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目的:观察模拟低住高练对女子赛艇运动员神经内分泌功能的影响。方法:6名女子赛艇运动员进行5周模拟低住高练。低氧实验室氧浓度为15·0%,常压条件下模拟海拔2500m高度。每周一、三、五在低氧实验室内各安排1次2小时的赛艇测功仪中等强度运动,以一般有氧耐力训练和有氧无氧混合性负荷为重点,血乳酸控制在3~5mmol/L,SaO2为82%~90%。其余为常氧环境下的水上训练。分别于实验前1周,实验第1、4、5周和实验结束后第2周,每周六早晨(7∶30左右)空腹安静状态下取肘静脉血,采用放射免疫法测定糖皮质激素(GC)、促肾上腺皮质激素(ACTH)、β-内啡肽(β-EP)的变化。结果:5周模拟低住高练期间,受试者血浆GC浓度改变不显著;实验第1周时受试者血浆ACTH和β-EP明显增加,实验第4周后逐渐下降。结果表明,模拟低住高练时机体的神经内分泌反应不同步。
Objective: To observe the effect of simulating low abilities training on neuroendocrine function of female rowers. Methods: Six female rowers simulated low living and training for 5 weeks. Oxygen laboratory oxygen concentration of 15.0%, atmospheric pressure simulated altitude of 2500m. Every Monday, Wednesday and Friday in the hypoxia laboratory arrangements for a 2-hour rowing dynamometer medium-intensity exercise to aerobic endurance training and aerobic, anaerobic mixed load focus, blood lactic acid control in 3 ~ 5mmol / L, SaO2 is 82% ~ 90%. The rest is water aerobic training environment. The venous blood of the elbow was taken at 1 week before the experiment, at the 1st, 4th and 5th week of the experiment and at the 2nd week after the experiment, on the morning of every Saturday morning (about 7:30 am), and the glucocorticoid (GC), adrenocorticotropic hormone (ACTH), β-endorphin (β-EP) changes. Results: At 5 weeks, the plasma GC concentration of the subjects did not change significantly. During the first week of the experiment, the plasma ACTH and β-EP were significantly increased, and gradually decreased after 4 weeks of experiment. The results showed that the body’s neuroendocrine reaction was not synchronized when simulated low living and training.