Reducing Physical Activity Disparities Among Vulnerable Minorities: Methods and Preliminary Outcomes

Abstract

INTRODUCTION: Vulnerable minorities experience high rates of chronic disease. Physical Activity (PA) is an effective preventive behavior to mitigate multiple diseases. Vulnerable minorities have low PA participation. Finding ways to engage vulnerable minorities in PA is imperative. PURPOSE: To describe preliminary data from a community-based wait-list pilot PA trial for vulnerable minorities. METHODS: Forty-five participants from a Midwest urban community were randomized to an experimental (EXP: N = 23; 15 F) or control (CON: N = 22; 15 F) group. Baseline measures are height = 168.5 ± 9.1cm (EXP), and 167.9 ± 7.0cm (CON); weight = 95.8 ± 26.4kg (EXP) and 85.0 ± 19.3kg (CON), age = 39.9 ± 9.7y (EXP) and 48.8 ± 13.2y (CON). EXP participants were counseled to engage in regular PA (>4d/wk for >30 mins). EXP participants received a fitness center membership, trainer, and on-site monthly education to help them develop exercise identity and habit formation. The CON group could engage in PA if desired but did not have the same research resources. Both groups completed monthly surveys assessing exercise identity, social support, and habit formation. Baseline data included one week of moderate-to-vigorous PA (MVPA) and health-related fitness (measured by accelerometry and fitness tests, respectively). RESULTS: Paired-samples T-test were used to make baseline comparisons. Study participants were 73.2% White, 67.4% employed full-time, 56.1% obtained a bachelor’s degree or higher, and 32.0% earned >300% of the federal poverty level. MVPA was 127.9 ± 69.8 min/wk (EXP) and 174.7 ± 103.1 min/wk (CON). Other non-significant outcomes included body fat % (EXP: 37.1 ± 10.9%; CON: 32.9 ± 12.0%), 8ft-up-and-go time (EXP: 5.01 ± 0.8s; CON: 5.05 ± 1.10s), and 30s chair stand (EXP: 15.3 ± 6.5; CON: 17.5 ± 5.2), 30s seated arm curl (EXP: R =18.9 ± 5.1, L = 19.2 ± 5.1; CON: R = 21.2 ± 5.7, L = 20.1 ± 5.4). Chair sit-and-reach scores for right (EXP: -0.1 ± 8.3cm; CON: 1.0 ± 12.2cm, p = 0.003 ) and left (EXP: -0.3 ± 8.2cm; CON: 0.1 ± 11.4cm, p = 0.01) legs were different. CONCLUSION: Data show baseline measures did not vary between groups and difficulty recruiting vulnerable minorities. Next steps include reporting final outcomes and developing refined recruitment methods.