The upper limit of cardiorespiratory fitness associated with longevity: an update
In 2013, mortality reductions with improving cardiorespiratory fitness (CRF) have been suggested to persist until 13 METs.More recently, accumulating evidence from large-scale studies suggests that mortality from all causes decreases with increasing CRF levels, apparently without upper limit of CRF.However, when baseline CRF is assessed in later li