Evidence map›Paper›PMID 20724565›Full record

Trial reportJournal of applied physiology (Bethesda, Md. : 1985)2010

Alpha-adrenergic control of blood flow during exercise: effect of sex and menstrual phase.

Jacqueline K Limberg, Marlowe W Eldridge, Lester T Proctor, Joshua J Sebranek, William G Schrage

Open access · greenAbstract readComparative StudyRandomized Controlled Trial
In one paragraph

Trial report in Journal of applied physiology (Bethesda, Md. : 1985), 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
9.8field-weighted citation impact, top 3% 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

41 citing papers in PubMed, 74 citations in OpenAlex.

  1. Trial
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  4. Impaired modulation of postjunctional αThe Journal of physiology · 2018
    Trial
  5. Vasoconstrictor responsiveness during hyperbaric hyperoxia in contracting human muscle.Journal of applied physiology (Bethesda, Md. : 1985) · 2013
    Trial
  6. Trial
  7. Article
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  9. Review
  10. Article
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  19. Hyperinsulinemia blunts sympathetic vasoconstriction: a possible role of β-adrenergic activation.American journal of physiology. Regulatory, integrative and comparative physiology · 2021
    Article
  20. Sex-related differences in rapid-onset vasodilation: impact of aging.Journal of applied physiology (Bethesda, Md. : 1985) · 2021
    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

5 authors at 2 institutions in 1 country.

Jacqueline K LimbergDepartment of Kinesiology, School of Education, University of Wisconsin, Madison, WI 53706, USA.
Marlowe W Eldridge
Lester T Proctor
Joshua J Sebranek
William G Schrage
UW Health University Hospital · USUniversity of Wisconsin–Madison · US

Funding

ZOLEDRONATE PREVENTS BONE LOSS IN OVARIECTOMIZED RHESUS MONKEYSP51RR000167 · NCRR · UNIVERSITY OF WISCONSIN-MADISON · PI WATKINS, DAVID I · 1985 to 2011
$106.7M
NCRR NIH HHS P51 RR000167NCRR NIH HHS RR-000167NHLBI NIH HHS L30 HL074824PHS HHS 1ULRR025011
6 · The paper itself

Abstract

Sex differences exist in autonomic control of the cardiovascular system. This study was designed to directly test sex or female menstrual phase-related differences in α-adrenergic control of blood flow during exercise. We hypothesized that women would exhibit reduced α-adrenergic vasoconstriction compared with men during exercise; in addition, women would constrict less during the early luteal than the early follicular phase of the female menses. Young men (n = 10) were studied once and women (n = 9) studied twice, once during the early follicular phase and once during the early luteal phase of female menses. We measured forearm blood flow (FBF; Doppler ultrasound of the brachial artery) during rest and steady-state dynamic exercise (15 and 30% of maximal voluntary contraction, 20 contractions/min). A brachial artery catheter was inserted for the local administration of α-adrenergic agonists [phenylephrine (PE; α(1)) or clonidine (CL; α(2))]. Blood flow responses to exercise [forearm vascular conductance (FVC)] were similar between all groups. At rest, infusion of PE or CL decreased FVC in all groups (40-60% reduction). Vasoconstriction to PE was abolished in all groups at 15 and 30% exercise intensity. Vasoconstriction to CL was reduced at 15% and abolished at 30% intensity in all groups; women had less CL-induced constriction during the early luteal than early follicular phase (P < 0.017, 15% intensity). These results indicate that vasodilator responses to forearm exercise are comparable between men and women and are achieved through similar paths of α-adrenergic vascular control at moderate intensities; this control may differ at low intensities specific to the female menstrual phase.

Indexed as

ExerciseMenstrual CycleVasoconstrictionVasodilationAdrenergic alpha-AgonistsAdultBlood Flow VelocityBrachial ArteryFemaleFollicular PhaseForearmHumansInfusions, Intra-ArterialLuteal PhaseMaleReceptors, Adrenergic, alphaAdrenergic alpha-AgonistsReceptors, Adrenergic, alphaVasoconstrictor AgentsVasodilator Agents

Identifiers

PMID20724565
PMCPMC2980375
OpenAlexW2080741046

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.