[1] Zhaoqing Univ, Sch Sports & Hlth, Zhaoqing 526061, Peoples R China
[2] Guangdong Polytech Sci & Technol, Sch Marxism, Zhuhai 519090, Peoples R China
[3] City Univ Macau, Sch Educ, Taipa 999078, Macao, Peoples R China
[4] Tianshui Normal Univ, Fac Teacher Educ, Tian Shui, Gansu, Peoples R China