Effects Of Rectus Femoris Kinesio Taping On Biomechanical Characteristics Of Stop-jump With Respect To Fatigue

Objective:The purpose of the research was to investigate the effects of rectus femoris kinesio taping on biomechanical characteristics of stop-jump during short-term fatigue to determine whether rectus femoris kinesio taping could help to resist the negative effects from fatigue and improve performance of jump.Methods:9 Subjects were healthy students from Beijing Sport University.They were required to make stop-jumps with 3 different conditions(kinesio tape,no tape,placebo tape on rectus femoris)before and during the whole procedure of fatigue tests.Collect kinematic and kinetic data with motion capture system synchronized by 3-D force plates.The interval between each test was 1 week.Results: Hip(p=0.038, 0.019, 0.045)and knee(p=0.017,0.013,0.024) flextion decreased during the “stop” phase after fatigue at the moment of landing,first peak posterior GRF and first peak vertical GRF.Fatigue decreased the peak knee extension moment(p=0.031),peak ankle plantarflextion moment(p<0.001) and vertical impluse(p=0.023) during the “jump” phase.Kinesio tape increased knee flextion at the moment of landing(p=0.032) and decreased peak knee adduction moment during “stop” phase(p=0.029).Conclusions: Kinesio tape might decrease ACL load compared with no tape and placebo tape by increasing knee flextion at moment of landing and decreasing peak knee adduction moment during landing phase.Kinesio could not improve jump performance and could not increase peak hip extension moment,knee extension moment and ankle plantarflextion moment.Kinesio tape could not help resist the negative influences from fatigue.Fatigue might increased the ACL load by decreasing the hip and knee flextion during the early period of the "stop" phase.Fatigue had negative effects on jump performance and weakened the knee extension and ankle plantarflextion muscles by decreasing their peak concentric contraction moment.