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目的观察空气负氧离子含量对肺功能较差大学生进行呼吸训练的影响效果。方法筛选肺功能较差的男性大学生90例,随机分为3组,每组30例,以空气负氧离子干预浓度的高低分为低含量组、中含量组和高含量组,3组入选者采用同样的训练手段进行呼吸训练。3组入选者每天进行1次呼吸训练,每次训练30分钟左右,共计持续训练12周。于入选时及经12周训练治疗后,分别对3组入选者的肺功能指标进行检测和比较。结果经12周训练治疗后,高浓度组的呼吸肌力量指标%MIP和%MEP值分别由训练治疗前的66.07±5.85和67.98±5.71改善为80.15±6.14和83.20±6.11,肺通气指标%SVC、%FVC、%FEV1和%MVV值也分别由治疗前的68.90±5.22、52.19±4.40、53.61±4.02和63.05±4.55改善为82.94±6.30、75.91±5.02、74.60±4.87和80.94±5.39,改善效果与其他两组相比表现最优。结论空气负氧离子含量的高低对呼吸功能训练的效果具有正相关,在高浓度空气负氧离子含量环境下进行训练,利于改善人体的呼吸肌力量及肺通气功能。
Objective To observe the effect of air negative oxygen ion content on respiratory training of undergraduates with poor lung function. Methods Ninety male college students with poor lung function were randomly divided into three groups (n = 30 in each group). The level of air negative oxygen ion intervention was divided into low-level group, middle-level group and high-level group. Use the same training methods for breathing training. Participants in the 3 groups were given breath training once a day for about 30 minutes each time, for a total of 12 weeks. At the time of enrollment and after 12 weeks of training, the lung function indexes of the three groups were tested and compared. Results After 12 weeks of training, the% MIP and% MEP values of the high concentration group were improved from 66.07 ± 5.85 and 67.98 ± 5.71 before training to 80.15 ± 6.14 and 83.20 ± 6.11 respectively, and the lung ventilation index% SVC ,% FVC,% FEV1 and% MVV also improved from 68.90 ± 5.22, 52.19 ± 4.40, 53.61 ± 4.02 and 63.05 ± 4.55 before treatment to 82.94 ± 6.30, 75.91 ± 5.02, 74.60 ± 4.87 and 80.94 ± 5.39, respectively The effect of the best performance compared with the other two groups. Conclusions The level of air negative oxygen ion concentration has a positive correlation with the training effect of respiratory function. Training in the environment with high concentration of air negative oxygen ions helps to improve the body’s respiratory muscle strength and lung ventilation function.