富氧室对高原人体运动血乳酸、血氨及肌红蛋白的影响

EFFECTS OF OXYGEN-ENRICHED ROOM ON THE CONTENT OF BLOOD LACTIC ACID, AMMONIA AND MYOGLOBIN AT HIGH ALTITUDE

目的 :探讨在高原建立富氧室对机体运动后肌肉代谢产物的影响。为研究部队在高原运动中抗疲劳措施提供科学依据。方法 :对海拔 370 0m高原的 10名健康青年在进入富氧室前后分别进行功率自行车递增负荷运动 ,检测血乳酸、氨、肌红蛋白含量 ,并以安静时作对照。结果 :安静时血乳酸、氨和肌红蛋白分别为 (1.6 8± 0 .4 2 )mmol·L 1、(5 3.6 8± 5 .4 2 ) μg·L 1和 (6 6 .2 7± 10 .88) μg·L 1,均低于进入富氧室前运动后的数值 (P <0 .0 1)。富氧后运动后的血乳酸与氨分别为 (6 .38± 0 .5 3)mmol·L 1与 (6 6 .71± 6 .5 3) μg·L 1,非常显著低于富氧前运动后的 (7.5 2± 0 .6 9)mmol·L 1与 (82 .0 9± 7.94 ) μg·L 1,(P <0 .0 1) ,而富氧后运动后的肌红蛋白 (86 .96± 17.0 2 ) μg·L 1,显著低于富氧前运动后的 (10 8.5 3± 17.98) μg·L 1,(P <0 .0 5 )。结论 :高原富氧室能增强机体能量代谢 ,减轻体力性疲劳 ,是一种较为理想的高原供氧途径。

Objective: To explore the effects of oxygen-enriched room on muscular metabolites at 3 700 m altitude so as to provide scientific basis for studying anti-fatigue measures after exercise at high altitude. Method: 10 subjects performed incremental exercise on bicycle before and after entering oxygen-enriched room, and their blood lactic acid,ammonia and myoglobin contents were determined. Results: The contents of lactic acid, ammonia and myoglobin in rest control〔(1.68±0.42)mmol·L 1 ,(53.68±5.42)μg·L 1 and (66.27±10.88)μg·L 1 respectively〕 were lower than those before and after entering the oxygen-enriched room and after exercise(P<0.01).The blood lactate, ammonia after entering the oxygen enriched room and exercise 〔(6.38±0.53)mmol·L 1 and(66.7±6.53)μg·L 1 respectively〕were very significantly lower than those before entering the O 2-enriched room and after exercise 〔(7.52±0.69)mmol·L 1 and (82.09±7.94) μg·L 1 ,P<0.01〕;the former myoglobin〔(86.96±17.02)μg·L 1 〕was also significantly lower than that of the latter〔(108.53±17.98)μg·L 1 ,P<0.05〕.Conclusion: Installing an oxygen-enriched room at high altitude is an ideal way to supply oxygen, which may improve human body energy metabolism and reduce physical fatigue.