Development of Baby Circadian Rhythm during Breast FeePerspective on a Guidance for Child Careding Term :

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  • 授乳期における乳児の睡眠・覚醒リズムの発達 : 母児同期からみた授乳期の育児指導にむけて
  • ジュニュウキ ニ オケル ニュウジ ノ スイミン カクセイ リズム ノ ハッタツ ボジ ドウキ カラ ミタ ジュニュウキ ノ イクジ シドウ ニ ムケテ

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Abstract

Objective: This longitudinal study aims to evaluate baby's sleep/wake behaviors from the delivery day to the 15th postpartum week and the relation between the behaviors and the schedule of breast feeding by using sleep log and Actigrapth,and to make clear the usefulness of a child-rearing based on biorhythm in order to assist postpartum child-rearing. Method: Subjects were full-term 12 babies by normal delivery, weighing 3,028± 197g in primipara babies, and 2,989±216g in multipara babies, respectively. The mothers, of whom 7 are primipare as (28.1±3.13 years old), and 5 multiparas (29.4±3.21 years old) were instructed to record the sleep logs of themselves and their infants every ten minutes from the delivery day to the 15th postpartum week. In order to record activities of one primiparious mother, the actigraph was set on her non-dominant wrist for 12 days together and later once a month from the delivery day until the fifteenth postpartum week. Results: Breast feeding cycle was almost regular in the daytime but was different from mother to mother in the nighttime. It seemed that mother's sleep/wake rhythm was influenced by sleep termination and long wake time caused by being accustomed to breast feeding and caring after other children. It was suggested that mother's sleep/wake rhythm after a delivery was influenced by breast feeding rhythm, and was one of the important factors for promoting a circadian rhythm, and was helpful to the regulating of life cycle of a puerperal woman through accomplishment of breast feeding.

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