Results 241 to 250 of about 778,421 (286)

Association between the electromyographic fatigue threshold and ventilatory threshold.

Electromyography and clinical neurophysiology, 2009
The objective of this study is to verify the coincidence between the occurrence of the electromyographic fatigue threshold (EMGth) and the ventilatory threshold (Vth) in an incremental test in the cyclosimulator, as well as to compare the calculation of the RMS from the EMG signal using different time windows.
Camata, T. V., Lacerda, T. R., Altimari, Leandro Ricardo, Bortolloti, H., Fontes, E. B., Dantas, J. L., Nakamura, F. Y., Abrão, T., Chacon-Mikahil, M. P.T., Moraes, A. C.   +9 more
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Changes in Ventilatory Threshold at High Altitude

Medicine & Science in Sports & Exercise, 2006
To investigate the effects of prolonged hypoxia and antioxidant supplementation on ventilatory threshold (VT) during high-altitude (HA) exposure (4300 m).Sixteen physically fit males (25 +/- 5 yr; 77.8 +/- 8.5 kg) performed an incremental test to maximal exertion on a cycle ergometer at sea level (SL). Subjects were then matched on VO2peak, ventilatory
Subudi, Andrew W., Jacobs, Kevin A., Hagobian, Todd A., Fattor, Jill A., Muza, Stephen R., Fulco, Charles S., Cymerman, Allen, Friedlander, Anne L.   +7 more
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A Simplified Strategy for the Estimation of the Exercise Ventilatory Thresholds

Medicine & Science in Sports & Exercise, 2006
To analyze the limits of agreement between exercise ventilatory threshold values (VT1 and VT2) estimated from a combination of pulmonary gas exchange and ventilatory variables (cardiopulmonary exercise testing) and those derived from an alternative approach based on the ventilatory response only (V(E), ventilometry).Forty-two nontrained subjects (24 ...
J Alberto, Neder, Ricardo, Stein
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Ventilatory responses to inspiratory threshold loading in humans

Journal of Applied Physiology, 1990
Normal alveolar ventilation tends to be maintained during external mechanical loading. The precise manner by which this occurs is unclear but may involve intrinsic mechanisms related to the muscular pump, neural influences, and chemoreceptor control. Recent observations suggest that submaximal threshold loads may result in hyperventilation.
J, Yanos, A, Banner, R, Stanko, S, Gentry, K, Greenawalt   +4 more
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Ventilatory Thresholds during a Graded Exercise Test

Respiration, 2009
38 healthy male volunteers were administered a graded exercise test during which selected respiratory gas exchange variables were monitored. In each case, two distinct ventilatory thresholds were observed. The first threshold was detected by the power output at which the V_E/VO₂ ratio and FEO<sub>2</
Y, Bhambhani, M, Singh
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Effect of acute normobaric hypoxia on the ventilatory threshold

European Journal of Applied Physiology, 2014
This study investigated the response of the ventilatory threshold (VT) to acute normobaric hypoxia and compared the agreement between software-based algorithms which use automatic detection to identify the VT. Results were used to examine whether the VT can be used as a physiological parameter to prescribe and monitor exercise intensity in hypoxic ...
Carla A, Gallagher, Mark E T, Willems, Mark P, Lewis, Stephen D, Myers   +3 more
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Detection of ventilatory threshold by an automatic parabolic model

2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2008
This work aims at presenting a method for automatic detection of the ventilatory threshold by modeling ventilatory equivalent of oxygen by a parabolic function. Thirty healthy male subjects were submitted to a single maximal oxygen uptake test, being monitored the ventilatory gas exchange signals. Ventilatory threshold by visual inspection, automatic v-
Roger G T, Mello, Igor R T, Jesus, Reinaldo F, Buarque, Liliam F, Oliveira, Jurandir, Nadal   +4 more
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Target RPE at the Ventilatory Threshold

2014
The ventilatory threshold (VT) is an important physiological marker of the exercise intensity at which an individual can sustain performance for a prolonged period, and therefore is an important determinant of aerobic exercise performance capacity. Determination of the exercise training intensity equivalent to the VT is an important measure for both ...
Luke Haile, Michael Gallagher, Robert J. Robertson   +2 more
openaire   +1 more source

Ventilatory response to carbon dioxide and apnoeic thresholds

Respiration Physiology, 1981
In 11 cats anaesthetized with chloralose-urethane, the steady state ventilation during hyperoxia was measured as a function of the central PaCO2 (PacCO2) and peripheral PaCO2 (PapCO2) using the technique of artificial ponto-medullary perfusion. The ventilatory response was described by VE = Sc . PacCO2 + Sp .
J, De Goede, A, Berkenbosch, C N, Olievier, P H, Quanjer   +3 more
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Using smoothing splines for detecting ventilatory thresholds

Medicine & Science in Sports & Exercise, 1990
A recently developed nonparametric regression technique, called a polynomial smoothing spline, is presented for detecting the ventilatory threshold (VT) and respiratory compensation (RC) points from gas exchange response data taken during an incremental exercise test.
D L, Sherrill, S J, Anderson, G, Swanson
openaire   +2 more sources