Ofori Ernest Kwesi, Subramaniam Savitha, Wang Shuaijie, Bhatt Tanvi
Department of Physical Therapy, University of Illinois at Chicago: 1919 W Taylor St., Chicago, Illinois 60612, USA.
J Phys Ther Sci. 2019 Sep;31(9):708-716. doi: 10.1589/jpts.31.708. Epub 2019 Sep 5.
[Purpose] To establish a quantitative kinematic assessment method for examining postural stability and physical mobility during dance-based exergaming. [Participants and Methods] Fifteen young adults participated in one session of dance-based exergaming assessment using segments from Kinect 'Just Dance 3' consisting of slow-, medium-, and fast-paced songs. A motion capture system was used to record full body kinematics, and a customized MATLAB code was used to compute the variables of interest, such as center of mass sway area, excursion, and peaks, as well as step count and joint excursions. [Results] Total center of mass sway area and excursion were significantly greater for slow-paced (total sway area=1,077.6 ± 209.9 cm; total excursion=629.8 ± 380.5 cm) and fast-paced (total sway area=314.1 ± 133.6 cm; total excursion=478.5 ± 149.0 cm) songs than for the medium-paced song (total sway area=212.9 ± 346.0 cm; total excursion=311.2 ± 119.5 cm). Joint excursion was greater for the knee (ranging from: (slow to fast-paced songs: 55.5°-83.1°) and hip (slow to fast-paced: 40.6°-50.4°) than for the ankle (slow to fast-paced: 32.2°-46.7°) for all three dance paces. Additionally, step count was significantly, positively correlated with song pace (r=0.52). [Conclusion] The current study was able to quantify and provide normative values for postural control and joint mobility among healthy young adults during dance-based exergaming with 3 hip-hop songs of different paces from the Microsoft Kinect 'Just Dance 3'. The results indicated that different paces (intensities) of dance songs corresponded to distinct movement kinematic trends, particularly with slow-paced song having the maximum center of mass excursion and lowest joint excursion, while fast-paced song exhibits the reverse, along with medium-paced song exhibiting the highest hip and ankle joint angle excursions, while the fast-paced song had increased knee joint angle excursions.
[目的]建立一种定量运动学评估方法，用于检查基于舞蹈的运动游戏过程中的姿势稳定性和身体活动能力。[参与者与方法]15名年轻人参与了一次基于舞蹈的运动游戏评估，使用了来自Kinect“Just Dance 3”的片段，包括慢节奏、中节奏和快节奏歌曲。使用动作捕捉系统记录全身运动学数据，并使用定制的MATLAB代码计算感兴趣的变量，如重心摆动面积、偏移量和峰值，以及步数和关节偏移量。[结果]慢节奏（总摆动面积=1077.6±209.9平方厘米；总偏移量=629.8±380.5厘米）和快节奏（总摆动面积=314.1±133.6平方厘米；总偏移量=478.5±149.0厘米）歌曲的总重心摆动面积和偏移量显著大于中节奏歌曲（总摆动面积=212.9±346.0平方厘米；总偏移量=311.2±119.5厘米）。在所有三种舞蹈节奏下，膝关节（慢节奏到快节奏歌曲：55.5°-83.1°）和髋关节（慢节奏到快节奏：40.6°-50.4°）的关节偏移量大于踝关节（慢节奏到快节奏：32.2°-46.7°）。此外，步数与歌曲节奏显著正相关（r=0.52）。[结论]本研究能够对健康年轻人在使用微软Kinect“Just Dance 3”中三首不同节奏的嘻哈歌曲进行基于舞蹈的运动游戏时的姿势控制和关节活动能力进行量化并提供规范值。结果表明，不同节奏（强度）的舞蹈歌曲对应着不同的运动运动学趋势，特别是慢节奏歌曲的重心偏移量最大且关节偏移量最小，而快节奏歌曲则相反，中节奏歌曲的髋关节和踝关节角度偏移量最大，而快节奏歌曲的膝关节角度偏移量增加。
