Physical Fitness, Biological Aging, and Healthy Longevity

Physical fitness, particularly cardiorespiratory fitness (CRF) and muscle strength, is associated with reduced disease risk. However, its combined association with biological aging in promoting healthy longevity remains unanswered. We investigated whether cardiorespiratory fitness (CRF) and muscle strength could modify the prospective associations between accelerated biological aging and premature termination of healthy longevity.