Acute hypothalamic-pituitary-adrenal responses to the stress of treadmill exercise: physiologic adaptations to physical training. - Luger,A.; Deuster,P.A.; Kyle,S.B.; Gallucci,W.T.; Montgomery,L.C.; Gold,P.W.; Loriaux,D.L.; Chrousos,G.P. (N Engl J Med, 1987)