take a look at this Gustafsson, T., Puntschart, A., Kaijser, L., Jansson, E., & Sundberg, C. J. (1999). Exercise-induced expression of angiogenesis-related transcription and growth factors in human skeletal muscle. American Journal of Physiology-Heart and Circulatory Physiology, 276(2), H679-H685.
Verburgh L, Königs M, Scherder EJA, Oosterlaa J. Physical exercise and executive functions in preadolescent children, adolescents and young adults: a meta-analysis. Br J Sports Med doi:10.1136/bjsports-2012-091441.