217589 Social-ecological determinants of leisure-time physical activity among church-going African Americans in Indianapolis: A structural equation analysis

Tuesday, November 9, 2010

Kaigang Li, PhD , Prevention Research Branch, National Institute of Child Health & Human Development, National Institutes of Health, Rockville, MD
Dong-Chul Seo, PhD , Department of Applied Health Science, Indiana University, Bloomington, IN
Mohammad R. Torabi, PhD , Applied Health Science, Indiana University, Bloomington, IN
Chao-Ying Joanne Peng, PhD , Counseling and Educational Psychology, Indiana University, Bloomington, IN
Noy Kay, HSD , Department of Applied Health Science, Indiana University, Bloomington, IN
Lloyd Kolbe, PhD , Applied Health Science, Indiana University, Bloomington, IN
Objective: To develop and test an explicative model of leisure-time physical activity (LTPA), including six contributory factors to LTPA within a social-ecological framework including self-efficacy, self-regulation, social support, perceived physical environment, outcome expectancy, and policy belief.

Methods: A social-ecological model of LTPA using the structural equation modeling (SEM) was conducted in a sample of 649 African Americans (n=569 in the analysis, 69% female, and 41.1714.05 years) recruited from 27 churches in Indianapolis, Indiana. The primary outcome measure was LTPA which was categorized into two groups: lower than 150 minutes vs. equal or more than 150 minutes LTPA per week. Age, gender, and six latent variables were used to predict LTPA.

Results: The SEM indicated a good fit of SE model to the data, which explained 37.5% of the variance (pseudo R2) observed in LTPA. LTPA was influenced (1) directly and significantly by only self-regulation and gender, (2) indirectly and significantly by social support, self-efficacy, perceived access to LTPA facilities, and positive outcome expectancy, ordered by magnitude, and (3) overall and significantly by self-regulation, social support, self-efficacy, gender, and negative outcome expectancy, ordered by magnitude. Age and policy beliefs did not significantly influence LTPA directly, indirectly and overall, whereas they significantly influenced other latent variables by different magnitudes.

Conclusions: These findings helped to clarify the relationships among variables and LTPA in a multilevel social-ecological framework advocated by an increasing number of researchers in a sample of churching-going African Americans. Multilevel interventions should be applied to improving regular physical activity engagement.

Learning Areas:
Assessment of individual and community needs for health education
Diversity and culture
Social and behavioral sciences

Learning Objectives:
1. Explain associations between six social-ecological determinants and leisure-time physical activity among churching-going African Americans. 2.2. Articulate the procedure in developing and testing an explicative model of leisure-time physical activity using structural equation modeling.

Keywords: Physical Activity, African American

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: I am qualified to present because this study was part of my dissertation, in which I designed and conducted this study, analyzed the data, and wrote the manuscript.
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.