Evidence map›Paper›PMID 41835020›Full record

ArticleFrontiers in sports and active living2026

Exploring the effects of combined Nordic and reverse Nordic hamstring exercises on physical fitness in prepubertal male soccer players.

Senda Sammoud, Yassine Negra, Raja Bouguezzi, Aaron Uthoff, Jason Moran, Helmi Chaabene

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. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

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

  1. Pooled it
  2. Article
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.

Senda SammoudResearch Laboratory (LR23JS01) "Sport Performance, Health & Society", Higher Institute of Sport and Physical Education of Ksar Saïd, University of La Manouba, Manouba, Tunisia.
Yassine NegraResearch Laboratory (LR23JS01) "Sport Performance, Health & Society", Higher Institute of Sport and Physical Education of Ksar Saïd, University of La Manouba, Manouba, Tunisia.
Raja BouguezziResearch Laboratory (LR23JS01) "Sport Performance, Health & Society", Higher Institute of Sport and Physical Education of Ksar Saïd, University of La Manouba, Manouba, Tunisia.
Aaron UthoffAUT Millennium, School of Sport and Recreation, Sports Performance Research Institute New Zealand (SPRINZ), Auckland, New Zealand.
Jason MoranSchool of Sport, Rehabilitation, and Exercise Sciences, University of Essex, Colchester, United Kingdom.
Helmi ChaabeneDepartment of Cardiology and Angiology, University Hospital Magdeburg, Magdeburg, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: This study aimed to examine the effects of combined Nordic Hamstring and Reverse Nordic exercises on measures of physical fitness in prepubertal male soccer players. Methods: The eccentric training program lasted 8 weeks, with two sessions per week, each lasting approximately 20 min and performed immediately after the warm-up of regular soccer training. A total of 34 prepubertal male soccer players were recruited and randomly assigned at the group level to either the eccentric training group ( Results and discussion: The findings showed moderate group-by-time interactions for all fitness measures [effect size (d) = 0.62-1.16].

Indexed as

athletic performancebiological ageeccentric trainingteam sportsyouth development

Identifiers

PMID41835020
PMCPMC12982401

What OpenQuestion holds

Textmetadata
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.