Physical Activity for Health Research Centre (PAHRC), Institute for Sport, Physical Education and Health Sciences, University of Edinburgh, Edinburgh, UK.
Centre for Population Health Sciences, Scottish Collaboration for Public Health Research and Policy, University of Edinburgh, Edinburgh, UK.
Br J Sports Med. 2015 Aug;49(16):1056-63. doi: 10.1136/bjsports-2014-094524. Epub 2015 Apr 23.
Time spent in sedentary behaviours (SB) is associated with poor health, irrespective of the level of physical activity. The aim of this study was to evaluate the effect of interventions which included SB as an outcome measure in adults.
Thirteen databases, including The Cochrane Library, MEDLINE and SPORTDiscus, trial registers and reference lists, were searched for randomised controlled trials until January 2014. Study selection, data extraction and quality assessment were performed independently. Primary outcomes included SB, proxy measures of SB and patterns of accumulation of SB. Secondary outcomes were cardiometabolic health, mental health and body composition. Intervention types were categorised as SB only, physical activity (PA) only, PA and SB or lifestyle interventions (PA/SB and diet).
Of 8087 records, 51 studies met the inclusion criteria. Meta-analysis of 34/51 studies showed a reduction of 22 min/day in sedentary time in favour of the intervention group (95% CI -35 to -9 min/day, n=5868). Lifestyle interventions reduced SB by 24 min/day (95% CI -41 to -8 min/day, n=3981, moderate quality) and interventions focusing on SB only by 42 min/day (95% CI -79 to -5 min/day, n=62, low quality). There was no evidence of an effect of PA and combined PA/SB interventions on reducing sedentary time.
There was evidence that it is possible to intervene to reduce SB in adults. Lifestyle and SB only interventions may be promising approaches. More high quality research is needed to determine if SB interventions are sufficient to produce clinically meaningful and sustainable reductions in sedentary time.
久坐行为（SB）与健康状况不佳有关，而与身体活动水平无关。本研究旨在评估以 SB 为结果测量指标的干预措施对成年人的影响。
13 个数据库，包括 Cochrane 图书馆、MEDLINE 和 SPORTDiscus、试验登记处和参考文献列表，均被用于搜索直到 2014 年 1 月的随机对照试验。研究选择、数据提取和质量评估均由独立进行。主要结果包括 SB、SB 的替代测量指标和 SB 积累模式。次要结果包括心血管代谢健康、心理健康和身体成分。干预类型分为仅 SB、仅 PA、PA 和 SB 或生活方式干预（PA/SB 和饮食）。
在 8087 条记录中，有 51 项研究符合纳入标准。对 34/51 项研究的荟萃分析显示，干预组的久坐时间减少了 22 分钟/天（95%CI-35 至-9 分钟/天，n=5868）。生活方式干预使 SB 减少了 24 分钟/天（95%CI-41 至-8 分钟/天，n=3981，中等质量），仅针对 SB 的干预使 SB 减少了 42 分钟/天（95%CI-79 至-5 分钟/天，n=62，低质量）。没有证据表明 PA 和综合 PA/SB 干预对减少久坐时间有影响。
有证据表明，有可能对成年人进行干预以减少 SB。生活方式和仅 SB 干预可能是有前途的方法。需要更多高质量的研究来确定 SB 干预是否足以产生临床上有意义和可持续的减少久坐时间。
