Evidence map›Paper›PMID 32032358›Full record

ArticlePloS one2020

Effects of moderate and high intensity isocaloric aerobic training upon microvascular reactivity and myocardial oxidative stress in rats.

Lorena Paes, Daniel Lima, Cristiane Matsuura, Maria das Graças de Souza, Fátima Cyrino, Carolina Barbosa, Fernanda Ferrão, Daniel Bottino, Eliete Bouskela, Paulo Farinatti

Abstract read
In one paragraph

Article in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
–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

5 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. 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.

Lorena PaesUniversity of Rio de Janeiro State, Rio de Janeiro, Laboratory for Clinical and Experimental Research on Vascular Biology, Rio de Janeiro, Brazil.
Daniel LimaUniversity of Rio de Janeiro State, Rio de Janeiro, Department of Pharmacology and Psychobiology, Rio de Janeiro, Brazil.ORCID 0000-0003-4930-0533
Cristiane MatsuuraUniversity of Rio de Janeiro State, Rio de Janeiro, Department of Pharmacology and Psychobiology, Rio de Janeiro, Brazil.
Maria das Graças de SouzaUniversity of Rio de Janeiro State, Rio de Janeiro, Laboratory for Clinical and Experimental Research on Vascular Biology, Rio de Janeiro, Brazil.
Fátima CyrinoUniversity of Rio de Janeiro State, Rio de Janeiro, Laboratory for Clinical and Experimental Research on Vascular Biology, Rio de Janeiro, Brazil.
Carolina BarbosaUniversity of Rio de Janeiro State, Rio de Janeiro, Laboratory for Clinical and Experimental Research on Vascular Biology, Rio de Janeiro, Brazil.
Fernanda FerrãoUniversity of Rio de Janeiro State, Rio de Janeiro, Laboratory for Clinical and Experimental Research on Vascular Biology, Rio de Janeiro, Brazil.
Daniel BottinoUniversity of Rio de Janeiro State, Rio de Janeiro, Laboratory for Clinical and Experimental Research on Vascular Biology, Rio de Janeiro, Brazil.
Eliete BouskelaUniversity of Rio de Janeiro State, Rio de Janeiro, Laboratory for Clinical and Experimental Research on Vascular Biology, Rio de Janeiro, Brazil.
Paulo FarinattiUniversity of Rio de Janeiro State, Rio de Janeiro, Laboratory of Physical Activity and Health Promotion, Rio de Janeiro, Brazil.ORCID 0000-0003-2463-1280

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Systemic and central cardiovascular adaptations may vary in response to chronic exercise performed with different intensities and volumes. This study compared the effects of aerobic training with different intensities but equivalent volume upon microvascular reactivity in cremaster muscle and myocardial biomarkers of oxidative stress in Wistar rats. After peak oxygen uptake (VO2peak) assessment, rats (n = 24) were assigned into three groups: moderate-intensity exercise training (MI); high-intensity exercise training (HI); sedentary control (SC). Treadmill training occurred during 4 weeks, with exercise bouts matched by the energy expenditure (3.0-3.5 Kcal). Microvascular reactivity was assessed in vivo by intravital microscopy in cremaster muscle arterioles, while biomarkers of oxidative stress and eNOS expression were quantified at left ventricle and at aorta, respectively. Similar increasing vs. sedentary control group (SC) occurred in moderate intensity training group (MI) and high-intensity training group (HI) for endothelium-dependent vasodilation (10-4M: MI: 168.7%, HI: 164.6% vs. SC: 146.6%, P = 0.0004). Superoxide dismutase (SOD) (HI: 0.13 U/mg vs. MI: 0.09 U/mg and SC: 0.06 U/mg; P = 0.02), glutathione peroxidase (GPX) (HI: 0.00038 U/mg vs. MI: 0.00034 U/mg and SC: 0.00024 U/mg; P = 0.04), and carbonyl protein content (HI: 0.04 U/mg vs. MI: 0.03 U/mg and SC: 0.01 U/mg; P = 0.003) increased only in HI. No difference across groups was detected for catalase (CAT) (P = 0.12), Thiobarbituric acid reactive substances (TBARS) (P = 0.38) or eNOS expression in aorta (P = 0.44). In conclusion, higher exercise intensity induced greater improvements in myocardium antioxidant defenses, while gains in microvascular reactivity appeared to rely more on exercise volume than intensity.

Indexed as

Oxidative StressVasodilationAnimalsAortaExercise TherapyGlutathione PeroxidaseHeart VentriclesMaleMicrovesselsMyocardial IschemiaNitric Oxide Synthase Type IIIOxygen ConsumptionPhysical Conditioning, AnimalProtein CarbonylationRatsRats, WistarGlutathione PeroxidaseNitric Oxide Synthase Type IIISuperoxide Dismutase

Identifiers

PMID32032358
PMCPMC7006926

What Socratic 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 Socratic graph.