摘要
应用上医大生理教研室研制的“心率变异性频谱分析仪”，以Ｒ－Ｒ间距总变异性（ＴＶ）、低频成分（ＬＦ）、高频成分（ＨＦ）以及ＬＰ／ＨＦ比值为指标，对健康人不同年龄段、午饭前后及安静与心算时的心率变异性（ＨＲＶ）进行频谱分析，结果表明：健康女性６０岁以上，男性５０岁以上各年龄段ＴＶ较低龄段显著降低，女性３０岁以上各年龄段及男性５０－６０岁ＬＦ、女性２０岁以上及男性２１－５０岁各年龄段ＨＦ均较低龄段升高显著，女性２１－３０岁较１－１０岁ＬＦ／ＨＦ降低显著；午饭后ＴＶ均较饭前显著降低，心算时ＬＦ显著升高，ＨＦ显著降低，≥４０岁组心算时ＬＦ／ＨＦ显著升高。结果提示：健康人高龄段调控心脏的自主神经整合功能显著降低，健康人的交感、迷走神经活动在不同年龄段有着不同的变化；健康成人午饭后自主神经整合功能显著降低；心算时交感神经活动显著增强，迷走神经活动显著降低，≥４０岁组心交感神经活动增强尤为显著。
? Heart rate variability(HRV) spectral analysis was detected in healthy volunteers with different age, and the influence of lunch and arithmetic were also studied. The results indicated that the total variance(TV) in old age groups was markedly lower than that of young age groups, while low frequency(LF) in female (over 30 years old) and male (5060 years old), high frequency(HF) in female (over 20 years old) and male (2150 years old) were significantly increased; There was also a significant decrease of TV after lunch; The LF increased and HF decreased markedly during mental arithmetic. The above results show that the integrative function of autonomic nervous system reduced significantly in old persons and after lunch in healthy adults. The sympathetic activity(SA) in elder female and parasympathetic activity(PA) in 2050 years old persons increased markedly while PA in female (2130 years old) is predominant in compare to SA; During mental arithmetic, SA, particularly in adults above 40 years old significantly increased, while PA decreased markedly.
出处
《中国应用生理学杂志》
CAS
CSCD
1998年第1期74-77,共4页
Chinese Journal of Applied Physiology
关键词
心率变异性
频谱分析
年龄
进食
精神紧张
heart rate variability
spectral analysis
healthy volunteers
age
lunch
mental arithmetic
