Evidence map›Paper›PMID 35053067›Full record

ArticleBiology2022

Knee Flexor Eccentric Strength, Hamstring Muscle Volume and Sprinting in Elite Professional Soccer Players with a Prior Strained Hamstring.

Alberto Mendez-Villanueva, Francisco Javier Nuñez, Jose Luis Lazaro-Ramirez, Pablo Rodriguez-Sanchez, Marc Guitart, Gil Rodas, Imanol Martin-Garetxana, Josean Lekue, Valter Di Salvo, Luis Suarez-Arrones

Abstract read
In one paragraph

Article in Biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 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

7 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
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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

10 authors.

Alberto Mendez-VillanuevaQatar Football Association, Doha 999043, Qatar.
Francisco Javier NuñezDepartment of Sport and Informatics, Section of Physical Education and Sport, Pablo de Olavide University, 41013 Sevilla, Spain.ORCID 0000-0002-4166-3877
Jose Luis Lazaro-RamirezDepartment of Sport and Informatics, Section of Physical Education and Sport, Pablo de Olavide University, 41013 Sevilla, Spain.
Pablo Rodriguez-SanchezDepartment of Sport and Informatics, Section of Physical Education and Sport, Pablo de Olavide University, 41013 Sevilla, Spain.
Marc GuitartMedical and Performance Department, Futbol Club Barcelona, 08028 Barcelona, Spain.
Gil RodasMedical and Performance Department, Futbol Club Barcelona, 08028 Barcelona, Spain.ORCID 0000-0002-8060-3914
Imanol Martin-GaretxanaMedical Services, Athletic Club, 48196 Lezama, Spain.ORCID 0000-0003-0825-9773
Josean LekueMedical Services, Athletic Club, 48196 Lezama, Spain.
Valter Di SalvoDepartment of Movement, Human and Health Sciences, University of Rome "Foro Italico", 00135 Rome, Italy.ORCID 0000-0002-6756-3305
Luis Suarez-ArronesDepartment of Sport and Informatics, Section of Physical Education and Sport, Pablo de Olavide University, 41013 Sevilla, Spain.ORCID 0000-0002-5432-4786

Funding

Qatar National Research Fund NPRP 6-1526-3-363
6 · The paper itself

Abstract

The aim was to determine if players with a prior hamstring strain injury (HSI) exhibit bilateral deficits in knee flexor eccentric strength and hamstring muscle volume and differences in sprinting performance compared with players without a history of HSIs. Forty-six male professional soccer players participated in this study. Eccentric knee flexor strength, hamstring muscle volume (MRI), and a 20-m running sprint test (5- and 10-m split time) were assessed at the start of the preseason. Eccentric knee strength of the previously injured limbs of injured players was greater (ES: 1.18-1.36) than the uninjured limbs in uninjured players. Previously injured limbs showed possibly larger biceps femoris short heads (BFSh) and likely semitendinosus (ST) muscle volumes than the contralateral uninjured limbs among the injured players (ES: 0.36) and the limbs of the uninjured players (ES: 0.56), respectively. Players who had experienced a previous HSI were possibly slower in the 5-m (small ES: 0.46), while unclear differences were found in both the 10-m and 20-m times. Players with a prior HSI displayed greater eccentric knee flexor strength, possibly relatively hypertrophied ST and BFSh muscles, and possibly reduced 5-m sprinting performances than previously uninjured players. This can have implication for the design of secondary hamstring muscle injury prevention strategies.

Indexed as

footballhamstring injury strainmuscle morphologyNordic hamstring exerciserunning

Identifiers

PMID35053067
PMCPMC8773384

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.