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- W2089053708 abstract "Time patterns of activity-rest rhythms during and after pregnancy are increasingly recognised as important factors for the well-being and health of young families. This longitudinal study examined activity-rest patterns of couples during late pregnancy and subsequently the alterations in the periodic structure of parental and neonatal time patterns during the first four months after birth. Part I concentrates on the effects of late pregnancy and birth to the mother's rest-activity patterns and those of the father and, after birth, what time pattern the infant developed. Part II attempts to clarify how activity patterns of the entire family agree or disagree with each other and investigates how the infant synchronises with the environment that includes the process of parent-infant interaction. Activity data of, so far, seven families (father, mother and child) were continuously recorded using non-invasive Actiwatch units. Recordings of parental activity started at the beginning of the 37th week of gestation, and were continued in parallel with the infants' recordings in three series of three weeks each until four months after birth: 1st to 3rd week, 7th to 9th week and 13th to 15th week of life. In a standardised diary, record was kept of household routines, parental activities, type of feeding, initiation of sleep or waking up. Activity data of seven non-pregnant women were collected and used as a control. Irregular nocturnal activity epochs occurred frequently in pregnant women and were absent in non-pregnant women. Period lengthenings and shortenings of the circadian rhythms appeared in both parents from prepartum to postpartum. Activity at night increased from prepartum to postpartum in mothers and fathers. Three infants showed a marked circadian rhythm between day 3 and 14 after birth. All seven infants showed a predominant circadian rhythm between day 8 and 19 after birth. The onset of daytime activity of mothers and their infants corresponded well to each other. Postpartum frequency spectra of parents and child always had some ultradian components in common. Time patterns of activity-rest rhythms of couples and parents are shown to be altered during and after pregnancy and we suggest that the infants' adaptation to the environment begins during the first week that includes the process of mother-infant interaction." @default.
- W2089053708 created "2016-06-24" @default.
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- W2089053708 date "2000-12-01" @default.
- W2089053708 modified "2023-09-27" @default.
- W2089053708 title "Circadian and Ultradian Time Patterns in Human Behaviour: Part 1: Activity Monitoring of Families from Prepartum to Postpartum" @default.
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- W2089053708 doi "https://doi.org/10.1076/brhm.31.5.581.5658" @default.
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