22，Franisoa JA.Exercise testing in chronic heart failure.Am J Cardiol,1984,53:1447—1451.
33，Swedberg K,Gandersen T.The role of exercise testing in heart failure.J Cardiovasc Pharmacol,1993,22:S13—S17.
44，Weber KT,Janicki JS.Anaerobic thresh-old and aerobic capaity in the evaluation of chronic cardiac or circulatory failure.Advances in Cardiology,1986,35:79—87.
55，Jondeau G,Katz SD,Zohman L,et al.Active skeletal muscle mass and cardiopulmonary reserve:Failure to attain peak aerobic capacity during maximal bicycle exercise in patients with severe congestive heart failure.Circulation,1992,86:1351—1356.
66，Myer J,Gullestad L,Vagelos K,et al.Clinical hemodynamic and cardiopulmonary exercise test:determinants of surivao in patients referred for evaluation of heart failure.Ann Inter Med,1998,129:286—293.
77，Schaufelberger M,Swecberg K,Goteborg S.Is 6-mintue walk test of value in congestive heart failure?Am Heart J,1998,136:371—372.
88，Gualeni A,D'Alola A,Gintilini A,et al.Effects of maximally tolerated oral therapy on the six-minute walking test in patients with chronic congestive heart failure secondary to either ischemic or idiopathic dilated cardiomyopathy.Am J Cardiol,1998,81:1370—1372.
99，Roul G,Germain P,Bareiss P,et al.Dose the 6-minute walk test predict the prognosis in patients with NYHA class Ⅱ or Ⅲ chronic heart failure? Am Heart J,1998,136:449—457.
1010，Bittner V,Weiner D,Yusuf S,et al.Pred-iction of mortality and morbidity with 6-minute walk test in patients with left ventricular dysfuntion.JAMA,1993,270:1702—1707.
