Exercise for depression

BackgroundDepression is a common and important cause of morbidity and mortality worldwide. It is commonly treated with anti depressants and/or psychological therapy, but some people prefer alternative approaches such as exercise. There are a number of theoretical reasons why exercise may improve depression. This is an update of a review first published in 2009.ObjectivesTo determine the effectiveness of exercise in the treatment of depression in adults compared with no treatment or a comparator intervention.