Evidence map›Paper›PMID 42491631›Full record

ArticleFrontiers in sports and active living2026

Low-volume Nordic hamstring training improves change-of-direction performance more than higher volumes in youth soccer players.

Raouf Hammami, Javier Gene-Morales, Pablo Jiménez-Martínez, Abdelkader Mahmoudi, Haithem Rebai, Carlos Alix-Fages, Amador García-Ramos, Danica Janicijevic, Juan C Colado

Abstract read
In one paragraph

Article in Frontiers in sports and active living, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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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

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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

9 authors.

Raouf HammamiTunisian Research Laboratory 'Sports Performance Optimization', National Center of Medicine and Science in Sports (CNMSS) (CNMSS-LR09SEP01), Tunis, Tunisia.
Javier Gene-MoralesResearch Group in Prevention and Health in Exercise and Sport (PHES), Department of Physical Education and Sports, University of Valencia, Valencia, Spain.
Pablo Jiménez-MartínezResearch Group in Prevention and Health in Exercise and Sport (PHES), Department of Physical Education and Sports, University of Valencia, Valencia, Spain.
Abdelkader MahmoudiTunisian Research Laboratory 'Sports Performance Optimization', National Center of Medicine and Science in Sports (CNMSS) (CNMSS-LR09SEP01), Tunis, Tunisia.
Haithem RebaiHigher Institute of Sport and Physical Education of Ksar-Said, Manouba University, Manouba, Tunisia.
Carlos Alix-FagesResearch Group in Prevention and Health in Exercise and Sport (PHES), Department of Physical Education and Sports, University of Valencia, Valencia, Spain.
Amador García-RamosDepartment of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
Danica JanicijevicResearch Academy of Human Biomechanics, The Affiliated Hospital of Medical School of Ningbo, Ningbo, China.
Juan C ColadoResearch Group in Prevention and Health in Exercise and Sport (PHES), Department of Physical Education and Sports, University of Valencia, Valencia, Spain.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: Soccer players adopt hamstring-strengthening programs to enhance sprint and change-of-direction (CoD) performance, despite limited information on optimal volume. Therefore, we aimed to compare low, moderate, and high volumes of Nordic curl training on linear sprint and CoD in pubertal soccer players. Methods: Sixty male youth soccer players (13.69 ± 0.31years, 159.43 ± 8.55 cm, 48.51 ± 7.93 kg) were randomly assigned into three groups: low- ( Results: While all three groups improved their performance across all tests, a two-way repeated-measures ANCOVA revealed a significant time × group interaction ( Discussion: Low-volume Nordic curl training is the most effective training dose for improving CoD performance in top-tier youth soccer athletes. For sprint, both low and moderate volumes improve the 10 m sprint more than high volume, and all three volumes improve the 20 m sprint similarly.

Indexed as

agilitydose-responseeccentric strengthfootballspeed

Identifiers

PMID42491631
PMCPMC13378016

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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.