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| 湿热环境下运动对人体血尿素、血乳酸和电解质的影响 | |
| 引用本文： | 吴潇男,林建棣,曲平,包瀛春,孟苏萍.湿热环境下运动对人体血尿素、血乳酸和电解质的影响[J].体育学刊,2012(5):135-139. |
| 作者姓名： | 吴潇男 林建棣 曲平 包瀛春 孟苏萍 |
| 作者单位： | 1. 军事体育进修学院,广东 广州 510500 2. 第二军医大学,上海 200438 3. 西安通信学院,陕西 西安 710706 |
| 基金项目： | 国家社科基金军事学项目(10GJ163-031) |
| 摘 要： | 通过对湿热环境下机体血液成分变化特点的实验,试图揭示湿热环境下运动的身体适应,为训练提供相应的理论依据。随机抽取某大学男生30名,平均年龄(21.3±1.1)岁。实验选择第二军医大学湿热环境训练实验室,环境温度控制在39℃,相对湿度为80%。实验历时9 d,分为测试阶段和训练阶段:测试阶段在训练前、后1 d分别进行12 min功率自行车测试,2次测试前、后经上肢静脉取血(在肛温指标测试后即刻进行);训练阶段周期为7 d,运动负荷为:踏步机徒手踏步15 min,艾威BC4730-52型功率自行车无阻力运动15 min,艾威BC8500型功率自行车调至10LEVEL-280WATT/H运动15 min。结果显示:与第1次、第2次测试前相比,2次测试后血清尿素(BU)、乳酸(La)、K+]和Ca2+]均显著升高(P<0.05),Cl-]显著下降(P<0.05);Na+]在第2次测试后显著升高(P<0.05)。经过7 d热习服训练,第2次测试前较第1次测试前相比,BU和Na+]显著升高(P<0.05),La浓度显著下降(P<0.05);第2次测试后同第1次测试后相比,BU、Na+]、K+]和Ca2+]显著升高(P<0.05)。结果表明:经过7 d间断性反复热暴露运动后,机体蛋白质代谢供能有所回降;La清除能力得到提高;血液电解质各项指标发生不同程度变化,但均处于正常生理范围及人体耐受范围内;且运动能力及自我感受得到改善,说明习服训练有利于机体新的热反应动力定型建立。 |
| 关 键 词： | 运动生物化学 湿热环境 运动 血清 热应激 热习服 |
Effects of exercising in a hot and humid environment on blood urea,blood lactic acid and electrolyte of the human body |
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| WU Xiao-nan,LIN Jian-di,QU Ping,BAO Ying-chun,MENG Su-ping.Effects of exercising in a hot and humid environment on blood urea,blood lactic acid and electrolyte of the human body[J].Journal of Physical Education,2012(5):135-139. | |
| Authors: | WU Xiao-nan LIN Jian-di QU Ping BAO Ying-chun MENG Su-ping |
| Institution: | 1(1.Physical Education of PLA,Guangzhou 510500,China;2.Second Military Medical University, Shanghai 200438,China;3.Xi’an Communication Institute of PLA,Xi’an 710706,China) |
| Abstract: | The authors tried to reveal the adaptation of the body exercising in a hot and humid environment through an experiment studying the characteristics of changing of blood constituents of the body in a hot and humid envi-ronment,so as to provide corresponding theoretical criteria for training.The authors selected 30 males students with an average age of(21.3±1.1) randomly from a university.The experiment was done in the hot and humid environ-ment training laboratory of Second Military Medical University,where the ambient temperature was controlled to 39 ℃,the relative humidity was 80%.The experiment lasted 9 d,which were divided into a testing stage and a training stage;at the testing stage,a 12 min speed bike test was run 1 d before and after training respectively;before and after the two tests,venous blood was taken from upper limbs(immediately after rectal temperature index was tested);the cycle of the training stage is 7 d,the exercising loads were 15 min of hand free walking on a treadmill,15 min of resistance free exercising on a model BC4730-52 EVERE speed bike,15 min of exercising on a model BC8500 EVERE speed bike which was adjusted to 10LEVEL-280WATT/H.The results showed the followings: as compared with the results before the first and second tests,blood urea(BU),lactic acid(La), and after the two tests increased significantly(P<0.05), decreased significantly(P<0.05); increased significantly(P<0.05) after the second test;after 7 days of heat acclimatization training,as compared with the results before the first test,BU and before the second test increased significantly(P<0.05),La concentration decreased signifi-cantly(P<0.05);as compared with the results after the first test,BU,, and after the second test in-creased significantly(P<0.05).The results indicated the followings: after 7 d of intermittent,repeated heat exposure exercising,the body’s protein metabolism and energy supply decreased somewhat;La removing ability was en-hanced;various indexes in blood electrolyte changed to different extents,but they were all in range of normal physiology and the range tolerable to the human body;and the exercising ability and self perception were improved,which indicates that heat acclimatization training is conducive for the body to establish a new dynamic stereotype of thermal reaction. |
| Keywords: | sports biochemistry hot and humid environment exercising serum heat stress heat acclimatization |
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