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Long term effects of self-determination theory and motivational interviewing in a web-based physical activity intervention: randomized controlled trial.
- Source :
- International Journal of Behavioral Nutrition & Physical Activity; 2015, Vol. 12, p1-13, 13p, 1 Diagram, 4 Charts
- Publication Year :
- 2015
-
Abstract
- Background: Our main objective in the current study was to evaluate the long-term effectiveness (12 months from baseline) of I Move (a web-based computer tailored physical activity intervention, based on self-determination theory and motivational interviewing). To this end, we compared I Move to a web-based computer tailored physical activity intervention based on traditional health behavior theories (Active Plus), and to a no-intervention control group. As a secondary objective, the present study aimed to identify participant characteristics that moderate the long term effects of I Move and Active Plus. Methods: A randomized controlled trial was conducted, comparing three research conditions: 1) the I Move condition, participants in this condition received I Move; 2) the Active Plus condition, participants in this condition received Active Plus; 3) the control condition; participants in this condition received no intervention and were placed on a waiting list. Main outcome measures were weekly minutes of moderate to vigorous physical activity and weekly days with minimal 30 min of physical activity. All measurements were taken by web-based questionnaires via the study website. Intervention effects were analyzed using multilevel linear regression analyses. Results: At 12 months from baseline, I Move was found to be effective in increasing weekly minutes of moderate to vigorous physical activity (ES = .13), while Active Plus was not. In contrast, Active Plus was found to be effective in increasing weekly days with ≥ 30 min PA at 12 months (ES = .11), while I Move was not. No moderators of the effects of I Move were found. Conclusions: The results suggest that web-based computer tailored physical activity interventions might best include elements based on both self-determination theory/motivational interviewing and traditional health behavioral theories. To be more precise, it is arguable that the focus of the theoretical foundations, used in new web-based PA interventions should depend on the intended program outcome. In order to draw firm conclusions, however, more research on the effects of self-determination theory and motivational interviewing in web-based physical activity promotion is needed. Trial registration: Dutch Trial Register NTR4129 [ABSTRACT FROM AUTHOR]
- Subjects :
- APPLICATION software
CHI-squared test
CONCEPTUAL structures
STATISTICAL correlation
HEALTH behavior
HEALTH outcome assessment
PROBABILITY theory
QUESTIONNAIRES
REGRESSION analysis
RESEARCH funding
STATISTICS
TIME
WORLD Wide Web
STATISTICAL power analysis
DATA analysis
EFFECT sizes (Statistics)
RANDOMIZED controlled trials
MOTIVATIONAL interviewing
EXERCISE intensity
PHYSICAL activity
DATA analysis software
ONE-way analysis of variance
Subjects
Details
- Language :
- English
- ISSN :
- 14795868
- Volume :
- 12
- Database :
- Complementary Index
- Journal :
- International Journal of Behavioral Nutrition & Physical Activity
- Publication Type :
- Academic Journal
- Accession number :
- 109221219
- Full Text :
- https://doi.org/10.1186/s12966-015-0262-9