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And this from Medline - Toby
Newborns' sleep-wake patterns: the role of maternal,
delivery and infant
factors.
AUTHOR:
Sadeh A; Dark I; Vohr BR
AUTHOR
AFFILIATION:
Department of Psychology, Tel-Aviv University, Israel.
[log in to unmask]
SOURCE:
Early Hum Dev 1996 Feb 23;44(2):113-26
NLM CIT. ID:
96351176
ABSTRACT:
OBJECTIVE: The purpose of this study was to assess the
sleep-wake
patterns of fullterm (> or = 37 weeks) newborns and to
evaluate the effects
of specific factors including maternal gestational
diabetes, infant size and
anthropometric measures, gender, gestational age and
delivery variables.
METHODS: Two-hundred twenty newborns were studied in the
hospital
nursery for a continuous 24-h period with miniature
activity monitors
attached to the infants' ankles. The sample consisted of
102 infants of
gestational diabetic mothers (IGDM) and 118 controls.
Anthropometric
measurements were obtained and maternal and infant
characteristics were
recorded. RESULTS: The newborns had a discernible diurnal
sleep pattern
and slept twice as much during the nighttime as daytime
hours (P <
0.001). Higher skinfold measurements correlated
significantly with
increased quiet and motionless sleep (P < 0.05) for the
IGDM but not for
controls. Sleep of infants born at later gestational ages
was characterized
by increased percent of quiet and motionless sleep (P <
0.0001). No direct
gender effects were identified. CONCLUSIONS: Multiple
factors were
associated with the sleep-wake patterns of the newborns
on our study
cohort including maternal glucose values during
pregnancy, increased
measures of adiposity in IGDM, increased gestational age,
mode of
delivery and delivery Sequence. Investigation of the
sleep-wake
characteristics of neonates using activity monitors is a
noninvasive
method for gaining new understanding of the relationships
between sleep
wake activity patterns and infant characteristics.
MAIN MESH
SUBJECTS:
Circadian Rhythm/*PHYSIOLOGY
*Delivery
Diabetes, Gestational/*PHYSIOPATHOLOGY
Infant, Newborn/*PHYSIOLOGY
Sleep/*PHYSIOLOGY
Wakefulness/*PHYSIOLOGY
ADDITIONAL
MESH
SUBJECTS:
Adult
Analysis of Variance
Anthropometry
Female
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