Effects of TRX® Training in Upper Extremity Neuromuscular System

• Main Authors: Guan-Jie Huang, 黃冠傑
• Other Authors: Huai-Ting Lin
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/dm263t

碩士 === 高雄醫學大學 === 運動醫學系碩士班 === 106 === Background: Athletes with good muscle strength can improve sport performance, and the elderly with good muscle strength can effectively reduce the risk of falls and improve the quality of life. Therefore, it’s important for most people to have proper strength training. The increase in muscle strength mainly comes from the effects of muscle hypertrophy and neural adaption. Strength training can be divided into stable training and unstable training depending on the training environment. Suspension training, TRX, is the most famous unstable training recently. Previous study investigated the difference between TRX and traditional resistance training groups(RT). They found that these two training methods have similar effect in muscle strength improvement after 6 weeks training. However, the subjects had TRX training did not find significant muscle hypertrophy. Therefore, we hypothesized the effect of TRX training on muscle strength is mainly from neural adaptation. Purpose: The purpose of this study is to investigate the effect of TRX training in neuromuscular system of upper extremity. 　　Method: Thirty-two collegiate students were divided into TRX group and RT group composed of similar training. There were eight weeks training, and twice a week. The experiment would compare the differences among the pre-training, mid-training (4 weeks) and post-training (8weeks)and between two groups. The tested parameters were including the biceps and triceps muscle strength, active and passive position proprioception, strength proprioception, median nerve conduction velocity, mean firing rate and recruitment threshold of muscle motor unit and upper body agility. 　　Results: The results showed that muscle strength was significantly increased after eight weeks in both TRX training and RT training, and had similar level of improvement.. However, neurological adaptation of TRX group in the first four weeks was significantly greater than RT group. In addition, TRX training can significantly improve active position proprioception, strength proprioception and upper body agility, and there was significant difference between two groups. Then, passive position proprioception did not achieve significant differences between two groups. Finally, both TRX training and RT training have no effect on the median nerve conduction velocity. 　　Conclusion: According to the results, it appears that TRX training not only effectively increase muscle strength but having more neurological stimulattionesning that achieved similar effector even better than traditional resistance training. Therefore, TRX can be used as an effective neuromuscular rehabilitation or training tools.