Inclusion Criteria:  Adults aged 18 years or above Diabetes mellitus Non-surgical ulcer located distal to the malleoli Willingness to participate in a 12-week supervised exercise therapy intervention twice a week Prescribed with a therapeutic shoe, orthopaedic specialist shoe from the outpatient clinic or a specialized podiatrist.  Exclusion Criteria:  Dementia or other reasons that cause inability to give informed consent People that are wheelchair-bound People with a prescribed cast or walker boot Unable to understand Danish. Diagnosed with or awaiting evaluation of suspected acute phase Charcot arthropathy or osteomyelitis