Exercise types varied and included endurance, strength, and balance/coordination training; and functional exercise. Time, frequency and duration varied widely between trials. Exercises were performed either individually or in groups with or without a professional supervisor. Many interventions were multimodal. Trials were conducted in a number of countries including the UK, France, Germany and the USA, where reported. Participants had a mean Mini-Mental-State-Examination Score (MMSE) of 3 to 24, where reported. The mean age of participants was 74 to 87, where reported. Most participants in the trials were women. Trials were published between 1994 and 2010.
Multiple reviewers (exact number unclear) selected the studies for inclusion.