Evidence map›Paper›PMID 27072546›Full record

Trial reportEuropean journal of applied physiology2016

The arterial baroreflex and inherent G tolerance.

Patrik Sundblad, Roger Kölegård, Pierre-Francois Migeotte, Quentin Delière, Ola Eiken

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in European journal of applied physiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
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

4 citing papers in PubMed.

  1. Review
  2. Review
  3. Review
  4. 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.

Patrik SundbladDepartment of Environmental Physiology, Swedish Aerospace Physiology Centre, School of Technology and Health, Royal Institute of Technology, Berzelius väg 13, 171 65, Solna, Sweden. patsu@kth.se.
Roger KölegårdDepartment of Environmental Physiology, Swedish Aerospace Physiology Centre, School of Technology and Health, Royal Institute of Technology, Berzelius väg 13, 171 65, Solna, Sweden.
Pierre-Francois MigeotteDepartment of Cardiology, Erasmus Hospital, Faculty of Medicine, Université libre de Bruxelles, Brussels, Belgium.
Quentin DelièreDepartment of Cardiology, Erasmus Hospital, Faculty of Medicine, Université libre de Bruxelles, Brussels, Belgium.
Ola EikenDepartment of Environmental Physiology, Swedish Aerospace Physiology Centre, School of Technology and Health, Royal Institute of Technology, Berzelius väg 13, 171 65, Solna, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeHigh G tolerance is based on the capacity to maintain a sufficient level of arterial pressure (AP) during G load; therefore, we hypothesized that subjects with high G tolerance (H group) would have stronger arterial baroreflex responses compared to subjects with low G tolerance (L group). The carotid baroreflex was evaluated using the neck pressure method (NP), which assesses open-loop responses.

methodsThe carotid baroreflex was tested in 16 subjects, n = 8 in the H and L group, respectively, in the supine and upright posture. Heart rate and AP were measured.

resultsThere were no differences between groups in the maximum slopes of the carotid baroreflex curves. However, the H group had a larger systolic and mean AP (SAP, MAP) increase to the initial hypotensive stimuli of the NP sequence in the upright position compared to the L group, 7.5 ± 6.6 vs 2.0 ± 2.4 and 4.1 ± 3.4 vs 1.1 ± 1.1 mmHg for SAP and MAP, respectively. Furthermore, the L group exhibited an increased latency between stimuli and response in AP in the upright compared to supine position, 4.1 ± 1.0 vs 3.1 ± 0.9 and 4.7 ± 1.1 vs 3.6 ± 0.9 s, for SAP and MAP. No differences in chronotropic responses were observed between the groups.

conclusionsIt is concluded that the capacity for reflexive vasoconstriction and maintained speed of the vascular baroreflex during orthostatic stress are coupled to a higher relaxed GOR tolerance.

Indexed as

HypergravityAdaptation, PhysiologicalAdultArterial PressureBaroreflexCarotid SinusHumansMaleOrthostatic IntolerancePostureAccelerationArterial pressureBaroreflexG tolerancePosture

Identifiers

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.