The Influence of Different Vibration Frequencies Using Neuromuscular Response on Hand Functions
| Autor: | Wang, Tzu Wei, 王子瑋 |
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| Rok vydání: | 2009 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 97 The hypothesis is that the acute effect of different vibration stimulations using kinds of neuromuscular response such as high frequency (25Hz), medium frequency (16Hz), lower frequency (12Hz), without vibration (isometric contraction only) and control group on performance, control ability, tactile sense, reaction time, electro mechanical delay (EMD), grip strength, muscle activity, and M-wave, in hand fine-motor muscles, and also to compare stimulus effect among different vibration stimulations. Sixteen, healthy, nonathletic volunteers participated in the study. Subjects were required to accept 5 stimulations randomly, and every subject had to accept the duration of 20 seconds stimulation, with using their maximal voluntary contraction to hold the handy vibrator. All subjects were tested before every stimulation as a pre-test for three times except for M-wave test (one time), and the acute effect test as a post-test were examined for one time after 10 seconds rest when stimulation had finished already. Subsequently, 5 minutes after stimulation finished, a recovery test was performed the exact test as the recovery effect test. However, the Recovery- Post test comparison would be described as acute residual effect. After repeat measure one-way ANOVA test, (1) Control ability was significant improved on acute effect test of the MFV group (p.05). In conclusion, this study indicated that an appropriate vibration frequency should be used to the specific application. We found that 12 Hz may have an improvement for EMD, 16 Hz may have an improvement for acute control ability, and higher frequency (25Hz & 16Hz) may have an improvement for grip strength after recovery. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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