| （1.School of Physical Education，South China University of Technology，Guangzhou 510641，China；2.School of Sports Sciences，Shanghai Universaity of Sport，Shanghai 200438，China） Abstract: In order to study before-competition body weight control and the changes of sports capacity and body fluid ions, by basing their research objects on 6 excellent male free combat players in Shanghai, the authors meas-ured the body fat rate 3 times every week, and the anaerobic sports capacity and body fluid ions once every two weeks, and revealed the following findings: in the 3rd week, the body weight and body fat rate decreased signifi-cantly (P<0.05); in the 5th week, the body weight had a very significant change (P<0.01) and the body fat rate and lean body weight had a significant change (P<0.05); the anaerobic sports capacity had no significant change (P>0.05) in the entire process of body weight controlling; in the 3rd week, the concentration of Na+ increased very significantly (P<0.01), the concentration of Ca2+ increased significantly (P<0.05), the concentration of CO2CP de-creased (P<0.05); in the 5th week, the concentration of Na+ decreased somewhat but was still higher than that before body weight controlling (P<0.05), the concentration of Ca2+ increased significantly (P<0.05), the concentration of CO2CP decreased significantly (P<0.01). The said findings indicated that prolonging the time for after-exercising activities and increasing the time of aerobic training classes can realize player body weight control mainly based on consuming fat, and ensure that the players have no loss of their anaerobic sports capacity, while supplementing elec-trolyte drinks can maintain the stability of the internal body environment of the players.
Key words: sports biochemistry；body weight control；sports capacity；ionic equilibrium；free combat；player |
