The effect of sports taping on the lower limbs' muscle activities in isokinetic exercise

This study compared EMG activities between quadriceps and hamstrings with taping and without taping during isokinetic exercise. For this experimentation, Eight healthy male and female university students performed knee extension and flexion at $180^\circ$/s for experimentation, and isometric action at $90^\circ$ for MVIC(maximam voluntary isometric contraction). Cybex(Cybex340) was used for isokinetic exercise and its statistical analysis was done by paired t-test. After surface electrodes were attached to rectus femoris, vastus medialis, vastus laterlis, biceps femoris, and semitendinosus, averaged EMG and Peak EMG, with taping and without taping, were measured. There were no significant mucsles EMG activities between with taping and without taping except rectus femoris during flexion and biceps femoris during extension. The EMG signals of rectus femoris in flexion and biceps femoris in extention were significantly reduced with taping. EMG activities were generally decreased after taping when we examine the whole patterns of data. This seems to be due to the fact that by sustaining the vector direction of the muscles, sports taping makes it possible to do an exercise of the same load with just a little activity of muscles. Because the muscles which showed significant statistical differences were all antagonist, we think the taping took the stability supporting role of antagonist, so that EMG activities were reduced. And another possible reason is that it seems to be related to proprioception that manages extension of muscles.

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