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Relationship between the amount of surface EMG and tension produced. EMG recorded bipolarly using surface electrodes placed 3–5 cm apart on the skin covering the muscle. A linear relationship exists between the amount of integrated EMG and tension produced (TA). Potential spread to antagonistic muscle can be ignored (GS). TA: pretibial muscles, GS: gastrocnemius-soleus muscles. (From Yanagisawa, 198424)).
