Inclusion Criteria:  Age 70 years or older Community-dwellers (i.e. not living in a skilled care or other institution) Able to walk at least 5 meters with or without a walking aid but without the assistance of another person Normal (habitual, self-paced) walking speed 80-100 cm/s Montreal Cognitive Assessment score 18 or more points lnformed Consent as documented by signature  Exclusion Criteria:  Clinically significant neurologic or musculoskeletal diseases which severely affect walking, e.g. advanced Parkinson's disease or hemiplegia Other clinically significant non-stable medical or psychiatric conditions (e.g., renal failure, hepatic dysfunction, cardiovascular disease, advanced chronic pulmonary disease, psychosis, schizoaffective disorder, etc.) that, according to the study investigators, could endanger the participant and/or negatively affect study adherence Terminal illness Fracture (exception: teeth) in the previous 3 months Blindness lnability to follow the procedures of the study, e.g. due to language problems, psychological disorders, dementia, etc. of the participant Previous participation in the Power Centering for Seniors program Current participation in another (non-observational) clinical study