"The effect of meditation on shooting performance", by Solberg EE, Berglund KA, Engen, Ekeberg, Loeb M. British Journal of Sports Medicine 1996; 30:1-5
Erik E. Solberg et al., "Hemodynamic Changes During Long Meditation", in Journal Applied Psychophysiology and Biofeedback, Publisher Springer Netherlands ISSN 1090-0586 (Print), 1573-3270 Online.
ingentaconnect.com
Solberg E.E., Halvorsen R., Holen A, in Stress and Health, Volume 16, Number 3, April 2000, pp. 185–190, Publisher: John Wiley & Sons, Ltd, Effects of meditation on immune cells