Factors and associations for physical activity in severely obese adults during a two-year lifestyle intervention
Objective. This study of severely obese adults participating in a two-year lifestyle intervention investigates associations between the independent variables: change in self-efficacy for physical activity (PA) in the face of psychological barriers, perceived behavioural control over PA, and PA self-...
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doaj-f26a13c6e7634fe0b088123c667d44802020-11-24T20:55:09ZengPeerJ Inc.PeerJ2167-83592014-08-012e50510.7717/peerj.505505Factors and associations for physical activity in severely obese adults during a two-year lifestyle interventionRandi Jepsen0Eivind Aadland1Lesley Robertson2Merete Kristiansen3John Roger Andersen4Gerd Karin Natvig5Faculty of Health Studies, Sogn og Fjordane University College, Førde, NorwayFaculty of Health Studies, Sogn og Fjordane University College, Førde, NorwayRed Cross Haugland Rehabilitation Centre, Flekke, NorwayFaculty of Teacher Education and Sport, Sogn og Fjordane University College, Sogndal, NorwayFaculty of Health Studies, Sogn og Fjordane University College, Førde, NorwayDepartment of Global Public Health and Primary Care, University of Bergen, Bergen, NorwayObjective. This study of severely obese adults participating in a two-year lifestyle intervention investigates associations between the independent variables: change in self-efficacy for physical activity (PA) in the face of psychological barriers, perceived behavioural control over PA, and PA self-identity and the dependent variable of change in objectively assessed PA. The intervention comprised four residential periods in a rehabilitation centre and combined diet, physical activity, and cognitive behavioural therapy.Materials and Methods. Forty-nine severely obese adults (37 women, mean body mass index 42.1 kg/m2) were included in the study. Assessment was done four times using questionnaires and an accelerometer. A linear mixed model based on restricted maximum likelihood was used in analyses for change over time. Associations were studied using linear regression analyses. Age, gender, and change in body mass index were used as control variables.Results. In the adjusted analyses, change in perceived behavioural control over PA was associated with change in PA (Stand. coeff. = 0.32, p = .005). Change in PA was not associated with either change in self-efficacy over PA in the face of psychological barriers (Stand. coeff. = 0.13, p = .259) or PA self-identity (Stand. coeff. = −0.07, p = .538).Conclusion. Perceived behavioural control may be a valid target to increase and maintain PA in severely obese adults participating in lifestyle interventions. More research is needed to investigate the process of behaviour change in this population.https://peerj.com/articles/505.pdfSevere obesityPhysical activityLifestyle interventionSelf-identitySelf-efficacyPerceived behavioural control |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Randi Jepsen Eivind Aadland Lesley Robertson Merete Kristiansen John Roger Andersen Gerd Karin Natvig |
spellingShingle |
Randi Jepsen Eivind Aadland Lesley Robertson Merete Kristiansen John Roger Andersen Gerd Karin Natvig Factors and associations for physical activity in severely obese adults during a two-year lifestyle intervention PeerJ Severe obesity Physical activity Lifestyle intervention Self-identity Self-efficacy Perceived behavioural control |
author_facet |
Randi Jepsen Eivind Aadland Lesley Robertson Merete Kristiansen John Roger Andersen Gerd Karin Natvig |
author_sort |
Randi Jepsen |
title |
Factors and associations for physical activity in severely obese adults during a two-year lifestyle intervention |
title_short |
Factors and associations for physical activity in severely obese adults during a two-year lifestyle intervention |
title_full |
Factors and associations for physical activity in severely obese adults during a two-year lifestyle intervention |
title_fullStr |
Factors and associations for physical activity in severely obese adults during a two-year lifestyle intervention |
title_full_unstemmed |
Factors and associations for physical activity in severely obese adults during a two-year lifestyle intervention |
title_sort |
factors and associations for physical activity in severely obese adults during a two-year lifestyle intervention |
publisher |
PeerJ Inc. |
series |
PeerJ |
issn |
2167-8359 |
publishDate |
2014-08-01 |
description |
Objective. This study of severely obese adults participating in a two-year lifestyle intervention investigates associations between the independent variables: change in self-efficacy for physical activity (PA) in the face of psychological barriers, perceived behavioural control over PA, and PA self-identity and the dependent variable of change in objectively assessed PA. The intervention comprised four residential periods in a rehabilitation centre and combined diet, physical activity, and cognitive behavioural therapy.Materials and Methods. Forty-nine severely obese adults (37 women, mean body mass index 42.1 kg/m2) were included in the study. Assessment was done four times using questionnaires and an accelerometer. A linear mixed model based on restricted maximum likelihood was used in analyses for change over time. Associations were studied using linear regression analyses. Age, gender, and change in body mass index were used as control variables.Results. In the adjusted analyses, change in perceived behavioural control over PA was associated with change in PA (Stand. coeff. = 0.32, p = .005). Change in PA was not associated with either change in self-efficacy over PA in the face of psychological barriers (Stand. coeff. = 0.13, p = .259) or PA self-identity (Stand. coeff. = −0.07, p = .538).Conclusion. Perceived behavioural control may be a valid target to increase and maintain PA in severely obese adults participating in lifestyle interventions. More research is needed to investigate the process of behaviour change in this population. |
topic |
Severe obesity Physical activity Lifestyle intervention Self-identity Self-efficacy Perceived behavioural control |
url |
https://peerj.com/articles/505.pdf |
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