ArticlePhysical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine2025
Drop jump vertical kinetics identify male youth soccer players at greater risk of non-contact knee injury.
Article in Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Task specific effects of fatigue on lower limb muscle synergies during single and double leg drop jumps in female athletes.Frontiers in physiology · 2026Article
- Comparing the Force-Time Characteristics Between Countermovement and Assisted Countermovement Jump with Different Landing Strategies.Muscles (Basel, Switzerland) · 2025Article
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Authors and funding
6 authors.
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Abstract
objectivesTo determine associations between drop-jump vertical kinetics and acute non-contact knee injury-risk in male youth soccer players.
designProspective cohort study.
settingProfessional soccer academies.
participantsYouth soccer players (n = 264).
main outcome measuresDrop-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.
resultsPeak 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).
conclusionsDrop-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.
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