Longitudinal Analysis of Cardiovascular Risk Factors Among Older Adults Participating in a Park-Based Fitness Program.

Background: Physical inactivity is a major risk factor for noncommunicable diseases, particularly among older adults. We examined changes in cardiovascular risk factors among older adults in a community-based fitness program in Miami-Dade County, FL. Methods: We used repeated measures linear mixed models to examine participants' cardiovascular risk factor changes over 28 months. Outcomes (body mass index, blood pressure, pulse, arm/leg strength, and mobility) were modeled accounting for park, individual, time, and sociodemographic factors (2017-2019). Results: The study included 210 participants (mean age 71 years; 86% female; 52% Hispanic, 38% non-Hispanic Black). Participation was positively associated with reductions in cardiovascular risk, including improvements in systolic and diastolic blood pressure (-0.83 and -0.39 mmHg, respectively), mobility (-0.07 s) and arm strength (0.5 arm curls). Differences were observed in arm curls across sex and pulse across poverty areas. Conclusion: Participating in a park-based fitness program was associated with improved older adults' cardiovascular health.