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

Dominika Kwaśnicka , Aleksandra Łuszczyńska , Martin S. Hagger , Eleanor Quested , Sherry L Pagoto , Peter Verboon , Suzanne Robinson , Anna Januszewicz , Paulina Idziak , Iga Palacz , Felix Naughton


IntroductionDigital 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 theChoosing Healthprogramme as a means to promote weight loss and weight loss maintenance among overweight/obese adults.Methods and analysisThe 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 theChoosing Healthdigital 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 disseminationEthics 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 detailsThis trial was registered; registration numberNCT04291482.
Author Dominika Kwaśnicka (Filia we Wrocławiu / Wydział Psychologii we Wrocławiu)
Dominika Kwaśnicka,,
- Wydział Psychologii we Wrocławiu
, Aleksandra Łuszczyńska (Filia we Wrocławiu / Wydział Psychologii we Wrocławiu)
Aleksandra Łuszczyńska,,
- Wydział Psychologii we Wrocławiu
, Martin S. Hagger
Martin S. Hagger,,
, Eleanor Quested
Eleanor Quested,,
, Sherry L Pagoto
Sherry L Pagoto,,
, Peter Verboon
Peter Verboon,,
, Suzanne Robinson
Suzanne Robinson,,
, Anna Januszewicz
Anna Januszewicz,,
, Paulina Idziak (Filia we Wrocławiu / Wydział Psychologii we Wrocławiu)
Paulina Idziak,,
- Wydział Psychologii we Wrocławiu
, Iga Palacz (Filia we Wrocławiu / Wydział Psychologii we Wrocławiu)
Iga Palacz,,
- Wydział Psychologii we Wrocławiu
et al.`
Journal seriesBMJ Open, ISSN 2044-6055, (N/A 100 pkt)
Issue year2020
Publication size in sheets0.3
Article numbere040183
ASJC Classification2700 General Medicine
Languageen angielski
Theory_tekst.pdf 675.27 KB
Additional file
Theory-oswiadczenie-łuszczynska .pdf 657.34 KB
Theory_Oswiadczenie_Idziak.pdf 257.63 KB
Theory_Oswiadczenie_Palacz.pdf 656.7 KB
Theory_Oswiadczenie_Kwasnicka.pdf 656.44 KB
Score (nominal)100
Score sourcejournalList
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.145; WoS Impact Factor: 2018 = 2.376 (2) - 2018=2.863 (5)
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