Impacts of high-altitude training on self-organizing adaptation in swimming athletes before competition: analysis with compressed spectral array electroencephalogram
- VernacularTitle:赛前高原训练对游泳运动员自组织适应状态的影响:脑电压缩谱分析
- Author:
Liya LIN
;
Li ZHANG
;
Shuxun DENG
;
Jie LI
- Publication Type:Journal Article
- From:
Chinese Journal of Tissue Engineering Research
2005;9(40):176-179
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND: High-altitude training before competition aims to obtain maximum hypoxia physiological adaptability of athletes through hypoxia environmental irritation at high altitude. Physiological adaptability to high al titude is the substantial foundation for function improvement of athletes,reflecting adjustment of body to environmental changes.OBJECTIVE: In views of self-regulation, practical training and compressed spectral array (CSA) electroencephalogram (EEG), and by observing adaptive change rule of brain before (before competition) and after high-altitude training of swimming athletes, the influence of high-altitude training was analyzed systematically on self-organizing state of athletes before competition so as to probe into the impacts of high-altitude training from brain level.DESIGN: Randomized investigation.SETTING: Guangdong Scientific Institute of Physical Exercise and Physical Exercise College of South China Normal University.PARTICIPANTS: Nine swimming athletes were selected from Guangdong Swimming Team from March to April 2001.METHODS: Time-order observation was applied in the experiment, in which, the results 1 week (3rd March) before high-altitude training, during (22nd March) and on the 5th day (5th April) after the training, the results in competition on the 13th day (12th April) after high-altitude training and corresponding blood lactic acid were tested and SCA EEG was done successively one day before high-altitude training (10th March), on the 1st day after the training (30th March) and on the 11th day after training, that was two days before National Competition (10th April) to observe self- adaptive regulation of brain to sports training load.MAIN OUTCOME MEASURES: ① Training index and lactic acid change before and during high-altitude training and before competition. ②Comparison of results before high-altitude training and in competition. ③Changes in indexes of cerebral evaluation before, during and after high-altitude training and before competition.RESULTS: ① Training results were changeable in high-altitude training.In national competition after high-altitude training, the scores of 6 cases of 10 person-times were reduced. Changes in blood lactic acid after high-altitude training were in conformity with training results. ② After high-altitude training, the average frequency of brain information distribution in athletes was shifted towards high frequency. Before the competition, negative entropy was lessened and information entropy was dispersed and the score in competition was declined.CONCLUSION: ① Cerebral order parameters of athletes constitute multicentralization, form the dispersion of technique control information and result in re-adjustment of brain function at matrix coordinating level, suggesting declining capacity to athletics. ② Effects of high-altitude training and maintaining of its functions are based on coincidence and continuity of arrangement of rise-fall training intensity of individual state and on the recovery and maintaining of the intensity at flatlands.
