间歇性常压低氧训练对心率变异的影响  

Effects of Intermittent Normobaric Hypoxia Training on Heart Rate Variability.

作　　者：许欣[1] 鲁力立[1] 陈章煌[1] 刘向昕[1] 李勇枝[1] 

机构地区：[1]航天医学工程研究所,北京100094

出　　处：《航天医学与医学工程》2004年第5期334-339,共6页Space Medicine & Medical Engineering

基　　金：中国载人航天工程资助项目

摘　　要：目的观察间歇性常压低氧 (intermittentnormobarichypoxia ,INH)训练对低氧条件心率变异的影响。方法对 8名被试者进行为期 4周共 2 4d的INH训练 ,并对被试者训练前后暴露于 1 0 %低氧环境前、中、后的心率变异指标进行对比分析。结果经INH训练后 ,被试者低氧条件下R R间期均值、标准差、总功率、高频成分功率、低频成分功率显著增高 (P <0 .0 5～P <0 .0 0 1 ) ,而标准化高频成分功率、标准化低频成分功率、低频成分功率 /高频成分功率变化不明显。结论 1 )INH训练可提高被试者低氧条件下的心率变异性 ;2 )INH训练不仅可用于提高低氧耐受力 。Objective To observe the influences of intermittent normobaric hypoxia (INH) training on heart rate variability (HRV) under hypoxia. Method Eight subjects were trained with INH for 4 weeks (24 d), subjects′ HRV level,recorded during exposure to hypoxia(10% O 2) before and after the training,were compared and analyzed. Result After the INH training, average of normal to normal Intervals (R-R), standard deviation of normal to normal Intervals (SDNN), total power (TP), high frequency (HF) and low frequency (LF) increased significantly during hypoxia (P<0.05～P< 0.001); normalized low frequency (LFn), normalized high frequency (HFn) and LF/HF showed no significant change. Conclusion 1)INH training can increase subjects′ HRV under hypoxia;2) INH training can not only be used to increase the tolerance to hypoxia, but it is also good for increasing astronaut′s flying tolerance under special environment.

关 键 词：常压低氧 间歇性 心率变异 自主神经系统 训练 

分 类 号：R852.12[医药卫生—航空、航天与航海医学] R856.5[医药卫生—临床医学]