Journal of Nippon Medical School: Vol.69 No.4 page.373

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ArticleTitle Resting Energy Expenditure in Pregnant Japanese Women

AuthorList Hiromitsu Chihara, Yasuo Otsubo and Tsutomu Araki

Affiliation Department of Obstetrics and Gynecology, Nippon Medical School

Language EN

Volume 69

Issue 4

Year 2002

Page 373-375

Received January 28, 2002

Accepted March 29, 2002

Keywords resting energy expenditure, indirect calorimetry, pregnancy

Abstract The subjects were 160 pregnant women with no complications who were examined with indirect calorimetry by a single observer; 20 healthy age-matched non-pregnant women were used as controls. Assessment was performed 12 hours after oral intake of food. Each measurement of resting energy expenditure divided by the body surface area was analyzed and compared with that of the controls. In pregnant women, the mean resting energy expenditure divided by the body surface area did not significantly increase until 32 weeks' gestation. Energy expenditure increased significantly by about 300∼600 kJ/m² between before 31 weeks' gestation and the end of pregnancy. Significant changes occurred in the 32∼35 and 36∼40 weeks' gestational stages (3,790±370,4,110±385 kJ/m²) (p <0.05). Resting energy expenditure increases at conception, and does not increase until 32 weeks' gestation, but increases gradually from 32 weeks' gestation to term in normal pregnant women as assessed by indirect calorimetry.

Correspondence to Hiromitsu Chihara, Department of Obstetrics and Gynecology, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan
naru@nms.ac.jp

ArticleTitle	Resting Energy Expenditure in Pregnant Japanese Women
AuthorList	Hiromitsu Chihara, Yasuo Otsubo and Tsutomu Araki
Affiliation	Department of Obstetrics and Gynecology, Nippon Medical School
Language	EN
Volume	69
Issue	4
Year	2002
Page	373-375
Received	January 28, 2002
Accepted	March 29, 2002
Keywords	resting energy expenditure, indirect calorimetry, pregnancy
Abstract	The subjects were 160 pregnant women with no complications who were examined with indirect calorimetry by a single observer; 20 healthy age-matched non-pregnant women were used as controls. Assessment was performed 12 hours after oral intake of food. Each measurement of resting energy expenditure divided by the body surface area was analyzed and compared with that of the controls. In pregnant women, the mean resting energy expenditure divided by the body surface area did not significantly increase until 32 weeks' gestation. Energy expenditure increased significantly by about 300∼600 kJ/m² between before 31 weeks' gestation and the end of pregnancy. Significant changes occurred in the 32∼35 and 36∼40 weeks' gestational stages (3,790±370,4,110±385 kJ/m²) (p <0.05). Resting energy expenditure increases at conception, and does not increase until 32 weeks' gestation, but increases gradually from 32 weeks' gestation to term in normal pregnant women as assessed by indirect calorimetry.
Correspondence to	Hiromitsu Chihara, Department of Obstetrics and Gynecology, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan naru@nms.ac.jp