Lions Hearts: A Community Approach to Multigenerational Cardiovascular Disease Risk

This pilot study evaluates the feasibility, acceptability, and preliminary effectiveness of Lion Hearts, a community-based, family-centered physical activity intervention designed to improve cardiovascular health among mother-child dyads. Developed through community co-design, the 12-week intervention is delivered in local CrossFit affiliates and includes twice-weekly fitness sessions incorporating functional movement, goal setting, teamwork, and health education. The study aims to assess changes in physical activity, fitness, and cardiovascular health markers, as well as family dynamics and motivation for physical activity. Participants complete baseline, mid-, post-, and 3-month follow-up assessments, including surveys, fitness testing, accelerometry, and optional lab work. Findings will inform the refinement of the intervention for future large-scale trials.

Inclusion Criteria: * Mother-child dyad willing to participate together in the full 12-week intervention and assessment activities * Child aged 10-17 years old * Mother (or female caregiver) * Both mother and child must be able to safely engage in moderate-to-vigorous physical activity, as determined by pre-participation health screening (e.g., PAR-Q+) * Access to transportation to attend twice-weekly exercise sessions at a local CrossFit affiliate Exclusion Criteria: * Presence of a medical condition that would make participation in moderate-to-vigorous physical activity unsafe, as determined by health screening or medical provider (e.g., uncontrolled hypertension, cardiovascular disease, severe orthopedic limitations)