Is physical activity or physical fitness more important in defining health benefits?

We addressed three questions: 1) Is there a dose-response relation between physical activity and health? 2) Is there a dose-response relation between cardiorespiratory fitness and health? 3) If both activity and fitness have a dose-response relation to health, is it possible to determine which exposure is more important?We identified articles by PubMed search (restricted from 1/1/90 to 8/25/00) using keywords related to physical activity,...