Evidence map›Paper›PMID 25934093›Full record

ArticleAmerican journal of physiology. Heart and circulatory physiology2015

Local temperature-sensitive mechanisms are important mediators of limb tissue hyperemia in the heat-stressed human at rest and during small muscle mass exercise.

Scott T Chiesa, Steven J Trangmar, Kameljit K Kalsi, Mark Rakobowchuk, Devendar S Banker, Makrand D Lotlikar, Leena Ali, José González-Alonso

Open access · hybridAbstract read
In one paragraph

Article in American journal of physiology. Heart and circulatory physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 8% 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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 59 citations in OpenAlex.

  1. Pooled it
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  3. Heat therapy promotes the expression of angiogenic regulators in human skeletal muscle.American journal of physiology. Regulatory, integrative and comparative physiology · 2016
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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

8 authors at 2 institutions in 1 country.

Scott T ChiesaCentre for Sports Medicine and Human Performance, Brunel University London, Uxbridge, UK; and.
Steven J TrangmarCentre for Sports Medicine and Human Performance, Brunel University London, Uxbridge, UK; and.
Kameljit K KalsiCentre for Sports Medicine and Human Performance, Brunel University London, Uxbridge, UK; and.
Mark RakobowchukCentre for Sports Medicine and Human Performance, Brunel University London, Uxbridge, UK; and.
Devendar S BankerCentre for Sports Medicine and Human Performance, Brunel University London, Uxbridge, UK; and Department of Anaesthetics, Ealing Hospital NHS Trust, Southall, UK.
Makrand D LotlikarCentre for Sports Medicine and Human Performance, Brunel University London, Uxbridge, UK; and Department of Anaesthetics, Ealing Hospital NHS Trust, Southall, UK.
Leena AliCentre for Sports Medicine and Human Performance, Brunel University London, Uxbridge, UK; and Department of Anaesthetics, Ealing Hospital NHS Trust, Southall, UK.
José González-AlonsoCentre for Sports Medicine and Human Performance, Brunel University London, Uxbridge, UK; and j.gonzalez-alonso@brunel.ac.uk.
Brunel University of London · GBEaling Hospital NHS Trust · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Limb tissue and systemic blood flow increases with heat stress, but the underlying mechanisms remain poorly understood. Here, we tested the hypothesis that heat stress-induced increases in limb tissue perfusion are primarily mediated by local temperature-sensitive mechanisms. Leg and systemic temperatures and hemodynamics were measured at rest and during incremental single-legged knee extensor exercise in 15 males exposed to 1 h of either systemic passive heat-stress with simultaneous cooling of a single leg (n = 8) or isolated leg heating or cooling (n = 7). Systemic heat stress increased core, skin and heated leg blood temperatures (Tb), cardiac output, and heated leg blood flow (LBF; 0.6 ± 0.1 l/min; P < 0.05). In the cooled leg, however, LBF remained unchanged throughout (P > 0.05). Increased heated leg deep tissue blood flow was closely related to Tb (R(2) = 0.50; P < 0.01), which is partly attributed to increases in tissue V̇O2 (R(2) = 0.55; P < 0.01) accompanying elevations in total leg glucose uptake (P < 0.05). During isolated limb heating and cooling, LBFs were equivalent to those found during systemic heat stress (P > 0.05), despite unchanged systemic temperatures and hemodynamics. During incremental exercise, heated LBF was consistently maintained ∼ 0.6 l/min higher than that in the cooled leg (P < 0.01), with LBF and vascular conductance in both legs showing a strong correlation with their respective local Tb (R(2) = 0.85 and 0.95, P < 0.05). We conclude that local temperature-sensitive mechanisms are important mediators in limb tissue perfusion regulation both at rest and during small-muscle mass exercise in hyperthermic humans.

Indexed as

Body Temperature RegulationHemodynamicsMuscle ContractionThermosensingAdultBlood Flow VelocityHeat Stress DisordersHumansHyperemiaMaleMuscle, SkeletalRegional Blood FlowTime FactorsYoung Adultexerciseheat stressleg blood flow

Identifiers

PMID25934093
PMCPMC4504966
OpenAlexW1995084668

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.