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Relevant bibliographies by topics / Breathing and heart rate[Hypoxia in man]

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Academic literature on the topic 'Breathing and heart rate[Hypoxia in man]'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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Journal articles on the topic "Breathing and heart rate[Hypoxia in man]"

1

Kimura, Hiroshi, Yoshitake Nishibayashi, Fumiaki Hayashi, Akio Yoshida, and Yoshiyuki Honda. "Influence of Controlled Breathing with Diminished Tidal Volume on Hypoxic Heart Rate Response in Man." Respiration 54, no. 2 (1988): 103–9. http://dx.doi.org/10.1159/000195508.

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2

Calbet, J. A. L., R. Boushel, G. Rådegran, H. Søndergaard, P. D. Wagner, and B. Saltin. "Determinants of maximal oxygen uptake in severe acute hypoxia." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 284, no. 2 (2003): R291—R303. http://dx.doi.org/10.1152/ajpregu.00155.2002.

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To unravel the mechanisms by which maximal oxygen uptake (V˙o 2 max) is reduced with severe acute hypoxia in humans, nine Danish lowlanders performed incremental cycle ergometer exercise to exhaustion, while breathing room air (normoxia) or 10.5% O2 in N2(hypoxia, ∼5,300 m above sea level). With hypoxia, exercise PaO2 dropped to 31–34 mmHg and arterial O2 content (CaO2 ) was reduced by 35% ( P < 0.001). Forty-one percent of the reduction in CaO2 was explained by the lower inspired O2 pressure (Pi O2 ) in hypoxia, whereas the rest was due to the impairment of the pulmonary gas exchange, as r

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Pal, A., M. A. Akey, R. Chatterjee, et al. "0556 Sex-Specific Relationship Between Anxiety and Autonomic Nervous System Dysfunction in Obstructive Sleep Apnea." Sleep 43, Supplement_1 (2020): A213. http://dx.doi.org/10.1093/sleep/zsaa056.553.

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Abstract Introduction Cardiovascular co-morbidities in obstructive sleep apnea (OSA) are hard to treat, perhaps due to autonomic nervous system (ANS) dysfunction. In OSA, intermittent hypoxia and poor tissue oxygen perfusion damage endothelial and nervous tissue, potentially underlying the dysfunction. Moreover, OSA is strongly associated with anxiety, which is independently associated with ANS dysfunction. We assessed sex-specific relationships between anxiety and cardiovascular markers of ANS dysfunction in OSA. Methods We studied people diagnosed with OSA and healthy controls. We collected

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Tomi, Satoko T., Ryoji Ide, and Jacopo P. Mortola. "Heart and breathing rate variability in the avian perinatal period: The chicken embryo as a model." Avian Biology Research 12, no. 1 (2019): 13–22. http://dx.doi.org/10.1177/1758155919832137.

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We used the chicken embryo at the internal pipping phase (just after the onset of pulmonary ventilation) as a model to quantify the changes in heart rate (fH), breathing frequency (fB) and their variabilities (heart rate variability and breathing rate variability) during air breathing (21% O2) and successive 20-min periods of 15%, 10% and 5% O2 and post-hypoxic recovery. For each condition, and for both fH and fB, variability was quantified by time-domain analysis with five standard criteria; these produced qualitatively similar results, which were combined into a single variability index. In

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5

DeBeck, Lindsay D., Stewart R. Petersen, Kelvin E. Jones, and Michael K. Stickland. "Heart rate variability and muscle sympathetic nerve activity response to acute stress: the effect of breathing." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 299, no. 1 (2010): R80—R91. http://dx.doi.org/10.1152/ajpregu.00246.2009.

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Previous research has suggested a relationship between low-frequency power of heart rate variability (HRV; LF in normalized units, LFnu) and muscle sympathetic nerve activity (MSNA). However, investigations have not systematically controlled for breathing, which can modulate both HRV and MSNA. Accordingly, the aims of this experiment were to investigate the possibility of parallel responses in MSNA and HRV (LFnu) to selected acute stressors and the effect of controlled breathing. After data were obtained at rest, 12 healthy males (28 ± 5 yr) performed isometric handgrip exercise (30% maximal v

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Hermand, Eric, François J. Lhuissier, Aurélien Pichon, Nicolas Voituron, and Jean-Paul Richalet. "Exercising in Hypoxia and Other Stimuli: Heart Rate Variability and Ventilatory Oscillations." Life 11, no. 7 (2021): 625. http://dx.doi.org/10.3390/life11070625.

