Traditionally, ventilatory limitation to exercise is assessed by measuring the breathing reserve (BRR) [ie, the difference between minute ventilation at peak exercise and maximum voluntary ventilation measured at rest]. Recent studies have however, documented important abnormalities in ventilatory adaptation with a remarkable potential to limit exercise even in the presence of a normal BRR. Among these abnormalities is lung hyperinflation and expiratory flow limitation. This was documented by comparing tidal to maximum flow-volume loops (FVLs) collected throughout the test. In the present study, we wondered whether the advantages of using such a technique within the classic cardiopulmonary exercise test (CPET) might be obscured by the maneuvers interfering with the main functional parameters of the test, and eventually with interpretation of the CPET.
|Titolo:||Do maximum flow-volume loops collected during maximum exercise test alter the main cardiopulmonary parameters?|
AGOSTONI, PIERGIUSEPPE (Secondo)
|Parole Chiave:||Sensitivity and Specificity; Reference Values; Analysis of Variance; Heart Failure; Vital Capacity; Humans; Maximal Voluntary Ventilation; Aged; Exercise Test; Anaerobic Threshold; Physical Exertion; Adult; Case-Control Studies; Middle Aged; Exercise Tolerance; Lung Volume Measurements; Female; Male; Pulmonary Disease, Chronic Obstructive|
|Settore Scientifico Disciplinare:||Settore MED/10 - Malattie dell'Apparato Respiratorio|
|Data di pubblicazione:||feb-2009|
|Digital Object Identifier (DOI):||10.1378/chest.08-1477|
|Appare nelle tipologie:||01 - Articolo su periodico|