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Showing 1 to 18 of 18 for “"Cardiorespiratory responses"”.
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Characterisation of cardiorespiratory responses to electrically stimulated cycle training in paraplegia
… stimulated (FES) cycle training can improve the cardiorespiratory fitness of spinal cord injured (SCI) individuals, but the extent to which this can occur following high volume FES cycle endurance training is not known. The effect of training on aerobic endurance capacity, as determined by the …
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Hypothalamic and medullary modulation of cardiorespiratory responses to hypoxia and hypercapnia
… medullary and caudal hypothalamic neurons in the cardiorespiratory response to hypoxia and hypercapnia was examined. Initial experiments performed on anesthetized rats demonstrated that microinjection into the rostral ventrolateral medulla (VLM) of the excitatory amino acid receptor antagonist …
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Cardiorespiratory responses to altered rider position with conventional and aerodynamic handlebars
This investigation evaluated the cardiorespiratory responses to three rider positions while undergoing maximal cycle ergometry. The positions were determined by the position of the hands on the handlebars and the posture of the upper body: upright (UP), and drop position (DP) with conventional …
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Neurons projecting to the paraventricular nucleus of the hypothalamus are activated and contribute to cardiorespiratory responses to systemic acute hypoxia
… chemoreceptors contributes to homeostatic responses that maintain optimal blood gas levels, including oxygen and carbon dioxide. Brainstem neurons in the nTS and CVLM integrate and modulate chemosensory information and participate in control of cardiorespiratory function. These neurons have …
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Development of the neonatal rat as a model for Sudden Infant Death Syndrome: cardiorespiratory effects of ethanol
… blood gases. The second study identified the cardiorespiratory responses to inhaled CO2 challenge in juvenile rats, to determine the age corresponding to the age range of peak incidence of SIDS in human infants. Finally, utilizing the optimized juvenile rat model, the cardiorespiratory …
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The integration of neuromuscular, perceptual, and cardiorespiratory fatigue responses is modulated by high intensity interval training characteristics and blood flow restriction in males and females
… neuromuscular, perceptual, and cardiovascular responses to exercises performed in the severe domain. The HIIT characteristics such as the duration of work and recovery phases may modulate metabolic perturbations and influence psychophysiological responses determining exercise performance. One …
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The relative roles of portal hypertension and of cirrhosis in the pathogenesis of pulmonary lesions associated with chronic liver disease
… evidence of pulmonary hypertension. Abnormal cardiorespiratory responses to exercise occurred in three patients in the extrahepatic group. Two had associated low TLCOsb and one developed arterial desaturation on exercise. A similar pattern was seen in three patients with cirrhosis. All had low …
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Immune responses to next generation computer gaming
… Wii between people with varying degrees of cardiorespiratory fitness (fair and good). Measures were taken at baseline and then after participants had attended three 30 minute sessions each week for four weeks. Following a washout period, measures were taken again. More specifically, before …
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Cardiovascular Responses to Exercise: an Evaluation of the Effectiveness of a Brief Exposure to CPAP in Obstructive Sleep Apnea Patients
… based on comparison of morning questionnaire responses from the diagnostic PSG vs. CPAP titration. Statistical significance was not attained (p>0.05) upon analysis of the following parameters at 60% of the individuals maximum workload although there were changes in the mean values of the …
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Hormonal and metabolic responses to opioid antagonism during dynamic exercise : influence of exercise intensity
… peptides in substrate utilization and hormonal responses to exercise, eight trained cyclists completed two exercise trials at each of two distinct intensity/duration combinations. Briefly, cyclists completed two trials at 70% VO2max for 90 minutes and two trials at 90% VO2max until exhaustion. …
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The effects of amlodipine on exercise performance in mild to moderate essential hypertensives
… (SBP); ii) PSX at 75% VO₂ₘₐₓ to determine, cardiorespiratory responses, cardiac output (Q), blood lactate [La], free fatty acid [FFA], glucose [G] concentrations and ratings of perceived exertion (RPE), and iii) tests of isometric SMF including maximal voluntary contraction (MVC) and time to …
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Comparative effects of calcium channel antagonism and beta-1 selective blockade on exercise performance in physically active hypertensive patients
… consumption (VO₂max), maximal work load and cardiorespiratory responses to maximal exercise, ii) prolonged submaximal exercise for determination of exercise endurance, cardiorespiratory responses and ratings of perceived exertion (APE), and iii) short duration, high intensity exercise …
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Physiological responses to running on a land and anti-gravity treadmill
… of this study was to determine differences in cardiorespiratory responses between running on a land treadmill and on an anti-gravity treadmill (AGT) during 30 min of exercise followed by a run to volitional fatigue. Participants (n = 12; age = 22.0 ± 4.3 years; height = 171.3 ± 6.4 cm; weight = …
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A Comparison of Maximal Exercise Responses among Patients with a Total Artificial Heart, a Left Ventricular Assist Device, or Advanced Heart Failure
… of this study was to evaluate graded exercise responses to treadmill exercise in patients with a total artificial heat (SynCardia, Tucson, AZ). Additionally, this study sought to compare the exercise response in total artificial heart (TAH) patients to both advanced heart failure (HF) patients …
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The role of the endogenous opioid system in thermoregulation during exercise
… were recorded at one-minute intervals and cardiorespiratory parameters were measured during the test. Water loss was calculated from differences in nude body weight. In part II eight male subjects performed a graded maximal cycle ergometer test after receiving either placebo or 2mg naloxone …
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Physiological and biomechanical responses during high intensity upper body exercise
… PPO and that resistive load influences kinematic responses. In the second study, participants (n = 14) completed four separate high intensity trials (80%, 90%, 100% and 110% of peak minute power; PMP) from an incremental test for peak oxygen uptake (V 02peak) to volitional exhaustion (TMm) at a …
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Redox regulation of vascular NO bioavailability during hypoxia: implications for oxygen transport and exercise performance
… periods of normoxia on submaximal and maximal cardiorespiratory responses to exercise in hypoxia. Additionally, cerebral and muscle oxygenation was monitored throughout incremental cycling to exhaustion and changes in NO metabolites (NO3•, NO2• and RSNO) and CAMs (sICAM-1 and sVCAM-1) were …
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Physiological responses to very short duration hypoxic exposure and its use for improving sprint performance during intermittent exercise
… performance. Few studies have investigated the responses to very short duration altitude exposures and its effects on performance. Moreover, research into the benefits of altitude training for improving the restoration of sprint performance during high intensity intermittent sports remains …