Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (37): 6977-6980.doi: 10.3969/j.issn.1673-8225.2011.37.032

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Establishment of a speculative equation for fast twitch muscle fiber in junior sportsmen

Hua Yan   

  1. College of Physical Education, Qinzhou University, Qinzhou 535000, Guangxi Zhuang Autonomous Regeion, China
  • Received:2011-01-17 Revised:2011-03-16 Online:2011-09-10 Published:2011-09-10
  • About author:Hua Yan★, Master, Lecturer, College of Physical Education, Qinzhou University, Qinzhou 535000, Guangxi Zhuang Autonomous Regeion, China 17399097@qq.com
  • Supported by:

    Scientific Research Program of Qinzhou University, No. 2010XYKY-19B*

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Abstract:

BACKGROUND: ATPase staining is one of methods used for direct determination of muscle fiber type, but the measurement procedure is tedious and can be hardly used for large sample size measurement.
OBJECTIVE: To establish a speculative equation for fast twitch muscle fiber in junior sportsmen.
METHODS: A total of 229 subjects aged 13-17 years from different Guangxi regions and Sports School in Qinzhou were included in this study and were randomly divided into three groups: equation (n=160), testing (n=39) and generalization (n=30). The measurement results of ATPase staining from 299 subjects were compared with those from Liu Rui-lian and Yue Jun. The stepwise regression analysis was performed taking the percentage of fast twitch muscle fiber measured by ATPase staining as the dependent variables and taking partial body quality and functional indexes as the in independent variables to establish the speculative equation of fast twitch muscle fiber.
RESULTS AND CONCLUSION: The speculative equation on fast twitch muscle fiber in junior sportmen was as follows: FT% = 10.561 7-9.032 0×(60-meter running, s) -0.169 0×(in situ jump height, cm) + 0.313 5× (the highest anaerobic power, kg•m/min). There were no significant differences between the checking results in testing groups and the average means of ATPase staining (P=0.150 0), and ATPase staining also had no significant difference with the verifying results in the generalization group(P=0.234 0). Results showed that the speculative equation for fast twitch muscle fiber in junior sportsmen is highly accurate and scientific.

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