[1] S Luca Hosp, IRCCS, Dept Cardiol, Cardiac Rehabil Unit,Ist Auxol Italiano, Piazzale Brescia 20, I-20149 Milan, Italy
[2] Univ Milano Bicocca, Postgrad Sch Sport Med & Phys Exercise, Milan, Italy
[3] Univ Milan, Postgrad Sch Sport Med, Milan, Italy
[4] Univ Milano Bicocca, Dept Med & Surg, Milan, Italy