Evidence map›Paper›PMID 41423498›Full record

ArticleScientific reports2025

Biomechanical effects of different change of direction angles on lower limb joint load and injury risk in soccer players.

Jianjun Li, Haonan Qian

Abstract read
In one paragraph

Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

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

  1. Pooled it
  2. Trial
  3. 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

2 authors.

Jianjun LiHealth Management College of Xianning Vocational TechnicalCollege, Xianning, 437100, China.
Haonan QianDepartment of Physical Education, Hanyang University, Seoul, 04763, Republic of Korea. kingkg22@hanyang.ac.kr.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study investigated the biomechanical effects of different change of direction (COD) angles (45°, 90°, 135°, and 180°) on lower limb joint loads and injury risk in 26 male soccer players. Using three-dimensional motion capture, force platforms, and electromyography, we analyzed joint kinetics, kinematics, and muscle activation patterns during standardized COD tasks. Data were analyzed using repeated-measures ANOVA with Bonferroni post-hoc corrections (α = 0.05), with effect sizes reported as partial eta-squared (ηp²). Results demonstrated progressive increases in peak knee abduction moment (141% from 45° to 180°) and dynamic valgus index (152% increase), with a critical nonlinear threshold at 90°. Sharper CODs (≥ 135°) produced high-risk biomechanical patterns, with 88% of participants exceeding ACL injury risk thresholds during 180° tasks compared to 19% at 45°. Earlier hamstring activation (12.3% vs. 18.7% of stance phase) and increased muscle coactivation were observed at sharper angles. These findings suggest soccer training programs should prioritize angle-specific injury prevention for CODs ≥ 135°, including progressive eccentric strengthening, neuromuscular control training, and technique modification targeting reduced knee abduction moments and enhanced dynamic stability.

Indexed as

Knee JointLower ExtremitySoccerAnterior Cruciate Ligament InjuriesAthletesBiomechanical PhenomenaElectromyographyHumansMaleRange of Motion, ArticularWeight-BearingYoung AdultAnterior cruciate ligamentChange of directionInjury riskKnee joint loadingSoccer biomechanics

Identifiers

PMID41423498
PMCPMC12749382

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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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.