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Int J Clin Exp Med 2013;6(8):712-715
Original Article
The effect of pre-competition training on biochemical indices and immune function
of volleyball players
Ji-Qing Xing, Yang Zhou, Wei Fang, Ai-Qing Huang, Shang-Bing Li, Shu-Hong Li, Li-Min Ruan
Department of Sports, Harbin Engineering University, Harbin 150001, Heilongjiang Province, China; Department of Radiology, The
Third Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China; Department of Sports, Harbin
Finance University, Harbin 150001, Heilongjiang Province, China
Received July 17, 2013; Accepted August 18, 2013; Epub September 1, 2013; Published September 15, 2013
Abstract: Objective: Pre-competition sports training can have varying effects on an athlete’s immune function, including causing
reduced resistance. The aim of this study was to explore effects of pre-competition training on some biochemical indices and
immunologic functions in top-level volleyball athletes to determine whether training should be modified for optimal health. Methods:
Biochemical indices (Hb, BUN, CK, LDH) and immunologic function (IgA, IgG, IgM, CD3+, CD4+, CD8+) were detected by
semiautomatic biochemistry analyzer, light scattering photometer, or flow cytometry in sera from 24 top-level volleyball athletes and
compared before and after pre-competition training. Results: After training, the levels of Hb, IgA, IgG, IgM, and CD4+ and the
CD4+/CD8+ ratio decreased significantly, while BUN, CK, LDH, and CD8+ increased significantly (P < 0.05). Further, the decrease in
Hb levels in female athletes was more significant than that in male athletes (P < 0.05). Conclusions: These results indicate that pre-
competition training affects biochemical indices and immunologic function in this group of athletes. Additionally, more dramatic
changes in Hb in female athletes may indicate a need for adapted training loads and rest periods for females. (IJCEM1307015).
Keywords: First-grade volleyball athlete, biochemical indexes, immunologic function
Address correspondence to: Ji-Qing Xing, Department of Sports, Harbin Engineering University, Nantongdajie 145, Nangang District,
Harbin 150001, Heilongjiang Province, China. E-mail: xingjiqing@hrbeu.edu.cn; xingjq150001@126.com
Original Article
The effect of pre-competition training on biochemical indices and immune function
of volleyball players
Ji-Qing Xing, Yang Zhou, Wei Fang, Ai-Qing Huang, Shang-Bing Li, Shu-Hong Li, Li-Min Ruan
Department of Sports, Harbin Engineering University, Harbin 150001, Heilongjiang Province, China; Department of Radiology, The
Third Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China; Department of Sports, Harbin
Finance University, Harbin 150001, Heilongjiang Province, China
Received July 17, 2013; Accepted August 18, 2013; Epub September 1, 2013; Published September 15, 2013
Abstract: Objective: Pre-competition sports training can have varying effects on an athlete’s immune function, including causing
reduced resistance. The aim of this study was to explore effects of pre-competition training on some biochemical indices and
immunologic functions in top-level volleyball athletes to determine whether training should be modified for optimal health. Methods:
Biochemical indices (Hb, BUN, CK, LDH) and immunologic function (IgA, IgG, IgM, CD3+, CD4+, CD8+) were detected by
semiautomatic biochemistry analyzer, light scattering photometer, or flow cytometry in sera from 24 top-level volleyball athletes and
compared before and after pre-competition training. Results: After training, the levels of Hb, IgA, IgG, IgM, and CD4+ and the
CD4+/CD8+ ratio decreased significantly, while BUN, CK, LDH, and CD8+ increased significantly (P < 0.05). Further, the decrease in
Hb levels in female athletes was more significant than that in male athletes (P < 0.05). Conclusions: These results indicate that pre-
competition training affects biochemical indices and immunologic function in this group of athletes. Additionally, more dramatic
changes in Hb in female athletes may indicate a need for adapted training loads and rest periods for females. (IJCEM1307015).
Keywords: First-grade volleyball athlete, biochemical indexes, immunologic function
Address correspondence to: Ji-Qing Xing, Department of Sports, Harbin Engineering University, Nantongdajie 145, Nangang District,
Harbin 150001, Heilongjiang Province, China. E-mail: xingjiqing@hrbeu.edu.cn; xingjq150001@126.com
