ArticleInternational journal of environmental research and public health2021
Influence of Football Match-Play on Isometric Knee Flexion Strength and Passive Hip Flexion Range of Motion in Football Referees and Assistant Referees.
Article in International journal of environmental research and public health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 2 of them syntheses that pooled 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.
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.
Who cites it
6 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Epidemiology of Injury in Elite and Amateur Soccer Referees: A Systematic Review and Meta-analysis.Sports medicine (Auckland, N.Z.) · 2025Pooled it
- A Systematic Review of the Physical, Physiological, Nutritional and Anthropometric Profiles of Soccer Referees.Sports medicine - open · 2023Pooled it
- Smartphone-Assessed Single-Leg Deadlift Stability is Associated with Sprint Velocity in Youth Soccer Players: A Cross-Sectional Study.Journal of musculoskeletal & neuronal interactions · 2026Article
- Analysis of Sports Supplement Consumption of Elite Referees of the Spanish Professional Fotball League.Nutrients · 2024Article
- Disciplinary measures defining referee activity in top-European football leagues: A cross-sectional investigation.Heliyon · 2024Article
- Monitoring modifiable injury risk factors over an in-season mesocycle in semi-professional female field hockey players.BMC sports science, medicine & rehabilitation · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The aim of this study was to examine the acute effect of officiating a football (soccer) match on isometric knee flexion strength and passive hip flexion range-of-motion (ROM) in referees and assistant football referees. Twelve referees (25.3 ± 3.3 years) and twenty-three assistant referees (25.1 ± 4.8 years) underwent measurements on isometric knee flexion strength and passive hip flexion ROM before and after officiating an official football match. Referees' and assistant referees' running patterns were monitored during the match using GPS technology. In comparison to pre-match values, referees reduced their isometric knee flexion strength (-12.36%,
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Registered trials
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.