Effects of Soccer Header Landing Style on Lower Limb Coordination and Energy Dissi-pation
Objective To investigate the effects of soccer header landing styles on lower limb coordination and energy dissipation.Meth-ods Fourteen high-level soccer players were recruited,and kinematic and kinetic data were collected using a kinematic trapping system and a force measuring table for different landing styles of the soccer header.Results Compared with two-legged landing,angular velocity of lower limb joints decreased during one-legged landing(p<0.05),second peak time of vGRF was prolonged(p<0.05),hip energy dissi-pation decreased during right-legged landing while ankle energy dissipation increased during left-legged landing(p<0.05,p<0.05).In the knee-ankle coupling,the same-phase coordination mode was different from one-legged hip energy dissipation during landing(r=0.719,p=0.008).In right foot landing,APSI was negatively associated with hip(r=-0.594,p=0.042)energy dissipation.When landing on the left foot,DPSI was negatively correlated with hip(r=-0.058,p=0.048)and knee(r=-0.622,p=0.031)energy dissipation.Conclusion The knee joint served as the primary cushioning joint in all different landing styles,but there were differences in the secondary cushioning joint.The isochronous coordination pattern of the knee-ankle joint had a significant effect on hip energy dissipation during single-leg landing.Increasing the DPSI of the nondominant leg can help reduce the rate of ankle energy dissipation and decrease the risk of injury.