A study released in Translational Psychiatry reports that “Although previous research has supported the individual beneficial effects of aerobic exercise and meditation for depression, these findings indicate that a combination of the two may be particularly effective in increasing cognitive control processes and decreasing ruminative thought patterns.”
Alderman, B; Olson, R; Brush, C; Shors, C; MAP training: combining meditation and aerobic exercise reduces depression and rumination while enhancing synchronized brain activity. Translational Psychiatry. (2016) 6, e726; doi:10.1038/tp.2015.225. Published online 2 February 2016
Meditation Plus Running as a Treatment for Depression (New York Times)