cardiorespiratory fitness
Type: concept Aliases: aerobic base training
Systems Analogy
The volumetric throughput and pumping capacity of a water cooling system under full engine load.
The capacity of the respiratory and circulatory systems to supply oxygen to working muscles during sustained exertion (often measured via VO2 max).
Scientific Sources & Verbatim Definitions
- Empirical StudyRaghuveer G, et al. Cardiorespiratory Fitness in Youth: An Important, Much Needed, but Overlooked Risk Factor. Circulation. 2020;142(7):e101-e118. ↗
"Cardiorespiratory fitness (CRF) refers to the capacity of the circulatory and respiratory systems to supply oxygen to skeletal muscle mitochondria for energy production during physical activity."