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The effects of brake pedaling speed on onset time of muscle contraction in the lower extremity during driving task  

Sung, Gil-Hee (Department of Physical Therapy, College of Medical Science, Catholic University of Daegu)
Hwang, Yoon-Tae (Department of Physical Therapy, Gangneung Yeongdong College)
Park, Ji-Won (Department of Physical Therapy, College of Medical Science, Catholic University of Daegu)
Shin, Hwa-Kyung (Department of Physical Therapy, College of Medical Science, Catholic University of Daegu)
Publication Information
The Journal of Korean Physical Therapy / v.23, no.1, 2011 , pp. 7-11 More about this Journal
Abstract
Purpose: Driving is essential to maintain independent living status in modern times. Many patients want to know when they can drive again, but it's only possible if they have the ability to control lower extremity muscles. In this study, we compared the effects of velocity on onset time of lower extremity muscles during driving tasks. Methods: Twelve participants (5 male, 7 female) were enrolled. EMGs were used to test the onset time of lower extremity muscles; tibialis anterior, soleus, rectus femoris. To analyze the data, we used two way ANOVA. Results: According to brake pedaling velocity, there was a significant difference in brake response time (p<0.05). Further, when comparing the lower extremity muscles, there was a significant difference in onset time (p<0.05). The order of muscle recruitment was tibialis anterior, rectus femoris, and soleus for achieving maximal velocity, but the order was rectus femoris, tibialis anterior, soleus for achieving submaximal velocity. Conclusion: Brake pedaling velocity has significant effects on onset time of muscle contractions in the lower extremities. We suggested that a future study needs more subjects and more detailed research such as evaluat-ions of visuo-motor coordination and fine motor dexterity.
Keywords
Brake response time; Driving; Electromyography; Onset time;
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