Trial reportThe Journal of physiology2008
Exercise intensity-dependent contribution of beta-adrenergic receptor-mediated vasodilatation in hypoxic humans.
Trial report in The Journal of physiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
47 citing papers in PubMed, 61 citations in OpenAlex.
- β-Adrenergic receptors mediate sex differences in vasodilation but not sympathetic-mediated vasoconstriction during hypoxia.American journal of physiology. Heart and circulatory physiology · 2025Trial
- Rho-kinase inhibition improves haemodynamic responses and circulating ATP during hypoxia and moderate intensity handgrip exercise in healthy older adults.The Journal of physiology · 2022Trial
- Impaired modulation of postjunctional αThe Journal of physiology · 2018Trial
- Acute dietary nitrate supplementation enhances compensatory vasodilation during hypoxic exercise in older adults.Journal of applied physiology (Bethesda, Md. : 1985) · 2015Trial
- Dietary nitrate reduces muscle metabolic perturbation and improves exercise tolerance in hypoxia.The Journal of physiology · 2011Trial
- Adenosine receptor antagonist and augmented vasodilation during hypoxic exercise.Journal of applied physiology (Bethesda, Md. : 1985) · 2009Trial
- Sex-related differences in the peripheral vascular response to hypoxia: Implications in health and relevance for obstructive sleep apnoea.Experimental physiology · 2026Review
- The effect of sex on the isolated and combined α- and β-adrenergic control of blood flow during handgrip in adults at high altitude: An exploratory study.Physiological reports · 2026Article
- Role of overweight and obesity on vascular responses to the cold pressor test and hypoxia in women.Journal of applied physiology (Bethesda, Md. : 1985) · 2025Article
- Hemorrhage at high altitude: impact of sustained hypobaric hypoxia on cerebral blood flow, tissue oxygenation, and tolerance to simulated hemorrhage in humans.European journal of applied physiology · 2024Article
- Cardiovascular physiology and pathophysiology at high altitude.Nature reviews. Cardiology · 2024Review
- Hypoventilation training including maximal end-expiratory breath holding improves the ability to repeat high-intensity efforts in elite judo athletes.Frontiers in physiology · 2024Article
- Physiological Responses to Supramaximal Running Exercise with End-Expiratory Breath Holding up to the Breaking Point.Journal of human kinetics · 2024Article
- Application of blood flow restriction in hypoxic environment augments muscle deoxygenation without compromising repeated sprint exercise performance.Experimental physiology · 2023Article
- Neuromuscular and Muscle Tissue Hemodynamic Responses When Exposed to Normobaric Hypoxia during Lower-Body Fatiguing Muscle Actions.Journal of musculoskeletal & neuronal interactions · 2023Article
- On the haemodynamic consequence of the chemoreflex and muscle mechanoreflex interaction in women and men: two tales, one story.The Journal of physiology · 2022Article
- Caffeine, genetic variation and anaerobic performance in male athletes: a randomized controlled trial.European journal of applied physiology · 2021Article
- Assessment of resistance vessel function in human skeletal muscle: guidelines for experimental design, Doppler ultrasound, and pharmacology.American journal of physiology. Heart and circulatory physiology · 2020Review
- Inhibition of NaThe Journal of physiology · 2018Article
- Reliability of forearm oxygen uptake during handgrip exercise: assessment by ultrasonography and venous blood gas.Physiological reports · 2018Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 2 institutions in 1 country.
Funding
Abstract
We previously reported that hypoxia-mediated reductions in alpha-adrenoceptor sensitivity do not explain the augmented vasodilatation during hypoxic exercise, suggesting an enhanced vasodilator signal. We hypothesized that beta-adrenoceptor activation contributes to augmented hypoxic exercise vasodilatation. Fourteen subjects (age: 29 +/- 2 years) breathed hypoxic gas to titrate arterial O(2) saturation (pulse oximetry) to 80%, while remaining normocapnic via a rebreath system. Brachial artery and antecubital vein catheters were placed in the exercising arm. Under normoxic and hypoxic conditions, baseline and incremental forearm exercise (10% and 20% of maximum) was performed during control (saline), alpha-adrenoceptor inhibition (phentolamine), and combined alpha- and beta-adrenoceptor inhibition (phentolomine/propranolol). Forearm blood flow (FBF), heart rate, blood pressure, minute ventilation, and end-tidal CO(2) were determined. Hypoxia increased heart rate (P < 0.05) and minute ventilation (P < 0.05) at rest and exercise under all drug infusions, whereas mean arterial pressure was unchanged. Arterial adrenaline (P < 0.05) and venous noradrenaline (P < 0.05) were higher with hypoxia during all drug infusions. The change (Delta) in FBF during 10% hypoxic exercise was greater with phentolamine (Delta306 +/- 43 ml min(-1)) vs. saline (Delta169 +/- 30 ml min(-1)) or combined phentolamine/propranolol (Delta213 +/- 25 ml min(-1); P < 0.05 for both). During 20% hypoxic exercise, DeltaFBF was greater with phentalomine (Delta466 +/- 57 ml min(-1); P < 0.05) vs. saline (Delta346 +/- 40 ml min(-1)) but was similar to combined phentolamine/propranolol (Delta450 +/- 43 ml min(-1)). Thus, in the absence of overlying vasoconstriction, the contribution of beta-adrenergic mechanisms to the augmented hypoxic vasodilatation is dependent on exercise intensity.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.