Evidence map›Paper›PMID 33675423›Full record

ArticleEuropean journal of applied physiology2021

Changes in pulmonary and plasma oxidative stress and inflammation following eccentric and concentric cycling in stable COPD patients.

Denisse Valladares-Ide, Maria José Bravo, Ana Carvajal, Oscar F Araneda, Marcelo Tuesta, Alvaro Reyes, Reyna Peñailillo, Luis Peñailillo

Abstract read
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In one paragraph

Article in European journal of applied physiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

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

  1. Pooled it
  2. Trial
  3. Trial
  4. Review
  5. Exercise Prescription Training in Chronic Obstructive Pulmonary Disease: Benefits and Mechanisms.International journal of chronic obstructive pulmonary disease · 2025
    Review
  6. Article
  7. Review
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.

Denisse Valladares-IdeInstituto de Ciencias de la Salud, Universidad de O'Higgins, Rancagua, Chile.
Maria José BravoExercise Science Laboratory, Faculty of Medicine, School of Kinesiology, Universidad Finis Terrae, 1509 Pedro de Valdivia Av., Providencia, Santiago, Chile.
Ana CarvajalExercise Science Laboratory, Faculty of Medicine, School of Kinesiology, Universidad Finis Terrae, 1509 Pedro de Valdivia Av., Providencia, Santiago, Chile.
Oscar F AranedaLaboratorio Integrativo de Biomecánica y Fisiologia del Esfuerzo (LIBFE), Escuela de Kinesiologia, Facultad de Medicina, Universidad de los Andes, Santiago, Chile.
Marcelo TuestaEscuela de Kinesiologia, Facultad de Ciencias de la Rehabilitación, Universidad Andres Bello, Vina del Mar, Chile.
Alvaro ReyesEscuela de Kinesiologia, Facultad de Ciencias de la Rehabilitación, Universidad Andres Bello, Vina del Mar, Chile.
Reyna PeñaililloLaboratory of Reproductive Biology, Faculty of Medicine, Centre for Biomedical Research, Universidad de los Andes, Santiago, Chile.
Luis PeñaililloExercise Science Laboratory, Faculty of Medicine, School of Kinesiology, Universidad Finis Terrae, 1509 Pedro de Valdivia Av., Providencia, Santiago, Chile. lpenailillo@uft.cl.ORCID http://orcid.org/0000-0001-7697-9700

Funding

Fondo Nacional de Desarrollo Científico y Tecnológico 11150293
6 · The paper itself

Abstract

purposeThe purpose of this study was to compare pulmonary and plasma markers of oxidative stress and inflammation after concentric and eccentric cycling bouts in individuals with chronic obstructive pulmonary disease (COPD).

methodsTen patients with moderate COPD level (68.3 ± 9.1 years; forced expiratory volume in 1 s = 68.6 ± 20.4% of predicted) performed 30 min of moderate-intensity concentric (CONC-M: 50% maximum concentric cycling power output; PO

resultsCardiometabolic demand was 40-50% lesser for ECC-M than CONC-M and ECC-H. Greater muscle damage was induced after ECC-H than ECC-M and CONC-M. MDA decreased immediately after CONC-M (- 28%), ECC-M (- 14%), and ECC-H (- 17%), while GPx remained unchanged. IL-6 increased only after ECC-H (28%), while TNF-α remained unchanged after exercise. Pulmonary H

conclusionThese results suggest that only moderate muscle damage and inflammation were induced after high-intensity eccentric cycling, which did not induce pulmonary or plasmatic increases in markers of oxidative stress. TRIAL REGISTRATION NUMBER: Trial registration number: DRKS00009755.

Indexed as

ErgometryAgedBiomarkersEnergy IntakeFemaleHumansHydrogen-Ion ConcentrationHydrogen PeroxideInflammationMaleMuscle StrengthNitritesOxidative StressOxygen ConsumptionPulmonary Disease, Chronic ObstructiveSurveys and QuestionnairesBiomarkersHydrogen PeroxideNitritesCOPDExhaled breath condensateInterleukin-6LengtheningTBARSTNF-α

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.