体重指数：肥胖孕妇体脂的真实指标。
Body mass index: a true indicator of body fat in obese gravidas.
作者信息
Sewell Mark F, Huston-Presley Larraine, Amini Saeid B, Catalano Patrick M
机构信息
Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, MetroHealth Medical Center, Case Western Reserve University, Cleveland, Ohio 44109-1989, USA.
出版信息
J Reprod Med. 2007 Oct;52(10):907-11.
OBJECTIVE
To determine the relationship between body mass index (BMI) and percent body fat in overweight/obese pregnant women (BMI >25) before and during pregnancy.
STUDY DESIGN
Thirteen overweight women were evaluated longitudinally (prospective cohort study design) before conception, in early gestation (12-22 weeks) and in late gestation (31-36 weeks). BMI was calculated as weight (kg)/height (m)2, and percent body fat was estimated using hydrodensitometry with correction for residual lung volume.
RESULTS
The correlation between BMI and percent body fat before conception was r2 = 0.86 (p = 0.001). Furthermore, the correlation remained strong in early pregnancy, r2 = 0.84 (p = 0.001), but was less strong yet significant, r2 = 0.54 (p = 0.004), in late gestation.
CONCLUSION
In overweight women, the correlation between BMI and percent body fat remained significant during pregnancy. However, the correlation weakened as the pregnancy advanced.
目的
确定超重/肥胖孕妇（体重指数>25）孕前及孕期体重指数（BMI）与体脂百分比之间的关系。
研究设计
对13名超重女性在受孕前、妊娠早期（12 - 22周）和妊娠晚期（31 - 36周）进行纵向评估（前瞻性队列研究设计）。BMI计算为体重（千克）/身高（米）²，体脂百分比采用经残肺容积校正的水密度测量法估算。
结果
受孕前BMI与体脂百分比之间的相关性r² = 0.86（p = 0.001）。此外，在妊娠早期相关性仍然很强，r² = 0.84（p = 0.001），但在妊娠晚期相关性减弱但仍显著，r² = 0.54（p = 0.004）。
结论
超重女性在孕期BMI与体脂百分比之间的相关性仍然显著。然而，随着孕期进展，相关性减弱。
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