Associations of Fitness, Fatness Indices and Fit–Fat Index Variants With Cardiovascular and All‐Cause Mortality in Men

Fit–Fat Index (FFI), defined as the ratio of cardiorespiratory fitness (CRF) to waist‐to‐height ratio (WHtR), combines measures of fitness and fatness, and may offer a more accurate assessment of cardiometabolic risk than either component alone. The prospective associations of CRF, fatness indices, and mortality were examined.