Evidence map›Paper›PMID 32930859›Full record

ArticleEuropean journal of applied physiology2020

Effects of long-term athletic training on muscle morphology and tendon stiffness in preadolescence: association with jump performance.

Nikolaos Pentidis, Falk Mersmann, Sebastian Bohm, Erasmia Giannakou, Nickos Aggelousis, Adamantios Arampatzis

Open access · hybridAbstract read
In one paragraph

Article in European journal of applied physiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 14% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.

  1. Pooled it
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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

6 authors at 2 institutions in 2 countries.

Nikolaos PentidisDepartment of Training and Movement Sciences, Humboldt-Universität zu Berlin, Berlin, Germany.ORCID https://orcid.org/0000-0003-1027-9087
Falk MersmannDepartment of Training and Movement Sciences, Humboldt-Universität zu Berlin, Berlin, Germany.ORCID https://orcid.org/0000-0001-7180-7109
Sebastian BohmDepartment of Training and Movement Sciences, Humboldt-Universität zu Berlin, Berlin, Germany.ORCID https://orcid.org/0000-0002-5720-3672
Erasmia GiannakouDepartment of Physical Education and Sports Science, Democritus University of Thrace, Komotini, Greece.
Nickos AggelousisDepartment of Physical Education and Sports Science, Democritus University of Thrace, Komotini, Greece.
Adamantios ArampatzisDepartment of Training and Movement Sciences, Humboldt-Universität zu Berlin, Berlin, Germany. a.arampatzis@hu-berlin.de.ORCID http://orcid.org/0000-0002-4985-0335
Humboldt-Universität zu Berlin · DEDemocritus University of Thrace · GR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeEvidence on training-induced muscle hypertrophy during preadolescence is limited and inconsistent. Possible associations of muscle strength and tendon stiffness with jumping performance are also not investigated. We investigated the thickness and pennation angle of the gastrocnemius medialis muscle (GM), as indicators for potential muscle hypertrophy in preadolescent athletes. Further, we examined the association of triceps surae muscle-tendon properties with jumping performance.

methodsEleven untrained children (9 years) and 21 similar-aged artistic gymnastic athletes participated in the study. Muscle thickness and pennation angle of the GM were measured at rest and muscle strength of the plantar flexors and Achilles tendon stiffness during maximum isometric contractions. Jumping height in squat (SJ) and countermovement jumps (CMJ) was examined using a force plate. We evaluated the influence of normalised muscle strength and tendon stiffness on jumping performance with a linear regression model.

resultsMuscle thickness and pennation angle did not differ significantly between athletes and non-athletes. In athletes, muscle strength was greater by 25% and jumping heights by 36% (SJ) and 43% (CMJ), but Achilles tendon stiffness did not differ between the two groups. The significant predictor for both jump heights was tendon stiffness in athletes and normalised muscle strength for the CMJ height in non-athletes.

conclusionLong-term artistic gymnastics training during preadolescence seems to be associated with increased muscle strength and jumping performance but not with training-induced muscle hypertrophy or altered tendon stiffness in the plantar flexors. Athletes benefit more from tendon stiffness and non-athletes more from muscle strength for increased jumping performance.

Indexed as

Achilles TendonAthletesAthletic PerformanceChildFemaleHumansIsometric ContractionLegMaleMovementMuscle, SkeletalMuscle StrengthPostureSportsUltrasonographyAchilles tendonMuscle hypertrophyMuscle strengthPlantar flexorsResistance exercise

Identifiers

PMID32930859
PMCPMC7674345
OpenAlexW3086166614

What OpenQuestion holds

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LicenceCC BY
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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.