Halse Rhiannon E, Shoneye Charlene L, Pollard Christina M, Jancey Jonine, Scott Jane A, Pratt Iain S, Dhaliwal Satvinder S, Norman Richard, Straker Leon M, Boushey Carol J, Delp Edward J, Zhu Fengqing, Harray Amelia J, Szybiak Maria A, Finch Anne, McVeigh Joanne A, Mullan Barbara, Collins Clare E, Mukhtar Syed Aqif, Edwards Kieran N, Healy Janelle D, Kerr Deborah A
School of Public Health, Curtin University, Perth, Western Australia, Australia.
East Metropolitan Health Service, Perth, Western Australia, Australia.
JMIR Res Protoc. 2019 Feb 25;8(2):e12782. doi: 10.2196/12782.
Excess weight is a major risk factor for chronic diseases. In Australia, over 60% of adults are overweight or obese. The overconsumption of energy-dense nutrient-poor (EDNP) foods and low physical activity (PA) levels are key factors contributing to population obesity. New cost-effective approaches to improve population diet and PA behaviors are needed.
This 1-year randomized controlled trial (6-month intervention and 6-month follow-up) aims to investigate whether a tailored intervention using mobile technology can improve diet and PA behaviors leading to weight loss in adults (aged 18-65 years) who are overweight or obese and recruited through a social marketing campaign (LiveLighter).
All eligible participants will provide data on demographics and lifestyle behaviors online at baseline, 6 months, and 12 months. Using two-stage randomization, participants will be allocated into one of three conditions (n=200 per group): tailored feedback delivered via email at seven time points, informed by objective dietary (mobile food record app) and activity (wearable activity monitor) assessment; active control receiving no tailored feedback, but undergoing the same objective assessments as tailored feedback; and online control receiving no tailored feedback or objective assessments. Primary outcome measures at 6 and 12 months are changes in body mass, EDNP food and beverage consumption, and daily moderate-to-vigorous PA (measured via accelerometry). Secondary outcomes include change in fruit and vegetable consumption, daily sedentary behaviors, and cost effectiveness.
Enrolment commenced in August 2017. Primary outcomes at 12 months will be available for analysis from September 2019.
Tailored email feedback provided to individuals may deliver a cost-effective strategy to overcome existing barriers to improving diet and PA. If found to be successful and cost effective, upscaling this intervention for inclusion in larger-scale interventions is highly feasible.
Australian New Zealand Clinical Trials Registry ACTRN12617000554369; https://www.anzctr.org.au /Trial/Registration/TrialReview.aspx?id=371325&isReview=true.
INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/12782.
超重是慢性疾病的主要风险因素。在澳大利亚，超过60%的成年人超重或肥胖。高能量低密度（EDNP）食物的过度消费和低体力活动（PA）水平是导致人群肥胖的关键因素。需要新的具有成本效益的方法来改善人群的饮食和体力活动行为。
这项为期1年的随机对照试验（6个月干预和6个月随访）旨在调查使用移动技术的定制干预措施是否能够改善超重或肥胖的成年人（年龄在18 - 65岁之间，通过社会营销活动“活得更轻松”招募）的饮食和体力活动行为，从而实现体重减轻。
所有符合条件的参与者将在基线、6个月和12个月时通过在线方式提供人口统计学和生活方式行为数据。采用两阶段随机化，参与者将被分配到三种情况之一（每组n = 200）：在七个时间点通过电子邮件提供定制反馈，该反馈由客观饮食（移动食物记录应用程序）和活动（可穿戴活动监测器）评估提供信息；积极对照组不接受定制反馈，但接受与定制反馈相同的客观评估；在线对照组不接受定制反馈或客观评估。6个月和12个月时的主要结局指标是体重、EDNP食物和饮料消费以及每日中等至剧烈体力活动（通过加速度计测量）的变化。次要结局包括水果和蔬菜消费的变化、每日久坐行为以及成本效益。
2017年8月开始招募。12个月时的主要结局将从2019年9月开始进行分析。
向个人提供定制的电子邮件反馈可能会提供一种具有成本效益的策略，以克服改善饮食和体力活动方面的现有障碍。如果被证明是成功且具有成本效益的，扩大这种干预措施以纳入更大规模的干预措施是非常可行的。
澳大利亚新西兰临床试验注册中心ACTRN12617000554369；https://www.anzctr.org.au /Trial/Registration/TrialReview.aspx?id=371325&isReview=true。
国际注册报告识别号（IRRID）：DERR1-10.2196/12782。
