Analysis of lower limb muscle activation and injury risk in firefighters under jumping tasks
DU Xiaohan
TAO Pengyu
MENG Lin
XU Rui
Abstract：To explore the relationship between muscle synergy patterns and firefighters'injury risk,we constructed a risk assess-ment model for injuries,analyzed the muscle patterns of the lower limbs of firefighters during jumping,and evaluated the risk of injury.Firstly,10 firefighters were recruited and divided into injured and non-injured groups.The injury status of the firefighters was then re-corded one year after the experiment.Subsequently,muscle synergy characteristics were analyzed via non-negative matrix factorization and least squares to develop the injury risk assessment model.The results showed that 4 and 3 synergy patterns in the injured group and non-injured group respectively,which proved the phenomenon of pattern decomposition.Differences in force-generating characteristics between the two groups were identified based on the temporal feature H vector.The risk assessment model(R2＝0.6899,P＝0.0006)indicated that firefighters with fewer muscle synergy patterns had a lower risk of injury.The result indicates that enhancing muscle strength can reduce the risk of training injuries.
Keywords：Firefighter injury risk assessmentJumping taskMuscle synergyNon-negative matrix factorizationLinear regres-sion
Publication Date：2026-02-28
Online Publishing Date：2026-09-11(First online date of this platform, not the publication date of the document)
Pages：8( 43-50 )