11,Beaver WL,Wasserman K,Whipp BJ.A new method for detecting anaerobic threshold by gas exchange.J Appl Physiol,1986;60(4):2020
22,Donahue M,Rogers RM,Wilson DO,et al.Oxygen consumption of respiratory muscles in normal and malnourished patients with chronic obstructive pulmonary disease.Am Rev Respir Dis,1989;140(3):385
33,Kyrousis D,MichaellP,Sarh EJ,et al.Exhaustive exercise slows inspiratory muscles relaxation rate in chronic obstructive pulmonary diseases.Am J of Respir and Crit Car Med,1996;153(6):787
44,Sue DY,Wasserman K,Moricca RB,et al.Metabolic acidosis during exercise in patients with chronic pulmonary disease.Chest,1988;94(6):931
55,Richard MO,John SF,Derrek GW.Right ventricular function at rest and during exercise in chronic obstructive pulmonary disease.Chest,1993;103(1):74