 The goal of this study is to investigate the effectiveness of gait and balance training in pre frail subgroup diabetes patients. Our program is based on recommendations of Robertson et al.2002 and Page et al.2002 The investigators randomly assign patients in a control group no treatment or in a treatment group. The treatment program consists of two group sessions per week over 12 weeks. Patients were encouraged to perform specific home exercises. After this 12-week program, patients were asked to continue their exercises. The effect of the treatment will be evaluated after the treatment program and after a 6-month follow up. 