@Article{info:doi/10.2196/12782,
author="Halse, Rhiannon E
and Shoneye, Charlene L
and Pollard, Christina M
and Jancey, Jonine
and Scott, Jane A
and Pratt, Iain S
and Dhaliwal, Satvinder S
and Norman, Richard
and Straker, Leon M
and Boushey, Carol J
and Delp, Edward J
and Zhu, Fengqing
and Harray, Amelia J
and Szybiak, Maria A
and Finch, Anne
and McVeigh, Joanne A
and Mullan, Barbara
and Collins, Clare E
and Mukhtar, Syed Aqif
and Edwards, Kieran N
and Healy, Janelle D
and Kerr, Deborah A",
title="Improving Nutrition and Activity Behaviors Using Digital Technology and Tailored Feedback: Protocol for the LiveLighter Tailored Diet and Activity (ToDAy) Randomized Controlled Trial",
journal="JMIR Res Protoc",
year="2019",
month="Feb",
day="25",
volume="8",
number="2",
pages="e12782",
keywords="obesity; diet; physical activity; sedentary; digital behavioral interventions; health behavior; wearable activity monitor; mHealth; eHealth; mobile food record",
abstract="Background: 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. Objective: 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). Methods: 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. Results: Enrolment commenced in August 2017. Primary outcomes at 12 months will be available for analysis from September 2019. Conclusions: 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. Trial Registration: 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 ",
issn="1929-0748",
doi="10.2196/12782",
url="http://www.researchprotocols.org/2019/2/e12782/",
url="https://doi.org/10.2196/12782",
url="http://www.ncbi.nlm.nih.gov/pubmed/30801257"
}