Evidence map›Paper›PMID 24563093›Full record

ArticleEuropean journal of applied physiology2014

Eccentric exercise-induced muscle damage of pre-adolescent and adolescent boys in comparison to young men.

Trevor C Chen, Hsin-Lian Chen, Yi-Chuen Liu, Kazunori Nosaka

Abstract read
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In one paragraph

Article in European journal of applied physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 2 pooled it
4.1field-weighted citation impact, top 7% 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

31 citing papers in PubMed, 2 syntheses or guidelines pooled it, 54 citations in OpenAlex.

  1. Pooled it
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  5. Effects of Post-Exercise Whey Protein Consumption on Recovery Indices in Adolescent Swimmers.International journal of environmental research and public health · 2020
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  8. Eccentric exercise: Muscle damage to the new normal.Journal of sport and health science · 2026
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  15. Eccentric Exercise: Adaptations and Applications for Health and Performance.Journal of functional morphology and kinesiology · 2021
    Review
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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

4 authors at 3 institutions in 2 countries.

Trevor C ChenDepartment of Physical Education, National Taiwan Normal University, P.O. Box 97-71, Taipei City, Taipei, 11699, Taiwan, tcchen@ntnu.edu.tw.
Hsin-Lian Chen
Yi-Chuen Liu
Kazunori Nosaka
Edith Cowan University · AUNational Chiayi University · TWNational Taiwan Normal University · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study compared changes in indirect muscle damage markers after maximal eccentric exercise of the elbow flexors (EF) among pre-adolescent (9-10 years), adolescent (14-15 years) and post-adolescent (20-25 years) men to test the hypothesis that the magnitude of muscle damage would increase with increase in age.

methodsThirteen untrained men of each age group performed two bouts (ECC1, ECC2) of 30 maximal EF eccentric contractions. Several indirect muscle damage markers were measured from the exercised arm before, immediately after, and 1-5 days post-exercise. Changes in maximal voluntary concentric contraction torque of the EF (MVC), range of motion of the elbow joint, upper arm circumference (CIR), muscle passive stiffness, muscle soreness, plasma creatine kinase activity and myoglobin concentration after ECC1 and ECC2 were compared amongst groups by a mixed-design two-way ANOVA.

resultsMVC before exercise was smaller (P < 0.05) for pre-adolescent (8.9 ± 1.9 Nm) than adolescent (25.1 ± 3.9 Nm) and adult (35.3 ± 4.6 Nm), and for adolescent than adult. Changes in all variables after ECC1 were smaller (P < 0.05) for pre-adolescent and adolescent when compared with adult, and all except CIR changes were smaller (P < 0.05) for pre-adolescent than adolescent. After ECC2, changes in all variables were smaller (P < 0.05) than those after ECC1 for all groups, but the magnitude of the changes was different among groups (P < 0.05) in the same way as that after ECC1.

conclusionThese results indicate that the magnitude of muscle damage is increased from pre-adolescent, adolescent to post-adolescent men.

Indexed as

Muscle ContractionResistance TrainingAdolescentAdultAge FactorsCase-Control StudiesChildHuman DevelopmentHumansMaleMuscle, SkeletalMyalgia

Identifiers

PMID24563093
OpenAlexW1995002620

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.