BDNF and stroke disorder: Although there is still a lack of studies evaluating BDNF concentrations following exercise in subjects post-stroke, evidence based on stroke-induced animal models suggests a relationship between aerobic exercise training and an increase in BDNF concentrations (14–16) Furthermore, recent studies have also measured BDNF concentrations following functional task training in stroke-induced animals models, such as skilled reach training, in order to further clarify the mechanisms by which these interventions would induce recovery (17, 18).