Randomized Trial of a Fitbit-Based Physical Activity Intervention for Women
Randomized Trial of a Fitbit-Based Physical Activity Intervention for Women
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DOI：
10.1016/j.amepre.2015.01.020
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发表时间：
2015-09-01
影响因子：
5.5
通讯作者：
Morey, Brittany L.
中科院分区：
文献类型：
--
作者：
Cadmus-Bertram, Lisa A.;Marcus, Bess H.;Morey, Brittany L.
直接面向消费者的移动健康设备是行为研究的潜在资产，但很少作为干预工具进行测试。该试验将基于加速度计的Fitbit跟踪器和网站作为低接触身体活动干预。本研究的目的是评估，在一个随机对照试验中，整合Fitbit跟踪器和网站到身体活动干预绝经后women.Methods的可行性和初步疗效：51不活跃，绝经后妇女与BMI >= 25.0被随机分为16周的网络为基础的自我监测干预（n=25）或对照组（n=26）。基于网络的跟踪组在4周时收到Fitbit、指导会议和随访电话。对照组接受标准计步器。所有人都被要求每周进行150分钟的中度到剧烈的体力活动（MVPA）。采用ActiGraph GT 3X+加速度计测量体力活动结果。结果：2013-2014年收集数据并进行分析。参与者年龄为60岁（SD=7），BMI为29.2（3.5）kg/m2。相对于基线，基于网络的跟踪组每周增加MVPA 62（108）分钟（p < 0.01）; 10分钟MVPA发作，38（83）分钟/周（p=0.008）;步数增加789（1，979）（p=0.01），相比之下，计步器组无显著增加（组间分别为p=0.11、0.28和0.30）。基于网络的跟踪组在95%的干预日佩戴跟踪器; 96%的人表示喜欢网站，100%的人喜欢tracker.Conclusions：Fitbit在这个女性样本中被广泛接受，并与16周时增加的体力活动相关。利用直接面向消费者的移动健康技术与行为改变理论相结合，可以加强身体活动干预。(C)由Elsevier Inc.出版。美国预防医学杂志（American Journal of Preventive Medicine）
Introduction: Direct-to-consumer mHealth devices are a potential asset to behavioral research but rarely tested as intervention tools. This trial examined the accelerometer-based Fitbit tracker and website as a low-touch physical activity intervention. The purpose of this study is to evaluate, within an RCT, the feasibility and preliminary efficacy of integrating the Fitbit tracker and website into a physical activity intervention for postmenopausal women.Methods: Fifty-one inactive, postmenopausal women with BMI >= 25.0 were randomized to a 16-week web-based self-monitoring intervention (n=25) or comparison group (n=26). The Web-Based Tracking Group received a Fitbit, instructional session, and follow-up call at 4 weeks. The comparison group received a standard pedometer. All were asked to perform 150 minutes/week of moderate to vigorous physical activity (MVPA). Physical activity outcomes were measured by the ActiGraph GT3X+ accelerometer.Results: Data were collected and analyzed in 2013-2014. Participants were aged 60 (SD=7) years with BMI of 29.2 (3.5) kg/m(2). Relative to baseline, the Web-Based Tracking Group increased MVPA by 62 (108) minutes/week (p < 0.01); 10-minute MVPA bouts by 38 (83) minutes/week (p=0.008); and steps by 789 (1,979) (p=0.01), compared to non-significant increases in the Pedometer Group (between-group p=0.11, 0.28, and 0.30, respectively). The Web-Based Tracking Group wore the tracker on 95% of intervention days; 96% reported liking the website and 100% liked the tracker.Conclusions: The Fitbit was well accepted in this sample of women and associated with increased physical activity at 16 weeks. Leveraging direct-to-consumer mHealth technologies aligned with behavior change theories can strengthen physical activity interventions. (C) 2015 Published by Elsevier Inc. on behalf of American Journal of Preventive Medicine