Drop jump vertical kinetics identify male youth soccer players at greater risk of non-contact knee injury

IF 2.2 3区医学 Q1 REHABILITATION Physical Therapy in Sport Pub Date : 2025-03-06 DOI:10.1016/j.ptsp.2025.03.003

Jason S. Pedley , Rhodri S. Lloyd , Paul J. Read , Isabel S. Moore , Gregory D. Myer , Jon L. Oliver

{"title":"Drop jump vertical kinetics identify male youth soccer players at greater risk of non-contact knee injury","authors":"Jason S. Pedley , Rhodri S. Lloyd , Paul J. Read , Isabel S. Moore , Gregory D. Myer , Jon L. Oliver","doi":"10.1016/j.ptsp.2025.03.003","DOIUrl":null,"url":null,"abstract":"<div><h3>Objectives</h3><div>To determine associations between drop-jump vertical kinetics and acute non-contact knee injury-risk in male youth soccer players.</div></div><div><h3>Design</h3><div>Prospective cohort study.</div></div><div><h3>Setting</h3><div>Professional soccer academies.</div></div><div><h3>Participants</h3><div>Youth soccer players (<em>n</em> = 264).</div></div><div><h3>Main outcome measures</h3><div>Drop-jump vertical kinetics; injury epidemiology. Associations between kinetics and injury were assessed using binary logistic regression. Differences between injured and uninjured groups were compared using statistical parametric mapping.</div></div><div><h3>Results</h3><div>Peak braking: peak propulsive force ratio (OR = 1.59, 1.10–2.29, <em>p</em> < 0.05), propulsive work (OR = 0.53, 0.28–0.99, <em>p</em> < 0.05) and vertical stiffness (OR = 1.68, 1.13–2.52, <em>p</em> < 0.05) were associated with risk of sustaining a knee injury. All variables demonstrated ‘unusable’ or ‘weak’ levels of predictive ability in identifying players who would become injured (AUC 0.568–0.663).</div></div><div><h3>Conclusions</h3><div>Drop-jump vertical kinetics that characterise the shape of the force-time waveform provide insight to acute non-contact knee injury-risk in male youth soccer players. Large transient spikes in force in the early phase of ground contact, coupled with reduced propulsive forces are a risk factor for acute non-contact knee injury in male youth soccer players. Variables are not sensitive enough to predict injury but provide additional training targets to help mitigate risk in this population.</div></div>","PeriodicalId":49698,"journal":{"name":"Physical Therapy in Sport","volume":"73 ","pages":"Pages 48-56"},"PeriodicalIF":2.2000,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Therapy in Sport","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1466853X25000525","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"REHABILITATION","Score":null,"Total":0}

引用次数: 0

Abstract

Objectives

To determine associations between drop-jump vertical kinetics and acute non-contact knee injury-risk in male youth soccer players.

Design

Prospective cohort study.

Setting

Professional soccer academies.

Participants

Youth soccer players (n = 264).

Main outcome measures

Drop-jump vertical kinetics; injury epidemiology. Associations between kinetics and injury were assessed using binary logistic regression. Differences between injured and uninjured groups were compared using statistical parametric mapping.

Results

Peak braking: peak propulsive force ratio (OR = 1.59, 1.10–2.29, p < 0.05), propulsive work (OR = 0.53, 0.28–0.99, p < 0.05) and vertical stiffness (OR = 1.68, 1.13–2.52, p < 0.05) were associated with risk of sustaining a knee injury. All variables demonstrated ‘unusable’ or ‘weak’ levels of predictive ability in identifying players who would become injured (AUC 0.568–0.663).

Conclusions

Drop-jump vertical kinetics that characterise the shape of the force-time waveform provide insight to acute non-contact knee injury-risk in male youth soccer players. Large transient spikes in force in the early phase of ground contact, coupled with reduced propulsive forces are a risk factor for acute non-contact knee injury in male youth soccer players. Variables are not sensitive enough to predict injury but provide additional training targets to help mitigate risk in this population.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

求助全文

约1分钟内获得全文去求助

来源期刊

Physical Therapy in Sport 医学-康复医学

CiteScore

4.50

自引率

8.30%

发文量

125

审稿时长

39 days

期刊介绍： Physical Therapy in Sport is an international peer-reviewed journal that provides a forum for the publication of research and clinical practice material relevant to the healthcare professions involved in sports and exercise medicine, and rehabilitation. The journal publishes material that is indispensable for day-to-day practice and continuing professional development. Physical Therapy in Sport covers topics dealing with the diagnosis, treatment, and prevention of injuries, as well as more general areas of sports and exercise medicine and related sports science. The journal publishes original research, case studies, reviews, masterclasses, papers on clinical approaches, and book reviews, as well as occasional reports from conferences. Papers are double-blind peer-reviewed by our international advisory board and other international experts, and submissions from a broad range of disciplines are actively encouraged.