Joint Coordination and Muscle Activities of Ballet Dancers During Tiptoe Standing.
Joint Coordination and Muscle Activities of Ballet Dancers During Tiptoe Standing.
复制标题
芭蕾舞演员踮起脚尖站立时的关节协调和肌肉活动。
DOI：
10.1123/mc.2015-0002
复制
发表时间：
2016
期刊：
影响因子：
1.1
通讯作者：
Kouzaki M.
中科院分区：
文献类型：
--
作者：
Tanabe H;Fujii K;Kouzaki M.
本研究旨在探讨舞者在踮脚站立时的下肢关节协调性，以及关节协调性与肌肉协同激活的关系。7名芭蕾舞女演员用6种腿姿（5种古典舞姿和1种现代舞姿）踮脚站立10秒。收集跖趾（MP）、踝关节、膝关节和髋关节的运动数据，并对超过13块下肢肌肉进行表面肌电图（EMG）检查。主成分分析确定关节的协调性。mp -踝关节和踝关节-膝关节在矢状面呈同相协调，膝关节-髋关节在矢状面呈反相协调。此外，MP和踝关节周围的肌电-肌电相干性在50 Hz以内显著，当这两个关节同步摆动时。这表明不同的关节协调模式与不同的肌肉协同激活模式相关的神经处理有关。综上所述，与反相协调相比，芭蕾舞者表现出从MP到膝关节的相协调，这与更高频率域（高达50 Hz）的肌肉协同激活有关。
We aimed to investigate joint coordination of lower limbs in dancers during tiptoe standing and the relationship between joint coordination and muscle coactivation. Seven female ballet dancers performed tiptoe standing with six leg positions (fi e classical dance positions and one modern dance position) for 10 s. The kinematic data of the metatarsophalangeal (MP), ankle, knee, and hip joints was collected, and surface electromyography (EMG) of over 13 lower limb muscles was conducted. Principal component analysis was performed to determine joint coordination. MP–ankle and ankle–knee had in-phase coordination, whereas knee–hip showed anti-phase coordination in the sagittal plane. In addition, most EMG–EMG coherence around the MP and ankle joints was significant up to 50 Hz when these two joints swayed with in-phase. This suggests that different joint coordination patterns are associated with neural processing related to different muscle coactivation patterns. In conclusion, ballet dancers showed in-phase coordination from the MP to knee joints, which was associated with muscle coactivation to a higher frequency domain (up to 50 Hz) in comparison with anti-phase coordination.