S. Colcombe and A. F. Kramer, «Fitness Effects on the Cognitive Function of Older Adults: A Meta-Analytic Study», Psychological Science 14 (2003): 125–130. См. также: A. F. Kramer and К. I. Erickson, «Capitalizing on Cortical Plasticity: Influence of Physical Activity on Cognition and Brain Function,» Trends in Cognitive Sciences 11 (2007): 342–348.