和工作日之间是否存在差异。使用 Cohen's d 计算效应大小。
结果
参与者主要为白人（84%）男性（64%），平均（SD）体重指数为 31.9（5.0）kg/m2，年龄为 42（12）岁。与 SIT 相比，SIT-STAND 降低了不适的可能性（OR=0.37，P=0.01）和总体不适程度（β=-0.19，P<0.001，d=0.42）。SIT-STAND 时，下背部和上背部的不适程度较低，但腿部的不适程度较高（所有 P<0.01，d=0.26-0.42）。SIT-STAND 时的嗜睡程度（β=-0.09，P=0.01，d=0.15）和身体疲劳程度（β=-0.34，P=0.002，d=0.34）显著降低。两种条件下的精神疲劳程度相似。
结论
坐站式办公桌可能会降低急性嗜睡、身体疲劳以及整体和背部不适的程度。然而，急性暴露可能会增加下肢不适的程度。
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