Effect of external trunk perturbations on the biomechanics of plant leg during instep kick.
Wang J, Zhan Y, Fang J, Wang Y, Yang X, Liew BXW et al. · Annals of medicine · 2026
Background: This study aimed to investigate the biomechanical effect of external trunk perturbations on the plant leg during a football instep kick.
Methods: Fifteen healthy male national level division-II football athletes were recruited as participants. A Vicon three-dimensional motion capture system synchronized with Kistler force plates was utilized to collect kinematic and kinetic data during standardized instep kicking. Joint angles, moments, and stiffness of the plant leg under four perturbation conditions. Two-way repeated measures ANOVA were employed for statistical analysis.
Results: Significant main effects of perturbation anticipation and direction on the biomechanical variables of the plant leg were found. UN perturbation increased hip flexion-extension ( F = 21.94, p F = 30.64, p F = 20.13, p F = 20.75, p F = 8.8, p = 0.01), and enhanced ankle inversion-eversion stiffness ( F = 9.11, p
Conclusion: As the key
Findings: suggested, the dynamic stability under UN perturbation should be enhanced to improve the resistance of perturbations and movement control, thereby providing reference for injury prevention and training optimization.