Are exercise programmes effective for people with dementia?
The included trials were highly heterogeneous in terms of subtype and severity of participants' dementia, and type, duration and frequency of exercise. Several authors did not report, or did not describe adequately, the outcome data for each main outcome. High attrition rates, an imbalance of attrition between groups and unknown reasons for attrition and poor adherence (or no description) to the exercise programmes were also potential sources of bias in several of the included trials
In future, as the population ages, the number of people in our communities suffering with dementia will rise dramatically. This will not only affect the quality of life of people with dementia but also increase the burden on family caregivers, community care and residential care services. Exercise is one lifestyle factor identified as a potential means of reducing or delaying progression of the symptoms of dementia.