کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8799828 1604176 2017 23 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Different fatigue-resistant leg muscles and EMG response during whole-body vibration
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی ارتوپدی، پزشکی ورزشی و توانبخشی
پیش نمایش صفحه اول مقاله
Different fatigue-resistant leg muscles and EMG response during whole-body vibration
چکیده انگلیسی
The purpose of this study was to determine the effects of static whole-body vibration (WBV) on the Electromyograhic (EMG) responses of leg muscles, which are fatigue-resistant in different manner. The study population was divided into two groups according to the values obtained by the Fatigue Index [Group I: Less Fatigue Resistant (LFR), n = 11; Group II: More Fatigue Resistant (MFR), n = 11]. The repeated electromyographic (EMG) activities of four leg muscles were analyzed the following determinants: (1) frequency (30 Hz, 35 Hz and 40 Hz); (2) stance position (static squat position); (3) amplitude (2 mm and 4 mm) and (4) knee flexion angle (120°), (5) vertical vibration platform. Vibration data were analyzed using Minitab 16 (Minitab Ltd, State College, PA, USA). The significance level was set at p < .05. The study results showed that static WBV stimuli given at different frequencies and amplitudes resulted in a significant increase (p < .05) in compared, the LFR group showed significantly (1) higher rates of quadriceps femoris and hamstring muscle fatigue (p < .05), (2) higher levels of knee extensor and flexor torque (p < .05) and (3) higher percentage increases in EMG activation at higher frequencies (max at 40 Hz) and amplitudes (4 mm) (p < .05). The present study can be used for the optimal prescription of vibration exercise and can serve to guide the development of training programs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electromyography and Kinesiology - Volume 37, December 2017, Pages 147-154
نویسندگان
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