Evidence map›Paper›PMID 27583444›Full record

Trial reportPloS one2016

MRI-Based Regional Muscle Use during Hamstring Strengthening Exercises in Elite Soccer Players.

Alberto Mendez-Villanueva, Luis Suarez-Arrones, Gil Rodas, Rodrigo Fernandez-Gonzalo, Per Tesch, Richard Linnehan, Richard Kreider, Valter Di Salvo

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 2 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

34 citing papers in PubMed, 2 syntheses or guidelines 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

8 authors.

Alberto Mendez-VillanuevaFootball Performance & Science Department, ASPIRE Academy, Doha, Qatar.
Luis Suarez-ArronesFootball Performance & Science Department, ASPIRE Academy, Doha, Qatar.
Gil RodasMedical Department, Futbol Club Barcelona, Barcelona, Spain.
Rodrigo Fernandez-GonzaloDepartment of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
Per TeschDepartment of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
Richard LinnehanNational Aeronautics and Space Administration, Johnson Space Center, Houston, Texas, United States of America.
Richard KreiderDepartment of Health and Kinesiology, Texas A&M University, College Station, Texas, United States of America.
Valter Di SalvoFootball Performance & Science Department, ASPIRE Academy, Doha, Qatar.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The present study examined site-specific hamstring muscles use with functional magnetic resonance imaging (MRI) in elite soccer players during strength training. Thirty-six players were randomized into four groups, each performing either Nordic hamstring, flywheel leg-curl, Russian belt or the hip-extension conic-pulley exercise. The transverse relaxation time (T2) shift from pre- to post-MRI were calculated for the biceps femoris long (BFl) and short (BFs) heads, semitendinosus (ST) and semimembranosus (SM) muscles at proximal, middle and distal areas of the muscle length. T2 values increased substantially after flywheel leg-curl in all regions of the BFl (from 9±8 to 16±8%), BFs (41±6-71±11%), and ST (60±1-69±7%). Nordic hamstring induced a substantial T2 increase in all regions of the BFs (13±8-16±5%) and ST (15±7-17±5%). T2 values after the Russian belt deadlift substantially increased in all regions of the BFl (6±4-7±5%), ST (8±3-11±2%), SM (6±4-10±4%), and proximal and distal regions of BFs (6±6-8±5%). T2 values substantially increased after hip-extension conic-pulley only in proximal and middle regions of BFl (11±5-7±5%) and ST (7±3-12±4%). The relevance of such MRI-based inter- and intra-muscle use in designing more effective resistance training for improving hamstring function and preventing hamstring injuries in elite soccer players should be explored with more mechanistic studies.

Indexed as

SoccerAdolescentAdultHamstring MusclesHumansMaleYoung Adult

Identifiers

PMID27583444
PMCPMC5008723

What OpenQuestion holds

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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.