Evaluation of a new causal chain model for predicting embedded psychosocial and behavioral relationships in a community-based obesity treatment seeking maintained weight loss
| Autor: | Stephanie M. Walsh, James J. Annesi |
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| Rok vydání: | 2020 |
| Předmět: |
Adult
Mediation (statistics) 050109 social psychology Models Psychological 050105 experimental psychology Eating Moderated mediation Arts and Humanities (miscellaneous) Weight loss Developmental and Educational Psychology medicine Humans 0501 psychology and cognitive sciences Community Health Services Obesity Exercise General Psychology Cognitive Behavioral Therapy 05 social sciences Behavior change Weight change General Medicine Middle Aged Moderation Self Efficacy Weight Reduction Programs Affect Mood Female medicine.symptom Psychology Psychosocial Clinical psychology Program Evaluation |
| Zdroj: | Scandinavian journal of psychologyREFERENCES. 62(4) |
| ISSN: | 1467-9450 |
| Popis: | A new causal chain model positing theory- and research-based interrelationships among psychosocial and behavioral variables leading to weight loss and its maintenance was assessed. Two samples of women participating in community-based cognitive-behavioral obesity treatments were assessed over either 6 months (weight loss phase; N = 103), or additionally including Months 6-12 (weight-loss maintenance phase; N = 101). Analyses first evaluated whether baseline physical, demographic, behavioral (physical activity, fruit/vegetable intake), and/or psychosocial (self-regulation, self-efficacy, negative mood) variables significantly predicted weight change. Further analyses assessed whether changes in model-based behavioral and psychosocial variables significantly differed by groupings of participants based on their short-term weight loss and weight-loss maintenance/further loss. The predictive value of changes in the psychosocial variables on behavioral changes was next assessed, also accounting for group. Finally, mediation, moderation, and moderated mediation analyses tested proposed causal chain-based interrelationships among variables. Of the 12 variables assessed at baseline, only weight was inversely associated with lost weight, and only fruit/vegetable intake was positively associated with effects during the weight-loss maintenance phase. Overall improvements in behavioral and psychosocial variables were significantly greater in participant groupings with better weight loss and weight-loss maintenance results. Changes in self-regulation, self-efficacy, and mood significantly predicted the weight-loss behavior changes, unaffected by group. Results from the five mediation, moderation, and moderated mediation analyses supported hypotheses based on the new causal chain model. The field testing indicated adequacy of the new causal chain model and informed architectures of behavioral obesity treatments concerned with long-term reductions in excess weight. |
| Databáze: | OpenAIRE |
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