Effectiveness of a Personalized 6-month Programme on Frailty in Older Patients Treated for Bladder or Kidney Cancer.

This study is testing whether a personalized 6-month program focused on exercise and physical wellness can reduce frailty in older patients who have been treated surgically for bladder or kidney cancer. **You may be eligible if...** - You have been diagnosed with bladder or kidney cancer - You are scheduled for or have recently had surgery - You do not have severe cognitive problems that would prevent you from understanding the study - You are affiliated with a social security scheme - You have agreed to participate and signed a consent form **You may NOT be eligible if...** - Your surgery has already been completed before enrollment - You have significant health conditions that make physical activity unsafe (e.g., heart problems, severe breathing issues, disabling joint problems) - You are under legal guardianship or have restricted liberty - You are already receiving a physiotherapy prehabilitation program from a private physiotherapist Talk to your doctor to see if this trial is right for you.