S. Pedrosa

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The influence of a very fast ramp rate on cardiopulmonary variables at ventilatory threshold and peak exercise during a maximal arm crank exercise test has not been extensively studied. Considering that short arm crank tests could be sufficient to achieve maximal oxygen consumption (VO₂), it would be of practical interest to explore this possibility. Thus,(More)
The present work quantifies, through principal components analysis (PCA) the relationships among the variability of breath-by-breath ventilatory parameters [minute-ventilation (VE), tidal volume (Vt), and respiratory rate (FR)] during a maximal progressive exercise test. The results show that the first and second eigenvalues of the covariant matrix contains(More)
Renata R. T. Castro, Sabrina Pedrosa, Antonio C. L. Nóbrega I Exercise Physiology Laboratory, National Institute of Traumatology and Orthopedics, Rio de Janeiro, Brazil. II Clinical and Experimental Pathophysiology, Rio de Janeiro State University, Rio de Janeiro, Brazil. III Department of Physiology and Pharmacology, Fluminense Federal University, Niteroi,(More)
OBJECTIVE This study aimed to compare respiratory responses, focusing on the time-domain variability of ventilatory components during progressive cardiopulmonary exercise tests performed on cycle or arm ergometers. METHODS The cardiopulmonary exercise tests were conducted on twelve healthy volunteers on either a cycle ergometer or an arm ergometer(More)
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