Yoshida Yasuyuki, Bizokas Arunas, Demidova Katusha, Nakai Shinichi, Nakai Rie, Nishimura Takuichi
Human Augmentation Research Center, National Institute of Advanced Industrial Science and Technology, Chiba, Japan.
Non-affiliated, Fairfield, CT, United States.
Front Sports Act Living. 2022 Jul 22;4:941042. doi: 10.3389/fspor.2022.941042. eCollection 2022.
To evaluate competitive ballroom dancing, one of the official events of the World Games, spin movements used by advanced dancers who ranked high in actual competition may be employed. The purpose of this study was to investigate the kinematic characteristics of spin movements in competitive ballroom dancing performed by world champion couples, especially holding posture and lower limb movements. A champion couple and 13 national-level competitive ballroom dancers as the control group participated in this study. An inertial measurement unit (IMU) system (MVN Link; Xsens, Netherlands) consisting of 17 IMUs, attached to feet, shanks, thighs, pelvis, sternum, head, upper arms, forearms, and hands of the dancers, was used to obtain three-dimensional kinematic data at 240 Hz. The overall trend was that the actual and normalized stride lengths of the champion male and female dancers tended to be longer than those of the male and female dancers in the control group. Further, large differences were observed in the pelvic and rib cage segments movements, and the relative angle of the rib cage segment to the pelvic segment. The champion male dancer started to move from the pelvic segment, whereas the champion female dancer and the national-level top male and female dancers started to move from the rib cage segment. During the spin movement, the champion male dancer was in a position where the rib cage segment was rotated to the left with respect to the pelvic segment, whereas the other dancers were in a position where the rib cage segment was rotated to the right. Although limited to technical aspects, these dance kinematic characteristics of the world champion couples and their differences from those of the control group dancers, will be helpful to competitive ballroom dancers and coaches in their daily practice.
为了评估竞技交谊舞（世界运动会的官方赛事之一），可以采用在实际比赛中排名靠前的高级舞者所使用的旋转动作。本研究的目的是调查世界冠军组合在竞技交谊舞中旋转动作的运动学特征，特别是握持姿势和下肢动作。一对冠军组合和13名国家级竞技交谊舞舞者作为对照组参与了本研究。使用由17个惯性测量单元（IMU）组成的惯性测量单元（IMU）系统（MVN Link；Xsens，荷兰），将其附着在舞者的脚、小腿、大腿、骨盆、胸骨、头部、上臂、前臂和手上，以240Hz的频率获取三维运动学数据。总体趋势是，冠军男女舞者的实际步幅和归一化步幅往往比对照组的男女舞者更长。此外，在骨盆和胸廓节段的运动以及胸廓节段与骨盆节段的相对角度方面观察到了很大差异。冠军男舞者从骨盆节段开始移动，而冠军女舞者以及国家级顶尖男女舞者从胸廓节段开始移动。在旋转动作过程中，冠军男舞者处于胸廓节段相对于骨盆节段向左旋转的位置，而其他舞者处于胸廓节段向右旋转的位置。尽管仅限于技术方面，但世界冠军组合的这些舞蹈运动学特征及其与对照组舞者的差异，将有助于竞技交谊舞舞者和教练在日常训练中。
