Chang Yao-Ting, Chang Jia-Hao, Huang Chen-Fu
a Department of Physical Education , National Taiwan Normal University , Taipei , Taiwan.
J Sports Sci. 2014;32(18):1698-703. doi: 10.1080/02640414.2014.915419. Epub 2014 May 13.
Push Hand is an advanced training technique for the Yang-style old frame 108 forms Tai Chi Chuan. It is performed by two practitioners. To clarify how people use forces during Push Hand training, it is important to review the ground reaction force (GRF). Here, we quantify the characteristics of the GRF during Push Hand training. Kinematic data and GRF data from 10 Tai Chi Chuan practitioners (29.9 ± 7.87 years) were synchronously recorded using a three-dimensional motion analysis system (200 frames · s(-1)) and three-dimensional force plates (1000 Hz). The resultant GRF for both feet for the 0%, 50% and 100% phases of attack and defence were compared to body weight using a paired-samples t-test. The differences in the resultant GRF between the 0%, 50% and 100% phases of attack and defence were tested by one-way repeated-measures ANOVA. The significance level was set to 0.05. The total resultant GRF was almost equal to the participant's body weight in push hand. This result was consistent throughout the entire push hand process. Our results revealed that the GRF was comparable to the body weight, implying that practitioners do not push or resist their opponents during the push hand process.
推手是杨式老架108式太极拳的一种高级训练技巧。它由两名练习者进行。为了阐明人们在推手训练中如何发力，回顾地面反作用力（GRF）很重要。在此，我们对推手训练期间地面反作用力的特征进行量化。使用三维运动分析系统（200帧·秒⁻¹）和三维测力板（1000赫兹）同步记录了10名太极拳练习者（29.9±7.87岁）的运动学数据和地面反作用力数据。使用配对样本t检验将攻防0%、50%和100%阶段双脚的地面反作用力合力与体重进行比较。通过单向重复测量方差分析测试攻防0%、50%和100%阶段地面反作用力合力的差异。显著性水平设定为0.05。在推手中，地面反作用力的总合力几乎等于参与者的体重。这一结果在整个推手过程中都是一致的。我们的结果表明，地面反作用力与体重相当，这意味着练习者在推手过程中不会推搡或抵抗对手。
