Research Impact: Evidence regarding physical benefits of non-traditional exercise modes is growing  but comparatively less evidence is available for mental health benefits of non-traditional exercise modes  particularly Pilates Thus  this meta-analysis included eight articles published prior to August 2017 that included allocation to Pilates or non-active control and a measure of anxiety and/or depressive symptoms at baseline and after Pilates in order to estimate the population effect size for Pilates effects on mental health outcomes