Effect of three-day bed-rest on physiological responses to graded exercise in endurance athletes, body builders and sedentary men. - Smorawinski,J.; Nazar,K.; Kaciuba-Uscilko,H.; Kaminska,E.; Cybulski,E.; Kodrzycka,A.; Bicz,B.; Greeleaf,J.E. (J Appl Physiol, 2001)