[Sun, Yan] Cent China Normal Univ, Dept Phys Educ, Wuhan, Hubei, Peoples R China.^[Zhang, H. -X.] Zhejiang Jiaxing Vocat & Tech Coll, Dept Military Body Art, Jiaxing, Zhejiang, Peoples R China.^[Sun, Y. -F.] Zhengzhou Univ Light Ind, Dept Phys Educ, Zhengzhou, Henan, Peoples R China.