Evidence map›Paper›PMID 32502375›Full record

ArticleAmerican journal of physiology. Heart and circulatory physiology2020

Mechanisms of sympathetic restraint in human skeletal muscle during exercise: role of α-adrenergic and nonadrenergic mechanisms.

Alexander B Hansen, Gilbert Moralez, Steven A Romero, Christopher Gasho, Michael M Tymko, Philip N Ainslie, Florian Hofstätter, Simon L Rainer, Justin S Lawley, Christopher M Hearon

Open access · bronzeAbstract read
In one paragraph

Article in American journal of physiology. Heart and circulatory physiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.8field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 18 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Endogenous muscarinic acetylcholine receptor signaling blunts αAmerican journal of physiology. Regulatory, integrative and comparative physiology · 2025
    Article
  5. Review
  6. Article
  7. Adrenergic control of skeletal muscle blood flow during chronic hypoxia in healthy males.American journal of physiology. Regulatory, integrative and comparative physiology · 2023
    Article
  8. Article
  9. Article
  10. Article
  11. Matching of OFrontiers in physiology · 2022
    Review
  12. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 6 institutions in 3 countries.

Alexander B HansenDepartment of Sport Science, University of Innsbruck, Innsbruck, Austria.ORCID 0000-0001-6747-3708
Gilbert MoralezDepartment of Applied Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas.
Steven A RomeroUniversity of North Texas Health Science Center, Fort Worth, Texas.
Christopher GashoDivision of Pulmonary and Critical Care, Department of Medicine, University of Loma Lida, Loma Lida, California.
Michael M TymkoCentre of Heart, Lung, and Vascular Health, School of Health and Exercise Sciences, University of British Columbia-Okanagan, Kelowna, British Columbia, Canada.
Philip N AinslieCentre of Heart, Lung, and Vascular Health, School of Health and Exercise Sciences, University of British Columbia-Okanagan, Kelowna, British Columbia, Canada.
Florian HofstätterDepartment of Sport Science, University of Innsbruck, Innsbruck, Austria.
Simon L RainerDepartment of Sport Science, University of Innsbruck, Innsbruck, Austria.ORCID 0000-0002-5158-6625
Justin S LawleyDepartment of Sport Science, University of Innsbruck, Innsbruck, Austria.ORCID 0000-0003-2166-7966
Christopher M HearonInstitute for Exercise and Environmental Medicine, Texas Health Presbyterian Dallas, Dallas, Texas.ORCID 0000-0002-6561-3532
Universität Innsbruck · ATUniversity of British Columbia · CALoma Linda University · USTexas Health Dallas · USThe University of Texas Southwestern Medical Center · USUniversity of North Texas · US

Funding

HHS | National Institutes of Health (NIH) NIH 1F32HL1377285-0
6 · The paper itself

Abstract

Sympathetic vasoconstriction is mediated by α-adrenergic receptors under resting conditions. During exercise, increased sympathetic nerve activity (SNA) is directed to inactive and active skeletal muscle; however, it is unclear what mechanism(s) are responsible for vasoconstriction during large muscle mass exercise in humans. The aim of this study was to determine the contribution of α-adrenergic receptors to sympathetic restraint of inactive skeletal muscle and active skeletal muscle during cycle exercise in healthy humans. In ten male participants (18-35 yr), mean arterial pressure (intra-arterial catheter) and forearm vascular resistance (FVR) and conductance (FVC) were assessed during cycle exercise (60% total peak workload) alone and during combined cycle exercise + handgrip exercise (HGE) before and after intra-arterial blockade of α- and β-adrenoreceptors via phentolamine and propranolol, respectively. Cycle exercise caused vasoconstriction in the inactive forearm that was attenuated ~80% with adrenoreceptor blockade (%ΔFVR, +81.7 ± 84.6 vs. +9.7 ± 30.7%;

Indexed as

ExerciseAdrenergic alpha-AntagonistsAdrenergic beta-AntagonistsAdultBlood PressureHumansMaleMuscle ContractionMuscle, SkeletalPhentolaminePropranololRegional Blood FlowSympathetic Nervous SystemVasoconstrictionVasodilationAdrenergic alpha-AntagonistsAdrenergic beta-AntagonistsPhentolaminePropranololcardiovascular reflexexercisesympathetic nervous systemα-adrenergic receptors

Identifiers

PMID32502375
PMCPMC7474447
OpenAlexW3033518831

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.