Abstract
OBJECTIVE: To evaluate trends in physical activity levels and their associations with demographic characteristics, health status, and lifetime cardiovascular disease (CVD) risk. METHODS: A longitudinal analysis was conducted using data from 987 males and 1,001 females (45 ± 12 years old) participating in the ATTICA cohort study. Physical activity levels were assessed at baseline (2001-2002) and subsequent follow-ups (2006, 2012, and 2022). Four physical activity trajectories according to participants' physical activity tracking were defined, i.e., consistently active/inactive and changed from active/inactive. Twenty-year incidence of hypertension, hypercholesterolemia, and diabetes were evaluated in relation to physical activity trajectories; the life-table method was utilized to forecast the lifetime CVD risk (death without CVD was regarded as a competing event). RESULTS: in total, 47% of the participants were categorized as being consistently inactive, whereas only 9% of males and 15% of females sustained physical activity levels throughout the 20-year follow-up period (p < 0.001). Participants being consistently inactive were from lower socioeconomic backgrounds (p = 0.002). Transitioning to being physically active was associated with higher education level and being married (p < 0.001). Consistently active individuals had up to 35% reduced lifetime CVD risk, and lower 20-year incidence of hypertension, and hypercholesterolemia (p < 0.01); no association was observed regarding diabetes incidence. CONCLUSIONS: Promoting and maintaining regular physical activity throughout lifespan is crucial for reducing lifetime CVD risk and related risk factors. Tailored interventions addressing demographic and socioeconomic factors may help enhance cardiovascular health outcomes.