作者:Belinda Koo、Jocelyn Walters、Elaine Hockman、Winston Koo
DOI:10.1080/07315724.2002.10719217
日期:2002.6
Objective: To measure body composition in newborn twins and to test the hypothesis that differences in body weights between twins are reflected proportionally by their differences in various components of body composition.Methods: 48 pairs of newborn twins delivered at a tertiary teaching hospital had dual energy x-ray absorptiometry(DXA) body composition measurement for bone mineral content (BMC), lean and fat mass (LM, FM). Data analyzed with regression and analysis of variance.Results: Body weight, BMC, LM and FM increased with increased gestational age (p < 0.001). The percent difference in BW between each twin pair was significantly correlated with percent difference in BMC, LM. and FM (p < 0.001). However, mean (+/- SD) percent difference in body weight (14.3 +/- 10.0%) was significantly lower (p < 0.001) than FM (26.0 +/- 15.0%) but was not significantly different from LM (13.4 +/- 9.0%) or BMC (15.9 +/- 11.6%).Conclusion: In newborn twins, body weight and body composition varies with gestational age. For any twin pair, a difference in body weight was correlated with but not proportional to differences in individual components of body composition.