Exercise Training and Fitness in Severe Obesity

For the Fatmax group each session will consist of 40-50 min of continuous exercise with an intensity that corresponded to the individual Fatmax (moderate intensity)

For HIIT group, each session will consist of 10x60-s cycling intervals interspersed with 60-s of recovery. The workloads will be selected to elicit a heart rate of \~90% maximal heart rate during the intervals with a pedal rate of 90-100 revolutions.min-1, whereas during recovery, the participants will be allowed to pedal against a resistance of 50 W