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Journal article
Mediation of effects of a theory-based behavioral intervention on self-reported physical activity in South African men
Preventive medicine, v 72, pp 1-7
Mar 2015
PMID: 25565482
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Increasing physical activity is an important public-health goal worldwide, but there are few published mediation analyses of physical-activity interventions in low-to-middle-income countries like South Africa undergoing a health transition involving markedly increased mortality from non-communicable diseases. This article reports secondary analyses on the mediation of a theory-of-planned-behavior-based behavioral intervention that increased self-reported physical activity in a trial with 1181 men in Eastern Cape Province, South Africa.
Twenty-two matched-pairs of neighborhoods were randomly selected. Within pairs, neighborhoods were randomized to a health-promotion intervention or an attention-matched control intervention with baseline, immediate-post, and 6- and 12-month post-intervention assessments. Theory-of-planned-behavior constructs measured immediately post-intervention were tested as potential mediators of the primary outcome, self-reported physical activity averaged over the 6- and 12-month post-intervention assessments, using a product-of-coefficients approach in a generalized-estimating-equations framework. Data were collected in 2007–2010.
Attitude, subjective norm, self-efficacy, and intention were significant mediators of intervention-induced increases in self-reported physical activity. The descriptive norm, not affected by the intervention, was not a mediator, but predicted increased self-reported physical activity.
The results suggest that interventions targeting theory-of-planned-behavior constructs may contribute to efforts to increase physical activity to reduce the burden of non-communicable diseases among South African men.
•A large percentage of South African men are physically inactive.•Our intervention based on the theory of planned behavior aimed to remedy that.•It increased self-reported adherence to physical-activity guidelines.•Attitude, subjective norm, self-efficacy, and intention were significant mediators.•Serial mediation analysis supports the theory of planned behavior structural model.
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Details
- Title
- Mediation of effects of a theory-based behavioral intervention on self-reported physical activity in South African men
- Creators
- John B. Jemmott - Raymond and Ruth Perelman School of Medicine at the University of PennsylvaniaAlisa Stephens-Shields - University of PennsylvaniaAnn O'Leary - National Center for HIV/AIDS Viral Hepatitis STD and TB PreventionLoretta Sweet Jemmott - School of Nursing, University of PA, USAAnne Teitelman - School of Nursing, University of PA, USAZolani Ngwane - Haverford CollegeXoliswa Mtose - University of Fort Hare
- Publication Details
- Preventive medicine, v 72, pp 1-7
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- College of Nursing and Health Professions
- Web of Science ID
- WOS:000351022100001
- Scopus ID
- 2-s2.0-84920997498
- Other Identifier
- 991019335595804721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Public, Environmental & Occupational Health