穿戴髌腱加压带对跳跃动作影响的生物力学研究

Biomechanical Study on Effect of Wearing Patellar Tendon Compression Band on Jumping Movement

为探讨髌腱加压带对股四头肌肌力、活化程度和跳跃力学的影响,招募16位自愿参与本实验的健康受试者,运用等速肌力仪及表面肌电测试系统,监测穿戴髌腱加压带前后股四头肌肌力及肌肉活化程度,并利用三维测力台分析3种不同跳模式的地面反作用力.结果显示:①穿戴髌腱加压带对股四头肌肌力及肌肉活化程度无显著影响,但可有效提升股内侧肌活化程度并可降低股外侧肌活化程度;②穿戴髌腱加压带可显著增加蹲踞跳起跳时地面反作用力,但对下蹲跳和着地反弹跳起跳时的地面反作用力无影响作用;③穿戴髌腱加压带虽不影响下蹲跳及着地反弹跳的地面反作用力,但却在负荷率及着地反弹跳第1次及第2次着地时地面反作用力方面存在下降趋势.认为穿戴髌腱加压带对于股四头肌肌力输出与肌肉活化程度没有负面效益,不会影响股四头肌在运动过程中的伸张-收缩循环机制,能降低着地时的冲击负荷.

Studies have been done to explore the effect of patellar tendon compression band on quadriceps femoris muscle strength,activation degree and jumping mechanics,and to provide useful reference for patellar tendinitis patients,athletes and national fitness enthusiasts how to use patellar tendon compression band scientifically.Sixteen healthy volunteers were recruited to participate in the experiment.Isokinetic myodynamic apparatus and surface electromyography were used to monitor the quadriceps femoris muscle strength and muscle activation before and after wearing patellar tendon compression band.Three-dimensional force table was used to analyze the ground reaction force of three different jumping modes.Results show that,1)Wearing patellar tendon compression band had no significant effect on quadriceps femoris muscle strength and muscle activation,but it could effectively enhance the activation of medial femoral muscle and reduce the trend of lateral femoral muscle activation;2)Wearing patellar tendon compression band significantly increased ground reaction force during squat jump,but had no effect on ground reaction force during squat jump and landing rebound jump;3)Wearing patellar tendon compression band had no effect on ground reaction force during squat jump and landing rebound jump.Although wearing patellar tendon compression belt does not affect the ground reaction force of squatting,squatting and landing rebound,there is a downward trend in the load rate and the ground reaction force of the first and second landing rebound.It is concluded that wearing patellar tendon compression band has no negative effect on quadriceps femoris muscle strength output and muscle activation,nor does it affect the mechanism of quadriceps femoris stretching-contracting circulation during exercise,and can reduce the impact load when landing.