Basic Study of Proper Weight Management Following Childbirth Based on Automatic Nerve Activity in Women during Pregnancy and Childcare

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The purpose of this study is to obtain basic data for maintaining proper body weight by controlling obesity following childbirth. The levels of autonomic nerve activity and body composition were measured in pregnant and puerperal women by analyzing the power spectra of heat rate fluctuations. Results 1) Parasympathetic nerve activity decreased while sympathetic nerve activity increased in the third trimester as compared with the second trimester. 2) Increased body fat percentage, decreased muscle volume and increased autonomic nerve activity were confirmed following childbirth. The results of this study can be applied to the development of a proper weight management program for use after childbirth by monitoring BMI and bodycomposition starting one year after childbirth.