24h睡眠剥夺后作业效率与心率变异性的变化  

Changes of Work Efficiency and Heart Rate Variability after 24h Sleep Deprivation

作　　者：李津强[1] 胡文东[1] 文治洪[1] 马进[1] 

机构地区：[1]第四军医大学航空航天医学系,陕西西安71003

出　　处：《现代生物医学进展》2008年第6期1105-1107,1113,共4页Progress in Modern Biomedicine

摘　　要：目的:探索24h睡眠剥夺(Sleep Deprivation,SD)后作业效率和心率变异性的变化。方法:通过观察8名健康男性在24h睡眠剥夺前后的作业效率、主观脑力负荷和心率变异性的变化,寻找与脑力疲劳相关的敏感指标。结果:在24h睡眠剥夺后,NASA-TLX评分呈显著性增加(p<0.05),75°立位时HF呈显著性减少(p<0.05),TINN、LF/HF呈显著性增加(p<0.05)。结论:NASA-TLX量表从主观感受上很好的反映了脑力疲劳后工作绩效下降的变化,HRV的变化主要原因在于24h SD后迷走神经活性降低,交感神经相对加强。Objective To explore the changes of work efficiency and heart rate variability after 24 h sleep deprivation（SD）. Method The changes of the work efficiency, subjective mental workload and heart rate variability of 8 healthy males after 24h SD were detected. And the sensitive indexes related to the brain fatigue were investigated among them. Results After 24h SD, NASA- TLX significantly increased（p〈0.05）. HF significantly decreased（p〈0.05）.TINN and LF/HF significantly increased（p〈0.05） in 75° clinism. Conclusion The results of NASA-TLX could objectively reflect the decrease of work efficiency after brain fatigue. The main reason of HRV change is the activity of vagus nerve deceasing and sympathetic nerve increasing.

关 键 词：睡眠剥夺 脑力疲劳 NASA—TLX 心率变异性 体位 

分 类 号：R331.36[医药卫生—人体生理学]