Document Detail

Effects of rehabilitation on chest wall volume regulation during exercise in COPD patients.
MedLine Citation:
PMID:  17107987     Owner:  NLM     Status:  MEDLINE    
In order to investigate underlying mechanisms, the present authors studied the effect of pulmonary rehabilitation on the regulation of total chest wall and compartmental (ribcage, abdominal) volumes during exercise in patients with chronic obstructive pulmonary disease. In total, 20 patients (forced expiratory volume in one second, mean +/- SEM 39 +/- 3% predicted) undertook high-intensity exercise 3 days x week(-1) for 12 weeks. Before and after rehabilitation, the changes in chest wall (cw) volumes at the end of expiration (EEV) and inspiration (EIV) were computed by optoelectronic plethysmography during incremental exercise to the limit of tolerance (W(peak)). Rehabilitation significantly improved W(peak) (57+/-7 versus 47+/-5 W). In the post-rehabilitation period and at identical work rates, significant reductions were observed in minute ventilation (35.1+/-2.7 versus 38.4+/-2.7 L x min(-1)), breathing frequency (26+/-1 versus 29+/-1 breaths x min(-1)) and EEV(cw) and EIV(cw) (by 182+/-79 and 136+/-37 mL, respectively). Inspiratory reserve volume was significantly increased (by 148+/-70 mL). Volume reductions were attributed to significant changes in abdominal EEV and EIV (by 163+/-59 and 125+/-27 mL, respectively). The improvement in W(peak) was similar in patients who progressively hyperinflated during exercise and those who did not (24 and 26%, respectively). In conclusion, pulmonary rehabilitation lowers chest wall volumes during exercise by decreasing the abdominal volumes. The improvement in exercise capacity following rehabilitation is independent of the pattern of exercise-induced dynamic hyperinflation.
O Georgiadou; I Vogiatzis; G Stratakos; A Koutsoukou; S Golemati; A Aliverti; C Roussos; S Zakynthinos
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-11-15
Journal Detail:
Title:  The European respiratory journal     Volume:  29     ISSN:  0903-1936     ISO Abbreviation:  Eur. Respir. J.     Publication Date:  2007 Feb 
Date Detail:
Created Date:  2007-01-31     Completed Date:  2007-04-20     Revised Date:  2013-05-23    
Medline Journal Info:
Nlm Unique ID:  8803460     Medline TA:  Eur Respir J     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  284-91     Citation Subset:  IM    
M. Simou and G.P. Livanos Laboratoris, Pulmonary Rehabilitation Centre, Department of Critical Care Medicine and Pulmonary Services, Evangelismos Hospital, Athens, Greece.
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MeSH Terms
Exercise Test
Exercise Therapy / methods*
Exercise Tolerance*
Middle Aged
Pulmonary Disease, Chronic Obstructive / rehabilitation*
Thoracic Wall
Tidal Volume
Treatment Outcome

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