Jerome Matthew, Janz Kathleen F, Baquero Barbara, Carr Lucas J
Department of Health and Human Physiology, University of Iowa, 225 South Grand Avenue, Iowa City, IA 52242, United States.
Department of Community and Behavioral Health, University of Iowa, 145 N Riverside Dr, Iowa City, IA 52246, United States.
Prev Med Rep. 2017 Nov 9;8:232-237. doi: 10.1016/j.pmedr.2017.10.019. eCollection 2017 Dec.
Excessive sedentary behavior has been associated with many negative health outcomes. While an understudied health topic, there is evidence that university students are excessively sedentary. Sit-stand desks have been shown to reduce sedentary time among pre-university students (ages 5-18 years) and sedentary workers but have not been tested in university classrooms. This study tested the effects of introducing sit-stand desks into a university classroom on student's classroom sitting and standing behaviors. Using a cross-over design, students received access to both traditional seated desks and sit-stand desks for six weeks. Data were collected between September and December, 2016. We recruited 304 healthy undergraduate university students enrolled in one of two small (25 seats) classrooms at a large Midwestern university during the fall of 2016. Average minutes of standing/hour/student, average percent class time spent standing, and the number of sit-stand transitions/student/hour were directly observed with video camera surveillance. Participants stood significantly more (p < 0.001) when provided access to sit-stand desks (7.2 min/h/student; 9.3% of class time spent standing) compared to when they had access to seated desks (0.7 min/h/student; 1.6% of class time spent standing) but no differences were observed for the number of sit-stand transitions (p = 0.47). Students reported high favorability for the sit-stand desks and improvements in several student engagement and affective outcomes while using the sit-stand desks. These findings support introducing sit-stand desks in university classrooms as an approach to reduce sedentary behaviors of university students.
久坐行为过多与许多负面健康结果相关。虽然这是一个研究较少的健康话题，但有证据表明大学生久坐行为过多。研究表明，升降桌可减少中小学学生（5 - 18岁）和久坐办公人员的久坐时间，但尚未在大学教室进行测试。本研究测试了在大学教室引入升降桌对学生课堂坐立行为的影响。采用交叉设计，学生在六周内可使用传统的坐式书桌和升降桌。数据收集于2016年9月至12月之间。我们招募了304名健康的本科大学生，他们于2016年秋季在中西部一所大型大学的两个小教室（25个座位）之一上课。通过摄像机监控直接观察每个学生每小时站立的平均分钟数、课堂上站立的平均百分比时间以及每个学生每小时坐立转换的次数。与使用坐式书桌时相比（每个学生每小时站立0.7分钟；占课堂时间的1.6%），当学生可以使用升降桌时，他们站立的时间显著增加（p < 0.001）（每个学生每小时站立7.2分钟；占课堂时间的9.3%），但坐立转换次数没有差异（p = 0.47）。学生们对升降桌评价很高，并且在使用升降桌时，学生的参与度和情感方面的几个指标都有所改善。这些研究结果支持在大学教室引入升降桌，作为减少大学生久坐行为的一种方法。
