Effects of aerobic exercise training on heart rate variability during wakefulness and sleep and cardiorespiratory responses of young and middle-aged healthy men. - Catai,A.M.; Chacon-Mikahil,M.P.; Martinelli,F.S.; Forti,V.A.; Silva,E.; Golfetti,R.; Martins,L.E.; Szrajer,J.S.; Wanderley,J.S.; Lima-Filho,E.C.; Milan,L.A.; Marin-Neto,J.A.; et al. (Braz J Med Biol Res, 2002)