Why the study?
How do heart period and high-frequency heart period variability change developmentally from 4 months to 4 years of age?
Population
Longitudinal sample of infants and children assessed at 4, 9, 14, 24, and 48 months of age
Design
Cohort
Follow-up
48 months
Authors
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Developmental norms support age-adjusted HRV bands by four years in research; hypothesis-generating and should not yet change clinical practice.
How do heart period and high-frequency heart period variability change developmentally from 4 months to 4 years of age?
Heart period and high-frequency heart period variability significantly increase from 4 months to 4 years of age, indicating that shorter analysis epochs may be used for younger infants and that the standard infant high-frequency band reaches its limit around age four.
Bar‐Haim et al. (2000) studied this question.
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