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Title: Comprehensive directed breathing retraining improves exertional dyspnea for men with spirometry within normal limits
Authors: Gimenez, Manuel
Servera, Emilio
Abril, Encarnacion
Saavedra Santana, Pedro 
Darias, Maria
Gomez, Arturo
Hannhart, Bernard
UNESCO Clasification: 240401 Bioestadística
32 Ciencias médicas
241117 Fisiología de la respiración
Keywords: Respiratory therapy
Diaphragmatic breathing
Dyspnea index
Lung function tests
Issue Date: 2010
Journal: American Journal of Physical Medicine and Rehabilitation 
Abstract: Objective: To compare the effects of comprehensive directed breathing retraining with traditional diaphragmatic breathing on male smokers with exertional dyspnea but normal spirometry.Design: This is a prospective randomized clinical trial in an exercise laboratory at a university hospital. Twenty-four non-medicated exertional dyspnea subjects were randomly assigned to experimental (comprehensive directed breathing) and control (traditional diaphragmatic breathing) groups. Forty-four physiologic parameters associated with exertional dyspnea were studied before and after interventions for both groups at rest and at 40-W constant exercise for 10 mins. The interventions for both groups included diaphragmatic breathing exercises, walking, and arm exercises for 90 mins, 5 days/wk for 4 wks. In addition, the comprehensive directed breathing group was taught the anatomy and physiology of ventilation; they observed their ventilatory dyssynchrony in a mirror; they were shown their ventilatory rhythm on a spirogram; diaphragmatic movement was demonstrated in an educational movie; and vernal feedback was used to correct respiratory asynchrony.Results: We compared the relative changes of lung function parameters before and after intervention for each group. The comprehensive directed breathing group improvements were significantly greater (P < 0.05) than those of traditional diaphragmatic breathing for 34 of 44 lung function parameters.Conclusions: Comprehensive directed breathing training improved exertional dyspnea, Dyspnea Index, and some clinical and functional parameters significantly more than traditional diaphragmatic breathing training.
ISSN: 0894-9115
DOI: 10.1097/PHM.0b013e3181bc0cf4
Source: American Journal of Physical Medicine and Rehabilitation [ISSN 0894-9115], v. 89 (2), p. 90-98, (Febrero 2010)
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