Human Muscles Bio-resonance Stimulation Analysis: A Pilot Study

Objective:The aims of this study is to verify the influence of vibration stimulation tonormal human lower limbs major muscles under different local vibration conditions,and to determine the best vibration frequency and location by SEMG analysis. Thento explore the regulation and characteristics of human muscles biological resonancestimulation.Methods:(1)Ten normal male college students(average23+/-1.7ys, height173.5+/-4.5cm, weight70.4+/-8.2kg) were involved in this study. All of them were in squat(knee flexion300) position, accepted the10-50Hz different frequencies vibrationstimulations and were collected the surface electromyography. Left rectus femoris andsemitendinosus, left anterior tibial muscle and the medial head of gastrocnemius weredetected. The vibration stimulation point was on the left distal tibia surface andachilles’s tendon, respectively. The surface EMG characteristics of lower limbs majormuscles were analyzed under different vibration stimulations.(2)Nineteen normal college students accepted the10-50Hz different frequenciesvibration stimulations and were collected the surface electromyography. All of themwere in sitting, standing, squat (knee flexion300) and recumbent position,respectively. Left anterior tibial muscle and the medial head of gastrocnemius weredetected. The vibration stimulation point was on the left distal tibia surface. Thesurface EMG characteristics of calf muscles were analyzed under different vibrationstimulations.Results:(1)The calf muscles were activated significantly under different vibration conditions (p<0.05). The EMG values of the anterior tibial muscle were significantlydifferent with vibration frequency increasing (p<0.05). However, there were nosignificant difference among30Hz,40Hz and50Hz under the two positions (p>0.05).The gastrocnemius EMG values were not significantly different with vibrationfrequency increasing (p>0.05), as the vibration location was on the left distal tibiasurface. But on the achilles’s tendon the EMG values of the gastrocnemius weresignificantly different with vibration frequency increasing (p<0.05), and there wereno significant difference among30Hz,40Hz and50Hz (p>0.05). The thigh muscleswere no activated significantly under different vibration conditions (p>0.05).(2)Gender differences between the subjects were not statistically significant (p>0.05). The calf muscles were activated significantly in different vibration conditions(p<0.05). The EMG values of the anterior tibial muscle were significantly differentwith vibration frequency increasing (p<0.05). However, there were no significantdifference among30Hz,40Hz and50Hz in all positions. The gastrocnemius EMGvalues were not significantly different with vibration frequency increasing (p>0.05).Conclusion:(1)The calf muscles were activated significantly under different vibrationconditions, but the thigh muscles were no activated significantly.(2)The vibration stimulate position of achilles’s tendon is more likely to activatethe calf muscles than the anterior tibial muscle.(3)The vibration frequency at30-50Hz maybe the calf muscles activatedresonant frequency.(4)The human body resonance stimulation frequency is different from person toperson, but gender difference is not big. Do it appropriate because of the personwhen specific training.