Analysis of Muscle Activity According to the Foot Area in Stair Walking

The purpose of the present study was to investigate differences the difference in muscle
activity between landing with the toe side of the feet and with the entire sole during stair
walking to find the landing method that has larger exercise effects. The subjects of the
present study were eight adult male students of S university located in S-si. A Noraxon
electromyogram (EMG) system (Telemyo 2400T system, Noraxon, USA) was used to
analyze the activity of the lower extremity muscles in both motions. EMG signals were
collected by attaching a bipolar surface electrode to the surface of the subject's skin. The
data transmission method used was the wi-fi wireless digital communication method and
the sampling rate was set to 1000Hz. The iEMG values of the lower extremity muscles
were calculated as analytical variables and the following conclusions were drawn
through analysis.
First, there was no difference in the activity of the femoral rectus muscle between the
landing with the toe side of the feet and the landing with the entire sole.
Second, the landing with the toe side of the feet increased the activity of biceps femoris
muscle thereby producing high exercise effects.
Third, the landing with the toe side of the feet increased the activity of the anterior
tibialis and the soleus muscles thereby producing greater forces than when landing with
the entire sole