Exercise Never Gets Old: The Role of Exercise in Midlife and Older Adults in Cardiovascular Disease Prevention.

Cardiorespiratory fitness (CRF) declines with aging due to cardiovascular, muscular, and vascular changes, markedly increasing the risk of cardiovascular disease, frailty, and loss of independence. Sedentary behavior accelerates reductions in Vo2max, worsens body composition, and impairs myocardial and vascular function. In contrast, regular exercise across the lifespan attenuates age-related declines in CRF, improves myocardial compliance, vascular health, metabolic profile, and reduces morbidity and mortality. Exercise benefits extend to primary and secondary prevention, heart failure, and frailty management. Although adaptations are attenuated with advanced age, meaningful improvements remain achievable, underscoring exercise as a cornerstone of cardiovascular health.