Evidence map›Paper›PMID 31524834›Full record

ArticleMedicine and science in sports and exercise2020

Contralateral Effects by Unilateral Eccentric versus Concentric Resistance Training.

Wei-Chin Tseng, Kazunori Nosaka, Kuo-Wei Tseng, Tai-Ying Chou, Trevor C Chen

Abstract read
In one paragraph

Article in Medicine and science in sports and exercise, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing 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

26 citing papers in PubMed.

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  17. Influence of Menstrual Cycle on Leukocyte Response Following Exercise-Induced Muscle Damage.International journal of environmental research and public health · 2022
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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

5 authors.

Wei-Chin TsengDepartment of Exercise and Health Sciences, University of Taipei, Taipei City, TAIWAN.
Kazunori NosakaCentre for Exercise and Sports Science Research, School of Medical and Health Sciences, Edith Cowan University, Western Australia, AUSTRALIA.
Kuo-Wei TsengDepartment of Exercise and Health Sciences, University of Taipei, Taipei City, TAIWAN.
Tai-Ying ChouDepartment of Athletic Performance, National Taiwan Normal University, Taipei City, TAIWAN.
Trevor C ChenDepartment of Physical Education, National Taiwan Normal University, Taipei City, TAIWAN.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeUnilateral resistance training increases muscle strength of the contralateral homologous muscle by the cross-education effect. Muscle damage induced by second eccentric exercise bout is attenuated, even when it is performed by the contralateral limb. The present study compared the effects of unilateral eccentric training (ET) and concentric training (CT) of the elbow flexors (EF) on maximal voluntary isometric contraction (MVC) strength and muscle damage of the contralateral untrained EF.

methodsYoung men were placed into ET, CT, ipsilateral repeated bout (IL-RB), and contralateral repeated bout (CL-RB) groups (n = 12 per group). The ET and CT groups performed unilateral EF training consisting of five sets of six eccentric and concentric contractions, respectively, once a week for 5 wk by increasing the intensity from 10% to 100% of MVC, followed by 30 maximal eccentric contractions (30MaxEC) of the opposite EF 1 wk later. The IL-RB group performed two bouts of 30MaxEC separated by 2 wk using the nondominant arm, and CL-RB group performed two bouts of 30MaxEC with a different arm for each bout in 1-wk apart.

resultsThe MVC increased (P < 0.05) greater for the trained (19% ± 8%) and untrained (11% ± 5%) arms in ET when compared with those in CT (10% ± 6%, 5% ± 2%). The magnitude of changes in muscle damage markers was reduced by 71% ± 19% after the second than the first bout for IL-RB group, and by 48% ± 21% for CL-RB group. Eccentric training and CT attenuated the magnitude by 58% ± 25% and 13% ± 13%, respectively, and the protective effect of ET was greater (P < 0.05) than CL-RB, but smaller (P < 0.05) than IL-RB.

conclusionsThese results showed that cross-education effect was stronger for ET than CT, and progressive ET produced greater contralateral muscle damage protective effect than a single eccentric exercise bout.

Indexed as

ArmCreatine KinaseElbowHumansIsometric ContractionMaleMuscle, SkeletalMuscle StrengthMyalgiaRange of Motion, ArticularResistance TrainingYoung AdultCreatine Kinase

Identifiers

PMID31524834
PMCPMC12376810

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Registered trials

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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.