Human pregnancy is associated with important physiological changes that usually increase energetic requirements. However, great variability exists in the costs and mechanisms required to bear pregnancy. Since body mass (BM) and composition are modified during gestation, it is of great interest to compare the influence of BM on energy expenditure (EE) in pregnant and nonpregnant females.

中文翻译：

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身体成分有助于：怀孕和未怀孕女性之间的能量消耗差异

人类怀孕与重要的生理变化有关，这些变化通常会增加能量需求。然而，怀孕所需的成本和机制存在很大差异。由于体重 (BM) 和成分在妊娠期间会发生变化，因此比较 BM 对怀孕和未怀孕女性的能量消耗 (EE) 的影响非常有趣。