中国组织工程研究2016，Vol.20Issue(42)：6357-6362,6.DOI:10.3969/j.issn.2095-4344.2016.42.019
运动速度和目标位置影响上肢伸手触碰运动：三维运动检测及表面肌电分析
Velocity and target location influence the upper limb reaching movements:three-dimensional motion analysis combined with surface electromyograph
摘要
Abstract
BACKGROUND:Three-dimensional (3D) motion analysis system combined with electromyograph cannot only objectively analyze movement function of the upper limb, but also exert an important role in exploring the exercise-related factors and the underlying mechanism. <br> OBJECTIVE:To explore the influence of movement velocity and target location on kinematics and muscle activity in upper limb reaching. <br> METHODS:Twelve healthy young adults reached for three different location targets (frontal, ipsilateral and contralateral) at self-selected and fast speeds to with the dominant right hand, respectively. Kinematic parameters and muscle activity were recorded by Vicon 3D motion analysis system and Noraxon wireless electromyograph, synchronously. <br> RESULTS AND CONCLUSION:Reach path ratio became smal er when moving faster (P<0.001), while mean velocity, peak velocity and the time percentage of peak velocity increased (P<0.001). Posterior deltoid, biceps brachi and triceps brachi activation was higher during fast speed movement (P<0.001). Muscle activation of anterior deltoid was lower in ipsitralateral reaching than contralateral (P=0.001) and frontal reaching (P<0.001), and posterior deltoid was higher than contralateral reaching (P=0.019). Biceps brachi (P=0.039) and triceps brachi (P<0.001) activation was also higher in ipsitralateral reaching than frontal reaching. These results suggest that moving fast can contribute to more muscle activation, high velocity, smooth trajectory and increased movement quality. Posterior deltoid, elbow extension and flexion muscle activation are high in ipsitralateral reaching, while high anterior deltoid activation in contralateral reaching;therefore, target location result in muscle synergies.关键词
组织构建/组织工程/伸手运动/上肢/运动学/表面肌电/广东省自然科学基金分类
医药卫生引用本文复制引用
李丽芳,毛玉瑢,黄东锋,李乐..运动速度和目标位置影响上肢伸手触碰运动：三维运动检测及表面肌电分析[J].中国组织工程研究,2016,20(42):6357-6362,6.基金项目
广东省自然科学基金(2015A030313139)；广东省产学研项目(2013B090500099)@@@@the Natural Science Foundation of Guangdong Province, No.2015A030313139 （2015A030313139）
the Industry-University-Research Project of Guangdong Province, No.2013B090500099 （）
