Biomechanical Study On The Effect Of Intramuscular Effect Taping On Deep Jump Before And After Fatigue

Objective: This study is an attempt to determine the kinematic and kinetic effects of the intramuscular patch intervention on the deep jump movements of college athletes before and after sports fatigue,to understand whether the intramuscular patch intervention can help college athletes improve the working conditions of lower limb muscles after sports fatigue,reduce the risk of sports injury and improve sports performance,and to provide a theoretical basis for the scientific application of the intramuscular patch in clinical practice and sports practice.The experiment was conducted to provide a theoretical basis for the scientific application of intramuscular patches in clinical practice and sports practice.Experimental method: 10 physical education students enrolled in Jilin University were required to perform three tests: no patch(no intervention before and after fatigue),placebo patch(inelastic white patch),and intramuscular effect patch(intramuscular effect patch).Before fatigue and after fatigue induction,respectively,five effective deep jump movements were completed,and relevant data were collected using a three-dimensional resolution system and a three-dimensional force measurement table.Results:(1)There was no significant difference in the time values of each phase of the three patching methods before fatigue.After fatigue,the time values of inotropic patching were significantly smaller than those of no patching and placebo patching in the cushion and stirrup phases;the time values of inotropic patching were significantly larger than those of no patching and placebo patching in the vacating phase.(2)Before fatigue,the joint angles of knee and ankle were significantly greater in the landing cushion phase,maximum cushion angle and stirrup extension phase,and there was no significant difference in the hip joint.After fatigue,in the landing cushion phase,the range of changes in the angles of the knee and ankle joints of the intramuscular effect patch was significantly smaller than that of the no patch and placebo patch;to the moment of maximum cushion,the range of changes in the maximum cushion angle of the knee and ankle joints of the intramuscular effect patch was significantly smaller than that of the no patch and placebo patch;in the stirrup extension phase,the range of changes in the knee joint angles of the intramuscular effect patch was significantly smaller than that of the no patch and placebo patch.(3)During the cushioning phase of the post-fatigue deep jump,the force values of the intramuscular patch in the Fx and Fy directions were significantly smaller than those of the no patch and placebo patch;during the extension phase of the post-fatigue deep jump,the force values of the intramuscular patch in the Fx direction were significantly smaller than those of the no patch and placebo patch,and the vertical extension force Fz of the intramuscular patch was significantly larger than those of the no patch and placebo patch.(4)In the post-fatigue jump depth,the peak hip power of the intramuscular patch was significantly smaller than that of the no patch and placebo patch during the cushion phase;in the pedal extension phase,the peak knee power of the intramuscular patch was significantly larger than that of the no patch and placebo patch.(5)The maximal hip extension moment,maximal knee extension moment and maximal ankle plantarflexion moment of the intramuscular effect patch before and after fatigue were not significantly changed and not statistically significant.Conclusion:1.The effect of intramuscular effect patching on human jumping movements before and after fatigue was significantly greater than that of no patching and placebo patching;2.The time values of intramuscular effect patching were shorter in the cushion phase and vacating phase and longer in the stirrup extension phase after fatigue;the range of angular changes of knee and ankle joints was significantly reduced;3.The maximum impact force values of intramuscular effect patching in the directions of Fx and Fy were significantly reduced in the jumping depth after fatigue,and the change in the maximum impact force in the direction of Fz was significantly reduced.4.The maximum hip extension moment,the maximum knee extension moment and the maximum ankle plantarflexion moment did not change significantly before and after fatigue.