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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 investigate the effect of establishing oxygen-enriched chamber on muscle metabolites after exercise in the plateau. It provides a scientific basis for studying the anti-fatigue measures of the troops in the plateau movement. Methods: Ten healthy young people at altitude of 370 0m were involved in progressive exercise of power bicycle before and after entering the oxygen-enriched room. Blood lactic acid, ammonia and myoglobin contents were measured before and after quiet time. Results: The levels of serum lactate, ammonia and myoglobin were (1.6 8 ± 0.42) mmol·L 1, (5 3.6 8 ± 5.42) μg · L 1 and (6 6 27 ± 10 .88) μg · L 1, both lower than that before entering the oxygen-enriched chamber (P <0.01). After lactation, the blood lactic acid and ammonia were (6 .38 ± 0. 53) mmol·L 1 and (6 6 .71 ± 6. 5 3) μg · L 1, respectively, which were significantly lower than those before oxygen enrichment (7.5 2 ± 0. 6 9) mmol·L 1 and (82.9 ± 7.94) μg · L 1, P <0.01 after exercise, while the levels of myoglobin 86.96 ± 17.0 2) μg · L 1, which was significantly lower than that before exercise (10 8.53 ± 17.98) μg · L -1 (P <0.05). Conclusion: The plateau oxygen chamber can enhance the body’s energy metabolism and reduce physical fatigue, which is an ideal plateau oxygen supply pathway.