- Exercise-induced and nitroglycerin-induced myocardial preconditioning improves hemodynamics in patients with angina. Crisafulli, A., Melis, F., Tocco, F., Santoboni, U.M., Lai, C., Angioy, G., Lorrai, L., Pittau, G., Concu, A., Pagliaro, P. Am. J. Physiol. Heart Circ. Physiol. (2004)