Department of Kinesiology, 1A Natatorium, 920 Denison Ave., Kansas State University, Manhattan, KS 66506, USA.
Department of Food, Nutrition, Dietetics and Health, 212 Justin Hall, 1324 Lovers Lane, Kansas State University, Manhattan, KS 66506, USA.
Prev Med Rep. 2016 Aug 9;4:423-8. doi: 10.1016/j.pmedr.2016.08.010. eCollection 2016 Dec.
Developing interventions to reduce sedentary behavior in the workplace is an important public health priority. Furthermore, research is needed to determine whether different approaches to breaking up prolonged sitting during the workday are equally feasible and effective. Thus, the purpose of this study was to determine whether varying the frequency and duration of activity breaks during the workday would differentially impact sedentary behavior and health outcomes. Inactive females (N = 49) working full-time sedentary jobs were recruited for this parallel-group randomized trial. Participants were randomly assigned to take short, frequent breaks from sitting (1-2 min every half hour; SB) or longer, planned breaks from sitting (two 15-minute breaks per workday; LB) during each workday across an 8-week intervention. Sedentary time and health outcomes were assessed at baseline and post-intervention. The study ran from March 2014-June 2015. Results showed sedentary time during the workday decreased significantly in the SB group (- 35.6 min; d = - 0.75; p = 0.03), but did not change in the LB group (+ 4.5 min; d = 0.12). Participants in the SB group also demonstrated small-to-moderate declines in total cholesterol (d = - 0.33; p = 0.10), triglycerides (d = - 0.38; p = 0.06) and fasting blood glucose (d = - 0.29; p = 0.01) from pre to post-intervention. Health outcomes did not change in the LB group. This study demonstrated that taking short, frequent breaks from sitting during the workday is a feasible and effective approach for reducing sedentary time at work. These results have implications for the development of public health messages addressing sedentary behavior, and inform future interventions to reduce sedentary time in the workplace.
This study is registered at www.clinicaltrials.gov: NCT02609438.
在工作场所减少久坐行为是一项重要的公共卫生重点。此外，需要研究确定不同的打破工作日长时间坐姿的方法是否同样可行和有效。因此，本研究的目的是确定在工作日期间改变活动休息的频率和持续时间是否会对久坐行为和健康结果产生不同的影响。这项平行组随机试验招募了从事全职久坐工作的非活跃女性（N=49）。参与者被随机分配在每个工作日的工作时间内进行短暂、频繁的坐姿休息（每半小时 1-2 分钟；SB）或较长、计划的坐姿休息（每天两次 15 分钟的休息；LB）。在 8 周的干预期间，评估了久坐时间和健康结果。该研究于 2014 年 3 月至 2015 年 6 月进行。结果表明，SB 组的工作日久坐时间显著减少（-35.6 分钟；d=-0.75；p=0.03），而 LB 组没有变化（+4.5 分钟；d=0.12）。SB 组的参与者还表现出总胆固醇（d=-0.33；p=0.10）、甘油三酯（d=-0.38；p=0.06）和空腹血糖（d=-0.29；p=0.01）的小到中度下降。LB 组的健康结果没有变化。这项研究表明，在工作日期间进行短暂、频繁的坐姿休息是减少工作中久坐时间的可行且有效的方法。这些结果对制定针对久坐行为的公共卫生信息具有启示意义，并为未来在工作场所减少久坐时间的干预措施提供了信息。
本研究在 www.clinicaltrials.gov 上注册：NCT02609438。
