Relationship between physical activity and aerobic fitness.

Physical activity (PA) and cardiorespiratory fitness (CRF) are indicators of cardiovascular disease risk and all-cause mortality. Many health advocates use PA and CRF interchangeably. However, quantification of the relationship between objectively measured PA and CRF is rarely found.The association between objectively measured PA volume (PAv), intensity (PAi), and CRF indexed by V.O(2max) was assessed in a cross-sectional study; 275 women...