The Effects of Combining Whole Body Vibration Training with Light Resistance Squat Jump on the Neural Adaptations of Human Triceps Surae Muscles
Date Issued
2011
Date
2011
Author(s)
Un, Chi-Pang
Abstract
Background: Muscle force, explosive strength and vertical jump height are important parameters determining the performances of athletes. Traditionally, high intensity resistance training, explosive strength training and plyometric training are used to improve athletes’ performance. Recently, the whole body vibration training is recommended to increase muscle forces and explosive strength, because vibrating platforms can provide a high gravitational acceleration to enhance the sensory input to spinal reflexes, thus, increases muscle activation. Though the training effects have been discussed, the mechanisms of the neuromuscular adaptations in the traditional whole body vibration training have not yet been fully investigated. Training effects of combine training in addition to traditional whole body vibration training are neither discussed in this circumstance. Thus, the purpose of this study is to investigate the combining training effect of the whole body vibration training and light resistance squat jump exercise on the neural adaptations of triceps surae muscles. Design: Prospective study. Subjects: 24 Healthy male subjects with regular training or competition at least 6 hours per week were eligible to this study. Methods: H-reflex, V-wave, triceps surae electromyographic activities and rate of force development were measured at pre-test and post-test (8-week training). Subjects received 8-week- 3 times/week, training programs including light resistance squat jump (combine training) on whole body vibration platform, static squat (traditional training) on the whole body vibration platform or light resistance squat jump on the ground. Data analysis: Data was analyzed by using SPSS 13.0 software (SPSS Inc., Chicago, IL). Two-way ANOVA, Kruskal-Wallis test and Pearson correlation were used for data analysis. Results: After 8-weeks training, the rate of force development (37.4%-52.8% increase, p<0.0083) and vertical jump height (pre-test: 70.96±4.26cm, post-test: 76.99±6.54cm, p<0.0083) in the combine training group increased significantly. In the mean while, there were significant increased in the normalized rate of EMG rise and mean average voltage. Normalized V wave was also increased after the 8-weeks combine training (p<0.0083). Besides the combine training group, subjects performed light resistance squat jump on the ground increased their rate of force development in the 0-200ms time interval significantly (p<0.0083). Conclusion: After 8-weeks whole body vibration combining light resistance squat jump exercise, there were increased rate of force development and vertical jump height performance. Those increases might benefit from the combining effect of tonic vibration reflex and stretch reflex, leading to the increase of supraspinal motor-neurons activation and neural activation level.
Subjects
Whole body vibration training
Spinal reflex
Rate of force development
Vertical jump height
SDGs
Type
thesis
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