橢圓機坡度改變對下肢肌群肌電訊號與生理反應之影響

Lower Extremity Muscle Activation and Physiological Response to Different Inclines of Exercise on Elliptical Trainer

吳忠芳(Chung-Fung Wu) ； 王予仕(Yu-Shih Wang) ； 黃彥鈞(Yan-Jiun Huang) ； 王順正(Soun-Cheng Wang) ； 王國樑(Guo-Leao Wang)

《體育學報》 41卷2期 (2008/06) Pp. 31-41

https://doi.org/10.6222/pej.4102.200806.0703

摘要

Purposes: To investigate how muscles of lower extremity response to different training inclines on elliptical trainer via measuring EMG and several physiological parameters. Methods: Eight volunteer subjects (age: 25.6±4.7 yrs, height: 178.1±5.3 cm, weight: 79.0±16.4 kg) performed six trials, which were composed of three different incline elliptical trainer exercises (0%, 9.3% and 18.6%) and two different cycling frequencies (30 and 60 rpm). Each exercise trial took 3 minutes and data acquisition was started at the 2(superscript nd) minute to the end of each trial. A five-minute sedentary rest was set between each exercise trail. Average of root mean square (RMS) for every cycle was calculated by a software Acq Knowledge 3.8.2. Then, RMS from every incline was divided by the maximal value of acquired data and presented as percent RMS maximal (%RMSmax). In addition, oxygen intake (VO2) and heart rate (HR) were measured during all exercise trials. Results: With increased training incline, most muscles showed increased trend in %RMSmax except for a decreased trend revealed in %RMSmax of tibialis anterior (TA). Moreover, values of %RMSmax showed significant difference among different training incline. Regarding physiological parameters, VO2 and HR responses were greater under 60 rpm of elliptical exercise than those under 30 rpm. Conclusion: The elliptical trainer (Model: Agile Trainer) could vary muscle recruitment pattern of lower limbs through incline adjustment.

關鍵字

橢圓機 ； 肌電圖

並列摘要

Purposes: To investigate how muscles of lower extremity response to different training inclines on elliptical trainer via measuring EMG and several physiological parameters. Methods: Eight volunteer subjects (age: 25.6±4.7 yrs, height: 178.1±5.3 cm, weight: 79.0±16.4 kg) performed six trials, which were composed of three different incline elliptical trainer exercises (0%, 9.3% and 18.6%) and two different cycling frequencies (30 and 60 rpm). Each exercise trial took 3 minutes and data acquisition was started at the 2(superscript nd) minute to the end of each trial. A five-minute sedentary rest was set between each exercise trail. Average of root mean square (RMS) for every cycle was calculated by a software Acq Knowledge 3.8.2. Then, RMS from every incline was divided by the maximal value of acquired data and presented as percent RMS maximal (%RMSmax). In addition, oxygen intake (VO2) and heart rate (HR) were measured during all exercise trials. Results: With increased training incline, most muscles showed increased trend in %RMSmax except for a decreased trend revealed in %RMSmax of tibialis anterior (TA). Moreover, values of %RMSmax showed significant difference among different training incline. Regarding physiological parameters, VO2 and HR responses were greater under 60 rpm of elliptical exercise than those under 30 rpm. Conclusion: The elliptical trainer (Model: Agile Trainer) could vary muscle recruitment pattern of lower limbs through incline adjustment.

並列關鍵字

elliptical trainer ； electromyography

參考文獻

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