多组分干预以减少每日久坐时间：一项随机对照试验。
Multicomponent intervention to reduce daily sedentary time: a randomised controlled trial.
机构信息
Department of Health and Human Physiology, University of Iowa, Iowa City, Iowa, USA.
出版信息
BMJ Open. 2013 Oct 18;3(10):e003261. doi: 10.1136/bmjopen-2013-003261.
OBJECTIVES
To test the efficacy of a multicomponent technology intervention for reducing daily sedentary time and improving cardiometabolic disease risk among sedentary, overweight university employees.
DESIGN
Blinded, randomised controlled trial.
SETTING
A large south-eastern university in the USA.
PARTICIPANTS
49 middle-aged, primarily female, sedentary and overweight adults working in sedentary jobs enrolled in the study. A total of 40 participants completed the study.
INTERVENTIONS
Participants were randomised to either: (1) an intervention group (N=23; 47.6+9.9 years; 94.1% female; 33.2+4.5 kg/m(2)); (2) or wait-list control group (N=17; 42.6+8.9 years; 86.9% female; 31.7+4.9 kg/m(2)). The intervention group received a theory-based, internet-delivered programme, a portable pedal machine at work and a pedometer for 12 weeks. The wait-list control group maintained their behaviours for 12 weeks.
OUTCOME MEASURES
Primary (sedentary and physical activity behaviour measured objectively through StepWatch) and secondary (heart rate, blood pressure, height, weight, waist circumference, per cent body fat, cardiorespiratory fitness, fasting lipids) outcomes were measured at baseline and postintervention (12 weeks). Exploratory outcomes including intervention compliance and process evaluation measures were also assessed postintervention.
RESULTS
Compared to controls, the intervention group reduced daily sedentary time (mean change (95%CI): -58.7 min/day (-118.4 to 0.99; p<0.01)) after adjusting for baseline values and monitor wear time. Intervention participants logged on to the website 71.3% of all intervention days, used the pedal machine 37.7% of all working intervention days and pedalled an average of 31.1 min/day.
CONCLUSIONS
These findings suggest that the intervention was engaging and resulted in reductions in daily sedentary time among full-time sedentary employees. These findings hold public health significance due to the growing number of sedentary jobs and the potential of these technologies in large-scale worksite programmes.
TRIAL REGISTRATION
ClinicalTrials.gov #NCT01371084.
目的
测试一种多成分技术干预措施在减少久坐时间和改善久坐、超重的美国大学员工患心血管疾病风险方面的效果。
设计
盲法、随机对照试验。
地点
美国东南部的一所大型大学。
参与者
49 名中年、主要为女性、久坐和超重的成年人，他们从事久坐的工作并参加了这项研究。共有 40 名参与者完成了这项研究。
干预措施
参与者被随机分配到以下两组之一：（1）干预组（N=23；47.6+9.9 岁；94.1%为女性；33.2+4.5 kg/m²）；（2）或候补名单对照组（N=17；42.6+8.9 岁；86.9%为女性；31.7+4.9 kg/m²）。干预组接受了基于理论的、互联网提供的方案、工作时使用的便携式脚踏机和计步器，为期 12 周。候补名单对照组在 12 周内维持他们的行为。
结果
与对照组相比，干预组在调整了基线值和监测器佩戴时间后，每天的久坐时间减少了（平均变化（95%置信区间）：-58.7 分钟/天（-118.4 到 0.99；p<0.01））。干预组参与者在所有干预日中登录网站的比例为 71.3%，在所有工作日中使用脚踏机的比例为 37.7%，平均每天脚踏 31.1 分钟。
结论
这些发现表明，该干预措施具有吸引力，并且可以减少全职久坐员工的日常久坐时间。由于越来越多的久坐工作和这些技术在大规模工作场所计划中的潜力，这些发现具有公共卫生意义。
试验注册
ClinicalTrials.gov #NCT01371084。
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