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Exercise & fitness

Cardiorespiratory fitness

DEKardiorespiratorische Fitness

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Cardiorespiratory fitness (CRF) is the ability of the circulatory and respiratory systems to deliver oxygen to working muscles during sustained activity, most often quantified by VO2max. It integrates lung function, cardiac output, vascular health, and muscle oxidative capacity. Some large cohort studies (e.g., Mandsager et al. 2018) suggest low CRF can carry mortality risk comparable to or greater than coronary artery disease, smoking, or diabetes, making CRF a powerful modifiable longevity predictor.

Sources

  1. Kodama S, Saito K, Tanaka S, Maki M, Yachi Y, Asumi M, Sugawara A, Totsuka K, Shimano H, Ohashi Y, Yamada N, Sone H. (2009). Cardiorespiratory fitness as a quantitative predictor of all-cause mortality and cardiovascular events in healthy men and women: a meta-analysis. *JAMA*doi:10.1001/jama.2009.681
  2. Mandsager K, Harb S, Cremer P, Phelan D, Nissen SE, Jaber W. (2018). Association of Cardiorespiratory Fitness With Long-term Mortality Among Adults Undergoing Exercise Treadmill Testing. *JAMA Network Open*doi:10.1001/jamanetworkopen.2018.3605