Toward Exercise Guidelines for Optimizing Fat Oxidation During Exercise in Obesity: A Systematic Review and Meta-Regression

ConclusionRelative heart rate rather than relative oxygen uptake should be used for establishing FATmax reference values in patients with obesity. A heart rate of 61 –66% HRpeak should be recommended to patients with  >  35% body fat while a heart rate of 57–64% HRpeak should be recommended to patients with body fat  <  35%. Moreover, training volume must be higher in adults to achieve a similar fat oxidation compared with adolescents whereas exercising on a treadmill requires a lower training volume to achieve significant fat oxidation in comparison with stationary cycling.
Source: Sports Medicine - Category: Sports Medicine Source Type: research