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Testing motivational and self-regulatory mechanisms of action on device-measured physical activity in the context of a weight loss maintenance digital intervention: A secondary analysis of the NoHoW trial

2023Journal article Restricted access
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dc.contributor.authorEncantado, Jorge
dc.contributor.authorMarques, Marta M.
dc.contributor.authorGouveia, Maria João
dc.contributor.authorSantos, Inês
dc.contributor.authorSánchez-Oliva, David
dc.contributor.authorO'Driscoll, Ruairi
dc.contributor.authorTuricchi, Jake
dc.contributor.authorLarsen, Sofus C.
dc.contributor.authorHorgan, Graham
dc.contributor.authorTeixeira, Pedro J.
dc.contributor.authorStubbs, R James
dc.contributor.authorHeitmann, Berit Lilienthal
dc.contributor.authorPalmeira, António L.
dc.date.accessioned2024-09-26T15:51:28Z
dc.date.available2024-09-26T15:51:28Z
dc.date.issued2023
dc.description.abstractBackground To date, few digital behavior change interventions for weight loss maintenance focusing on long-term physical activity promotion have used a sound intervention design grounded on a logic model underpinned by behavior change theories. The current study is a secondary analysis of the weight loss maintenance NoHoW trial and investigated putative mediators of device-measured long-term physical activity levels (six to 12 months) in the context of a digital intervention. Methods A subsample of 766 participants (Age = 46.2 ± 11.4 years; 69.1% female; original NoHoW sample: 1627 participants) completed all questionnaires on motivational and self-regulatory variables and had all device-measured physical activity data available for zero, six and 12 months. We examined the direct and indirect effects of Virtual Care Climate on post intervention changes in moderate-to-vigorous physical activity and number of steps (six to 12 months) through changes in the theory-driven motivational and self-regulatory mechanisms of action during the intervention period (zero to six months), as conceptualized in the logic model. Results Model 1 tested the mediation processes on Steps and presented a poor fit to the data. Model 2 tested mediation processes on moderate-to-vigorous physical activity and presented poor fit to the data. Simplified models were also tested considering the autonomous motivation and the controlled motivation variables independently. These changes yielded good results and both models presented very good fit to the data for both outcome variables. Percentage of explained variance was negligible for all models. No direct or indirect effects were found from Virtual Care Climate to long term change in outcomes. Indirect effects occurred only between the sequential paths of the theory-driven mediators. Conclusion This was one of the first attempts to test a serial mediation model considering psychological mechanisms of change and device-measured physical activity in a 12-month longitudinal trial. The model explained a small proportion of variance in post intervention changes in physical activity. We found different pathways of influence on theory-driven motivational and self-regulatory mechanisms but limited evidence that these constructs impacted on actual behavior change. New approaches to test these relationships are needed. Challenges and several alternatives are discussed.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationEncantado, J., Marques, M. M., Gouveia, M. J., Santos, I., Sánchez-Oliva, D., O, D. R., Turicchi, J., Larsen, S. C., Horgan, G., Teixeira, P. J., Stubbs, R. J., Heitmann, B. L., & Palmeira, A. L. (2023). Testing motivational and self-regulatory mechanisms of action on device-measured physical activity in the context of a weight loss maintenance digital intervention: A secondary analysis of the NoHoW trial. Psychology of Sport & Exercise, 64. https://doi.org/10.1016/j.psychsport.2022.102314pt_PT
dc.identifier.doi10.1016/j.psychsport.2022.102314pt_PT
dc.identifier.issn14690292
dc.identifier.urihttp://hdl.handle.net/10400.12/9964
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevier B.V.pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectPhysical activitypt_PT
dc.subjectMotivationpt_PT
dc.subjectSelf-regulationpt_PT
dc.subjectDigital interventionpt_PT
dc.subjectWeight loss maintenancept_PT
dc.subjectWeight regain preventionpt_PT
dc.titleTesting motivational and self-regulatory mechanisms of action on device-measured physical activity in the context of a weight loss maintenance digital intervention: A secondary analysis of the NoHoW trialpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceJournalspt_PT
oaire.citation.startPage102314pt_PT
oaire.citation.titlePsychology of Sport and Exercisept_PT
oaire.citation.volume64pt_PT
person.familyNameConde Encantado Paulo
person.familyNameMoreira Marques
person.familyNameGouveia
person.familyNameChaparro Roque dos Santos Telo Rasquilha
person.familyNameO'Driscoll
person.familyNameTuricchi
person.familyNameLarsen
person.familyNameHorgan
person.familyNameTeixeira
person.familyNameStubbs
person.familyNameHeitmann
person.givenNameJorge Eduardo
person.givenNameMarta
person.givenNameMaria João
person.givenNameInês
person.givenNameRuairi
person.givenNameJake
person.givenNameSofus C.
person.givenNameGraham
person.givenNamePedro
person.givenNameR James
person.givenNameBerit Lilienthal
person.identifierhttps://scholar.google.com/citations?user=aZdTiKgAAAAJ&hl=en
person.identifierN-1856-2016
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rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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