1Gosselink R, Troosters T, Decramer M. Distribution of muscle weakness in patients with stable chronic obstruc- tive pulmonary diseaserJ. J Cardiopulm Rehabil, 2000, 20(6) : 353-360.
2Sheel A W. Respiratory muscle training in healthy indi- viduals: physiological rationale and implications for exer- cise performance[J]. Sports Med, 2002,32 (9) : 567-581.
3Scherer T A, Spengler C M, Owassapian D, et ai. Re- spiratory muscle endurance training in chronic obstruc- tive pulmonary disease= impact on exercise capacity, dyspnea, and quality of life[J]. Am J Respir Crit Care Med, 2000,162 (5) : 1709-1714.
4Rochester D F, Braun N M. Determinants of maximal in- spiratory pressure in chronic obstructive pulmonary di sease[J. Am Rev Respir Dis,1985,132(1) :42-47.
5Pardy R L, Rivington R N, Despas P J, et al. The effects of inspiratory muscle training on exercise per- formance in chronic airflow limitation[J]. Am Rev Re- spir Dis,1981,123(4 Pt 1) :426-433.
6Montes de Oea M, Rassulo J, Celli B R. Respiratory muscle and cardiopulmonary function during exercise in very severe COPD[J. Am J Respir Crit Care Med, 1996, 154(5) : 1284-1289.
9Ramirez-Sarmiento A, Orozco-Levi M, Guell R, et al. Inspiratory muscle training in patients with chronic ob- structive pulmonary disease: structural adaptation and physiologic outcomesrJ. Am J Respir Crit Care Med, 2002,166(11) :1491-1497.
10Geddes E L, O'Brien K, Reid W D, et al. Inspiratory muscle training in adults with chronic obstructive pulmo nary disease: an update of a systematic review[-J. Respir Med,2008,102(12) : 1715-1729.
