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  • Theory-based digital intervention to promote weight loss and weight loss maintenance (Choosing Health): protocol for a randomised controlled trial

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    Author(s)
    Kwasnicka, D
    Luszczynska, A
    Hagger, MS
    Quested, E
    Pagoto, SL
    Verboon, P
    Robinson, S
    Januszewicz, A
    Idziak, P
    Palacz, I
    Naughton, F
    Griffith University Author(s)
    Hagger, Martin S.
    Year published
    2020
    Metadata
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    Abstract
    INTRODUCTION: Digital behavioural weight loss interventions have the potential to improve public health; however, these interventions are often not adequately tailored to the needs of the participants. This is the protocol for a trial that aims to determine the effectiveness and cost-effectiveness of the Choosing Health programme as a means to promote weight loss and weight loss maintenance among overweight/obese adults. METHODS AND ANALYSIS: The proposed study is a two-group randomised controlled trial with a nested interrupted time series (ITS) within-person design. Participants (n=285) will be randomly assigned to either ...
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    INTRODUCTION: Digital behavioural weight loss interventions have the potential to improve public health; however, these interventions are often not adequately tailored to the needs of the participants. This is the protocol for a trial that aims to determine the effectiveness and cost-effectiveness of the Choosing Health programme as a means to promote weight loss and weight loss maintenance among overweight/obese adults. METHODS AND ANALYSIS: The proposed study is a two-group randomised controlled trial with a nested interrupted time series (ITS) within-person design. Participants (n=285) will be randomly assigned to either the Choosing Health digital intervention or a control group. For intervention participants, ecological momentary assessment will be used to identify behavioural determinants for each individual in order to tailor evidence-based behaviour change techniques and intervention content.Control group participants will receive non-tailored weight loss advice via e-book and generic emails. The primary outcome is the mean difference in weight loss between groups at 6 months controlled for baseline. Secondary outcomes include blood pressure and percentage of body fat; self-reported measures of physical activity, sitting time, quality of life, cost and theory-derived correlates of weight loss. Secondary outcomes will be measured at baseline, 3, 6 and 12 months. The primary outcome for ITS will be daily weight loss plan adherence. Data will be analysed using regression and time series analyses. ETHICS AND DISSEMINATION: Ethics approval was granted by Faculty of Psychology, SWPS University of Social Sciences and Humanities, Wroclaw, Poland, approval number 03/P/12/2019. The project results will be disseminated through structured strategy implemented in collaboration with the Ministry of Health. TRIAL REGISTRATION DETAILS: This trial was registered with www.clinicaltrials.gov; registration number NCT04291482.
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    Journal Title
    BMJ open
    Volume
    10
    Issue
    11
    DOI
    https://doi.org/10.1136/bmjopen-2020-040183
    Copyright Statement
    © Author(s) (or their employer(s)) 2020. This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.
    Subject
    Clinical Sciences
    Public Health and Health Services
    Other Medical and Health Sciences
    nutrition & dietetics
    preventive medicine
    public health
    Publication URI
    http://hdl.handle.net/10072/402757
    Collection
    • Journal articles

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