Bladder Cancer and ExeRcise Training During IntraVesical ThErapy

The intervention will be performed on a treadmill and will include a warm-up and cool-down at 50-60% and 40% of the VO2peak respectively, for up to five minutes. The HIIT protocol will be 4x4, which consists of four bouts of four minutes at a workload corresponding to vigorous intensity (75-95% of the baseline and 6-week VO2peak) alternating with three minutes of recovery intervals at 40% of the VO2peak. The exercise session will last 35 minutes and include 16 minutes of high intensity exercise.