Effect of whole body vibration training and resistance training on muscle function and performance in elders

• Main Authors: Yu-Shan Chang, 張瑜珊
• Other Authors: Chi-Huang Huang
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/17407486086428577569

碩士 === 國立體育大學 === 運動保健學系 === 103 === Purpose: The phenomenon of senescence is inevitable while one’s age is increasing. How to maintain muscle function and performance of the elderly individuals is a common goal for us nowadays. This study investigated the effect of two different exercise modes on lower limb muscle activation in elders. Methods: Participants (aged between 67-84 years old) form a community in Guishan Township, Taoyuan County were assigned to either a whole body vibration group (Group WBV, n = 11) or a resistance training group (Group RT, n = 7). The frequency and amplitude of WBV protocol was set at 20-30 Hz and 2 mm, respectively. The RT protocol included sit-to-stand exercise. The training session was performed 3 times per week for 8 weeks with progressive intensity levels. The duration of work and rest was both set at 30 seconds. The Chinese-Canadian Study of Health and Aging Clinical Frailty Scale (CSHA-CFS) was used to determine the level of frailty in these subjects at pre- and post-training. The degree of muscle activation in one dominant leg including the vastus lateralis, biceps femoris, and gastrocnemius was recorded by electromyography (EMG) during the 8-foot timed up-and-go test. Statistics: A mixed-design 2-way ANOVA was used to compare the degree of lower limb muscle activation between different exercise modes and between pre- and post-training. Results: The level of frailty in these participants was between grade 2-3. There was no significant difference in EMG data between Group WBV and Group RE following 8-week training. However, there was a trend of increase in the degree of muscle activation of the vastus lateralis in both Group WBV and Group RE based on the result of descriptive statistics. Conclusion: The degree of muscle activation did not decrease following 8-week training, thus both WBV and RT could maintain muscle function and performance in elders.