Abstract: M-waves and F-responses were investigated before and after massage using the bipolar surface electrodes to stimulate the tibial nerve at the ankle recorded by bipolar surface electrodes from the muscle flexor hallucis in 30 children with cerebral palsy. After treatment, the amplitudes of the M-wave increased (P＜0.05 ); F-response reduced (P＜0.05 )in the lesion side. The observations were made bilaterally and the results revealed no significant differences(P＞0.05 )by comparing side to side. The latencies of Mwaves prolonged to 6.09～8. 28ms(P<0.05);F-responses 29.07～3l. 42ms(only Fn wave was P＜0.05in the lesion side). The significant efficiency was 25.93 %,the efficiency was 88.89 % except that 2 objects did not change and one continued to deteriorate. The experimental results suggest that the massage can improve the functional disorder of the skeletal muscle and the ventral horn of the spinal cord.

Key words: M-wave, F-uresponse, children, cerebral palsy, tibial nerve, muscle flexor hallucis, massage