Evidence map›Paper›PMID 35674828›Full record

Trial reportEuropean journal of applied physiology2022

Blood oxidative stress biomarkers in women: influence of oral contraception, exercise, and N-acetylcysteine.

Karlee M Quinn, Llion Roberts, Amanda J Cox, David N Borg, Evan N Pennell, Daniel R McKeating, Joshua J Fisher, Anthony V Perkins, Clare Minahan

Open access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in European journal of applied physiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 pooled it
0.2field-weighted citation impact, top 47% 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

3 citing papers in PubMed, 1 synthesis or guideline pooled it, 2 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. 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

9 authors at 1 institution in 1 country.

Karlee M QuinnGriffith Sports Science, Griffith University, Gold Coast, QLD, 4222, Australia. karlee.quinn@griffithuni.edu.au.ORCID http://orcid.org/0000-0001-6772-0158
Llion RobertsGriffith Sports Science, Griffith University, Gold Coast, QLD, 4222, Australia.
Amanda J CoxSchool of Medical Science, Griffith University, Gold Coast, QLD, 4222, Australia.
David N BorgThe Hopkins Centre, Menzies Health Institute Queensland, Griffith University, Brisbane, QLD, 4102, Australia.
Evan N PennellSchool of Medical Science, Griffith University, Gold Coast, QLD, 4222, Australia.
Daniel R McKeatingSchool of Medical Science, Griffith University, Gold Coast, QLD, 4222, Australia.
Joshua J FisherSchool of Medical Science, Griffith University, Gold Coast, QLD, 4222, Australia.
Anthony V PerkinsSchool of Medical Science, Griffith University, Gold Coast, QLD, 4222, Australia.
Clare MinahanGriffith Sports Science, Griffith University, Gold Coast, QLD, 4222, Australia.
Griffith University · AU

Funding

Sport Performance Innovation and Knowledge Excellence unit, Queensland Academy of Sport 112
6 · The paper itself

Abstract

purposeTo compare physiological responses to submaximal cycling and sprint cycling performance in women using oral contraceptives (WomenOC) and naturally cycling women (WomenNC) and to determine whether N-acetylcysteine (NAC) supplementation mediates these responses.

methodsTwenty recreationally trained women completed five exercise trials (i.e., an incremental cycling test, a familiarisation trial, a baseline performance trial and two double-blind crossover intervention trials). During the intervention trials participants supplemented with NAC or a placebo 1 h before exercise. Cardiopulmonary parameters and blood biochemistry were assessed during 40 min of fixed-intensity cycling at 105% of gas-exchange threshold and after 1-km cycling time-trial.

resultsWomenOC had higher ventilation (β [95% CI] = 0.07 L·min

conclusionsBlood biomarkers relating to oxidative stress and inflammation are elevated in WomenOC during exercise. There may be an increased strain on the endogenous antioxidant system during exercise, since NAC supplementation in WomenOC did not dampen the exercise-induced increase in malondialdehyde. Future investigations should explore the impact of elevated oxidative stress on exercise adaptations or recovery from exercise in WomenOC.

Indexed as

AcetylcysteineOxidative StressBiomarkersContraceptionContraceptives, OralCross-Over StudiesDouble-Blind MethodFemaleHumansMalondialdehydeAcetylcysteineBiomarkersContraceptives, OralMalondialdehydeAntioxidantsFemale athleteInflammationPerformancePhysiologyVentilation

Identifiers

PMID35674828
PMCPMC9287208
OpenAlexW4282927256

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.