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THE PARAMETERS OF HEART
RATE VARIABILITY AT VARIOUS AGES Liu Lixiao1, Qu XF2, Huang YL2
2
Medical University, Harbin, China Objective: This study wanted to study the relations between the function of
autonomic nerve and Heart Rate Variability (HRV) at various ages. Methods: Persons are devided into three groups of children, adult and the
aged. They are monitored with 24-hour development electrocardiogram in daily
activities and analysed the parameters of HRV of time domain and frequency
domain. Results: 1. Children's parameters of time
domine of HRV-- standard deviation of interval of total normal sinus beat
(SDNN) are larger than that of adults’ and the aged. (SDNN children's group 151+41.1ms，adult's group 142+38.88ms
the aged group 130+29.90ms）2. The excitability of children's autonomic nerve or vegetative nerve (sympathetic and vago) is
higher than that of other groups of persons. 3. Time domain of HRV of the
aged group is smaller than that of other groups. （SDNN the aged group 130+29.90ms children's group 151+41.1ms，adult's group 142+38.88ms） Conclusion: Time domain of HRV drops in the aged group. Parameters of time domain
of HRV are negative relation with age. |
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