Abstract
The relationship between heart rate (HR) and oxygen consumption (V̇(O2)) has been investigated in a sample of 20 low-risk, term neonates aged 14-48 hrs. Repeated, simultaneous measurements of HR and V̇(O2) were performed on each neonate during each of three epochs ordered by increasing level of activity. A robust linear relationship was found between HR and V̇(O2), with an average correlation of .90. Substantial variation was observed across individuals in the slope of the HR-V̇(O2) regression line. This variation was curvilinearly related to ponderal index (PI), with low PI neonates having the shallowest and steepest slopes. These findings suggest that HR may provide a flexible, non-restrictive means of estimating neonatal V̇(O2) but that the impact of prenatal growth history and postnatal growth performance on the estimation of V̇(O2) from HR merits further investigation.
Original language | English (US) |
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Pages (from-to) | 558-560 |
Number of pages | 3 |
Journal | Psychophysiology |
Volume | 20 |
Issue number | 5 |
DOIs | |
State | Published - Sep 1983 |
Keywords
- Heart rate
- Neonate
- Oxygen consumption
ASJC Scopus subject areas
- Neuroscience(all)
- Neuropsychology and Physiological Psychology
- Experimental and Cognitive Psychology
- Neurology
- Endocrine and Autonomic Systems
- Developmental Neuroscience
- Cognitive Neuroscience
- Biological Psychiatry