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Angular Velocity Affects Trunk Muscle Strength and EMG Activation during Isokinetic Axial Rotation
المؤلفون المشاركون
Liu, Xia
Fan, Jian-Zhong
Ni, Guo-Xin
المصدر
العدد
المجلد 2014، العدد 2014 (31 ديسمبر/كانون الأول 2014)، ص ص. 1-8، 8ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2014-04-08
دولة النشر
مصر
عدد الصفحات
8
التخصصات الرئيسية
الملخص EN
Objective.
To evaluate trunk muscle strength and EMG activation during isokinetic axial rotation at different angular velocities.
Method.
Twenty-four healthy young men performed isokinetic axial rotation in right and left directions at 30, 60, and 120 degrees per second angular velocity.
Simultaneously, surface EMG was recorded on external oblique (EO), internal oblique (IO), and latissimus dorsi (LD) bilaterally.
Results.
In each direction, with the increase of angular velocity, peak torque decreased, whereas peak power increased.
During isokinetic axial rotation, contralateral EO as well as ipsilateral IO and LD acted as primary agonists, whereas, ipsilateral EO as well as contralateral IO and LD acted as primary antagonistic muscles.
For each primary agonist, the root mean square values decreased with the increase of angular velocity.
Antagonist coactiviation was observed at each velocity; however, it appears to be higher with the increase of angular velocity.
Conclusion.
Our results suggest that velocity of rotation has great impact on the axial rotation torque and EMG activity.
An inverse relationship of angular velocity was suggested with the axial rotation torque as well as root mean square value of individual trunk muscle.
In addition, higher velocity is associated with higher coactivation of antagonist, leading to a decrease in torque with the increase of velocity.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Fan, Jian-Zhong& Liu, Xia& Ni, Guo-Xin. 2014. Angular Velocity Affects Trunk Muscle Strength and EMG Activation during Isokinetic Axial Rotation. BioMed Research International،Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-485944
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Fan, Jian-Zhong…[et al.]. Angular Velocity Affects Trunk Muscle Strength and EMG Activation during Isokinetic Axial Rotation. BioMed Research International No. 2014 (2014), pp.1-8.
https://search.emarefa.net/detail/BIM-485944
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Fan, Jian-Zhong& Liu, Xia& Ni, Guo-Xin. Angular Velocity Affects Trunk Muscle Strength and EMG Activation during Isokinetic Axial Rotation. BioMed Research International. 2014. Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-485944
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-485944
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
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