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Periodic breathing is a respiratory phenomenon frequently observed in patients with heart failure and in normal subjects sleeping at high altitude. However, until recently, periodic breathing has not been studied in wakefulness and during exercise. This review relates the latest findings describing this ventilatory disorder when a healthy subject is submitted to simultaneous physiological (exercise) and environmental (hypoxia, hyperoxia, hypercapnia) or pharmacological (acetazolamide) stimuli. Preliminary studies have unveiled fundamental physiological mechanisms related to the genesis of peri

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7

Insalaco, Giuseppe, Salvatore Romano, Adriana Salvaggio, et al. "Blood pressure and heart rate during periodic breathing while asleep at high altitude." Journal of Applied Physiology 89, no. 3 (2000): 947–55. http://dx.doi.org/10.1152/jappl.2000.89.3.947.

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The ventilatory and arterial blood pressure (ABP) responses to isocapnic hypoxia during wakefulness progressively increased in normal subjects staying 4 wk at 5,050 m (Insalaco G, Romano S, Salvaggio A, Braghiroli A, Lanfranchi P, Patruno V, Donner CF, and Bonsignore G; J Appl Physiol 80: 1724–1730, 1996). In the same subjects ( n = 5, age 28–34 yr) and expedition, nocturnal polysomnography with ABP and heart rate (HR) recordings were obtained during the 1st and 4th week to study the cardiovascular effects of phasic (i.e., periodic breathing-dependent) vs. tonic (i.e., acclimatization-dependen

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8

Parkes, M. J. "Evaluating the Importance of the Carotid Chemoreceptors in Controlling Breathing during Exercise in Man." BioMed Research International 2013 (2013): 1–18. http://dx.doi.org/10.1155/2013/893506.

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Only the carotid chemoreceptors stimulate breathing during hypoxia in Man. They are also ideally located to warn if the brain’s oxygen supply falls, or if hypercapnia occurs. Since their discovery ~80 years ago stimulation, ablation, and recording experiments still leave 3 substantial difficulties in establishing how important the carotid chemoreceptors are in controlling breathing during exercise in Man: (i) they are in the wrong location to measure metabolic rate (but are ideally located to measure any mismatch), (ii) they receive no known signal during exercise linking them with metabolic r

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Siebenmann, Christoph, Camilla K. Ryrsø, Laura Oberholzer, et al. "Hypoxia-induced vagal withdrawal is independent of the hypoxic ventilatory response in men." Journal of Applied Physiology 126, no. 1 (2019): 124–31. http://dx.doi.org/10.1152/japplphysiol.00701.2018.

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Hypoxia increases heart rate (HR) in humans by sympathetic activation and vagal withdrawal. However, in anaesthetized dogs hypoxia increases vagal activity and reduces HR if pulmonary ventilation does not increase and we evaluated whether that observation applies to awake humans. Ten healthy males were exposed to 15 min of normoxia and hypoxia (10.5% O2), while respiratory rate and tidal volume were volitionally controlled at values identified during spontaneous breathing in hypoxia. End-tidal CO2 tension was clamped at 40 mmHg by CO2 supplementation. β-Adrenergic blockade by intravenous propr

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Engelen, Marielle, Janos Porszasz, Marshall Riley, Karlman Wasserman, Kazuhira Maehara, and Thomas J. Barstow. "Effects of hypoxic hypoxia on O2 uptake and heart rate kinetics during heavy exercise." Journal of Applied Physiology 81, no. 6 (1996): 2500–2508. http://dx.doi.org/10.1152/jappl.1996.81.6.2500.

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Engelen, Marielle, Janos Porszasz, Marshall Riley, Karlman Wasserman, Kazuhira Maehara, and Thomas J. Barstow. Effects of hypoxic hypoxia on O2 uptake and heart rate kinetics during heavy exercise. J. Appl. Physiol. 81(6): 2500–2508, 1996.—It is unclear whether hypoxia alters the kinetics of O2 uptake (V˙o 2) during heavy exercise [above the lactic acidosis threshold (LAT)] and how these alterations might be linked to the rise in blood lactate. Eight healthy volunteers performed transitions from unloaded cycling to the same absolute heavy work rate for 8 min while breathing one of three inspir

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Dissertations / Theses on the topic "Breathing and heart rate[Hypoxia in man]"

1

Khamnei, S. "Some factors affecting respiration in man." Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.258344.

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Conference papers on the topic "Breathing and heart rate[Hypoxia in man]"

1

Kocur, Dusan, Maria Svecova, and Jakub Demcak. "Estimation of Breathing Frequency and Heart Rate by Biometric UWB Radar." In 2018 IEEE International Conference on Systems, Man, and Cybernetics (SMC). IEEE, 2018. http://dx.doi.org/10.1109/smc.2018.00440.

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