ERIC Number: EJ1047497
Record Type: Journal
Publication Date: 2014-Dec
Abstractor: As Provided
Short- and Long-Term Theory-Based Predictors of Physical Activity in Women Who Participated in a Weight-Management Program
Wasserkampf, A.; Silva, M. N.; Santos, I. C.; Carraça, E. V.; Meis, J. J. M.; Kremers, S. P. J.; Teixeira, P. J.
Health Education Research, v29 n6 p941-952 Dec 2014
This study analyzed psychosocial predictors of the Theory of Planned Behavior (TPB) and Self-Determination Theory (SDT) and evaluated their associations with short- and long-term moderate plus vigorous physical activity (MVPA) and lifestyle physical activity (PA) outcomes in women who underwent a weight-management program. 221 participants (age 37.6 ± 7.02 years) completed a 12-month SDT-based lifestyle intervention and were followed-up for 24 months. Multiple linear regression analyses tested associations between psychosocial variables and self-reported short- and long-term PA outcomes. Regression analyses showed that control constructs of both theories were significant determinants of short- and long-term MVPA, whereas affective and self-determination variables were strong predictors of short- and long-term lifestyle PA. Regarding short-term prediction models, TPB constructs were stronger in predicting MVPA, whereas SDT was more effective in predicting lifestyle PA. For long-term models, both forms of PA were better predicted by SDT in comparison to TPB. These results highlight the importance of comparing health behavior theories to identify the mechanisms involved in the behavior change process. Control and competence constructs are crucial during early adoption of structured PA behaviors, whereas affective and intrinsic sources of motivation are more involved in incidental types of PA, particularly in relation to behavioral maintenance.
Descriptors: Females, Body Weight, Self Determination, Predictor Variables, Psychological Patterns, Social Influences, Correlation, Physical Activity Level, Health Promotion, Life Style, Intervention, Outcomes of Treatment, Behavior Modification, Health Behavior, Multiple Regression Analysis
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Publication Type: Journal Articles; Reports - Research
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