Circulating protein levels may serve as a biomarker for cardiorespiratory fitness, an important but previously hard-to-measure component of overall health, according to a study published in Nature Medicine.
Although cardiorespiratory function can provide a snapshot of holistic health, no standardized method currently exists to measure cardiorespiratory fitness, said Ravi Kalhan, MD, MS, professor of Medicine in the Division of Pulmonary and Critical Care, of Preventive Medicine in the Division of
