2013 Annual Report
1a.Objectives (from AD-416):
Develop and evaluate culturally appropriate dietary and physical activity interventional strategies, based upon the Dietary Guidelines for Americans (DGA), for obesity prevention and health promotion in this population.
1b.Approach (from AD-416):
This objective will be accomplished in two stages. We will first develop and evaluate relevant and culturally appropriate dietary modifications aimed at effecting significant improvement in adherence to the 2005 Dietary Guidelines for Americans (DGA) in Delta populations. This will be accomplished by performing analysis of existing data from the FOODS 2000 study and food supply adequacy study to develop specific culturally acceptable dietary modification that can improve scores for specific health eating index (HEI)-2005 dietary components using familiar and available foods. The potential population impact of these modifications will be evaluated using data simulations methods. Finally we will utilize these dietary modifications to develop a culturally apporpriate church-based intervention aimed at improving dietary quality and physical activity frequency among Delta African Americans.
In collaboration with the University of Illinois at Chicago, Delta Health Alliance, and Mississippi Valley State University, ARS researchers completed data collection for the last of three iterations of a full-scale, group randomized, church-based, dietary and physical activity intervention, Delta Body and Soul, for African American adults residing in the Lower Mississippi Delta region of Mississippi. Demographic, diet, physical activity, and psychosocial measures were collected on 122 control and 287 intervention participants in the moderate intensity arm of Delta Body and Soul in 2011-2012. Baseline and follow-up data have been cleaned, double-entered, and systematically checked for accuracy (utilizing a multi-level quality assurance process) using an in-house, real time, remote database designed for this project. Baseline and follow-up dietary surveys have been processed and received from our collaborators at Northeastern University. The dietary database has been checked for inconsistencies and reconciled as appropriate. The analyses of the Delta Body and Soul pilot and low intensity study data collected in 2009-2010 and 2010-2011, respectively, have been completed. One manuscript reporting the results of the pilot study is being revised for submission to a peer-reviewed journal. One manuscript reporting the results of the low intensity study has been published and a second has been accepted for publication in peer-reviewed journals. Preliminary analysis of the Delta Body and Soul moderate intensity study data collected in 2011-2012 has been conducted and a manuscript reporting on the main outcomes is in preparation for submission to a peer-reviewed journal.
Effective intervention for improving diet quality and increasing physical activity in Lower Mississippi Delta African American adults. The Lower Mississippi Delta region is one of the most rural, impoverished, and health disparate regions of the country. In collaboration with the University of Illinois at Chicago, Delta Health Alliance, and Mississippi Valley State University, ARS scientists in the Delta Human Nutrition Research Program at Stoneville, Mississippi, conducted Delta Body and Soul, a church-based, diet and physical activity intervention for Lower Mississippi Delta African American adults. This church-based study was conducted in 21 churches with 938 participants (357 control and 563 intervention). The intervention components included educational sessions that incorporated both formal presentations and hands-on activities, such as cooking demonstrations and nutritional label reading. This study, which led to improvements in diet quality, increased physical activity, and decreased blood pressure, may serve as a model for delivering effective health interventions to high risk, rural, African American populations.
Tussing-Humphreys, L.M., Thomson, J.L., Mayo, T.T., Edmond, E. 2013. A church-based diet and physical activity intervention for rural, lower Mississippi Delta African American adults: Delta Body and Soul effectiveness study, 2010-2011. Preventing Chronic Disease. 10:120286.