Barbieri Dechristian França, Brusaca Luiz Augusto, Mathiassen Svend Erik, Oliveira Ana Beatriz
J Phys Act Health. 2020 Nov 2;17(12):1222-1230. doi: 10.1123/jpah.2020-0328.
Sit-stand desks have been suggested as an initiative to increase posture variation among office workers. However, there is limited evidence of what would be preferable combinations of time sitting and standing. The aim of this study was to determine and compare perceived pleasantness, acceptability, pain, and fatigue for 5 time patterns of sitting and standing at a sit-stand desk.
Thirty postgraduate students were equally divided into a normal-weight (mean body mass index 22.8 kg/m2) and an overweight/obese (mean body mass index 28.1 kg/m2) group. They performed 3 hours of computer work at a sit-stand desk on 5 different days, each day with a different time pattern (A: 60-min sit/0-min stand; B: 50/10; C: 40/20; D: 30/30; E: 20/40). Pleasantness, acceptability, pain, and fatigue ratings were obtained at the beginning and at the end of the 3-hour period.
High ratings of pleasantness were observed for time patterns B, C, and D in both groups. All participants rated acceptability to be good for time patterns A to D. A minor increase in perceived fatigue and pain was observed in time pattern E.
For new sit-stand desk users, regardless of body mass index, 10 to 30 minutes of standing per hour appears to be an amenable time pattern.
升降桌被认为是一种增加办公室工作人员姿势变化的举措。然而，关于坐立时间的最佳组合的证据有限。本研究的目的是确定并比较在升降桌上5种坐立时间模式下的主观愉悦度、可接受度、疼痛和疲劳程度。
30名研究生被平均分为正常体重组（平均体重指数22.8kg/m²）和超重/肥胖组（平均体重指数28.1kg/m²）。他们在5个不同的日子里在升降桌上进行3小时的电脑工作，每天采用不同的时间模式（A：60分钟坐/0分钟站；B：50/10；C：40/20；D：30/30；E：20/40）。在3小时时间段开始和结束时获取愉悦度、可接受度、疼痛和疲劳评分。
两组中，时间模式B、C和D的愉悦度评分较高。所有参与者对时间模式A至D的可接受度评价都很好。在时间模式E中，主观疲劳和疼痛略有增加。
对于新使用升降桌的用户，无论体重指数如何，每小时站立10至30分钟似乎是一种合适的时间模式。
