Table 3. Changes of amplitude of RIII reflex (Unit: µV).

Group	Pre	1st day	2nd day	3rd day	4th day
I	170.4 ± 68.1	135.0 ± 58.0	137.1 ± 143.3	144.3 ± 45.6	140.3 ± 40.1
II	156.3 ± 70.2	141.8 ± 36.6	130.3 ± 37.3	109.0 ± 39.3	98.2 ± 35.3

Mean ± SD. There was only a significant difference attributable to the treatment period (F=4.150, p<0.05). Group I: Two electrodes were attached to the biceps femoris muscle vertically. Group II: One electrode was attached to the biceps femoris muscle and the other was attached to the biceps femoris tendon vertically.