| Purpose: Vibration training was not well applied to practical strength training due to specially professional technical operation and little knowledge of the characteristic of vibration training, however, recent studies have shown the explosive strength and speed-strength increase after vibration-exercise. Meanwhile there was still a lack of details on logical comparative model in vibration training. The aim of present study was develop the pneumatic and self-vibration loading Strength Training Apparatus that is suitable to strength Training of aquatics for making become easy in practical application of vibration-exercise in strength training , and to investigate differences between vibration training and pneumatic loading in strength training by making a cute and a long-term structural endurance training exercise for enriching theory of vibration training and to assess the effectiveness of the apparatus.Methods: It was applied to the experiment for the rational comparative model that dynamic force of pneumatic loading equal to average dynamic force of vibration during elbow– flexor contraction. Ten in exhaust group and six in moderate group trained male volunteers participated in single endurance training exercise and twelve swimmers participated in a endurance training exercise,. Heart rate, lactate, and sEMG were respectively measured in vibration exercise and pneumatic loading exercise. The sEMG signals were analyzed by linear method and Wavelet Packet Entropy and complexity method in the cute exercise. Pre- and post-isometric, maximal dynamic(1 RM ) , power of , and maximal endurance of elbow - flexor strength were measured in the long-term intensity 40% 1RM, 3 weekly,8 weeks exercise with and without vibration.Results: Between the heart rate in exercise with and without vibration, there were no difference found in moderate intensity group and exhaust group. The lactate (10.54±1.87,12.32±2.57mmol/l;P<0.01)in the exhaust group was significantly lower after the exercise with than with vibration. The RMS of sEMG signal(4.28±1.15,3.54±1.21;P<0.05) was significantly higher, MF lowe(r0.887±0.119,1.083±0.188;P<0.01), rate of the RMS((0.0001±8.43)×10-3,(5.81±5.56)×10-3;P<0.05), rate of the MF smaller(-0.711±0.375,-1.078±0.355,P<0.05), wavelet packet entropy(WPE)lower(1.421±0.216, 1.526±0.244, P<0.05), rate of the WPE smaller(-1.114±0.674, -1.720±0.448, P<0.05) in exercise with than without vibration.After 8 weeks endurance training, comparable effects were observed on the increased rate of the maximal isometric strength and maximal endurance ,and the rate of maximal dynamic strength and power were significantly higher in exercise with than without vibration.Conclusions: It suggests that the comparative model is a feasible for future study. The lower lactate after a appropriate period of vibration time indicates that training intensity is lower exercise with than with out vibration. Vibration training is likely to activate greater numbers of higher and lower threshold motor units which is more synchronous. By the sEMG signals trend of amplitude and frequency, explain lower lactate after vibration and to determine the shortest a period of time that well responses of to vibration. The low level and smaller rate of neural activity indicate that the recruitment task of motor unit is simpler or that vibration training is beneficial for the recruitment task of motor unit. A portion of the task might be completed by the tonic vibration reflex contraction which vibration training evoked. Vibration training inhibit excitability of the motoneurone pool, so there is the potentiation of the motoneurone pool after adaptive vibration training, which is a reasonable explanation to strength training being more efficient in exercise with than without vibration.Vibration training excels pneumatic loading training in maximal dynamic- and speed- strength. There is no difference between vibration and pneumatic loading training in strength endurance, however, vibration training increase strength endurance. Owing e to speed loading, vibration training is a method I of improved power in static pose or motion.The Pneumatic Loading Self-vibration Strength Training Apparatus is worth popularization due to its valuable function of providing foreseeing dynamic constant force after calibration, alternating force, providing stimulus of frequency conversion with self energy, adjustable continuous amplitude, safety, easy operation, self-adaptation, self-regulation.it is a instrument suitable for research to vibration.
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