適度期および遅期の早産児の2歳時の体組成
Anne H Lafeber1,2, Mark Bosch1, Dewi van Harskamp3,4,5
1Department of Pediatrics and Neonatology, North West Clinics, Alkmaar, the Netherlands.
Journal of pediatric gastroenterology and nutrition
|February 21, 2026
まとめ
適度および遅い時期の早産児は,2歳までに身体の組成が変化し,肥満質が高く,無脂肪質が低くなると,期限までに生まれた乳児と比較します. 早期の体重増加は脂肪量に影響を及ぼし,栄養と成長に関するさらなる研究が必要であることを示唆しています. キーワード:早産児,体質,脂肪量,無脂肪量.
科学分野:
- 小児科は小児科です.
- ネオナトロジーの新生児科
- 人間の生理学 人間生理学
背景:
- 適度および遅い早産の乳児 (MLPTI) は,期限までに生まれた乳児と比較して,身体の構成が異なっています.
- 幼児期を超えたMLPTIの体組成に関するデータは限られている.
研究 の 目的:
- MLPTIで2歳時修正年齢 (CA) の体組成を評価するために.
- MLPTIの体組成を,期限内に生まれた乳児のデータと比較するために.
- MLPTIにおける早期の成長と身体の組成との関連を特定する.
主な方法:
- 妊娠32 0/7から35 6/7週間の間に生まれたMLPTIを含む.
- デュテリウムラベル付きの水を使用した2年CAの身体構成分析.
- 早期の成長と身体の組成との関連を分析するための多変数回帰.
主要な成果:
- 2年CAのMLPTIでは,体脂肪重量 (25.3%) の平均比率が高く,脂肪フリー比率 (74.7%) の平均比率が低い.
- 脂肪質量指数 (FMI) の平均値は3.9kg/m2で,無脂肪質量指数 (FFMI) は11.4kg/m2でした.
- 2年CA (p=0.025) で体重zスコアが1SD増加すると,肥満量が2.2%増加したが,FMIは認められなかった.
結論:
- MLPTIでは,2年後のCAで,満期出産の乳児と比較して,より高い脂肪質量パーセントと低脂肪質量指数を示しています.
- 発見は,過剰な脂肪の蓄積ではなく,脂肪フリーマスの減少によって特徴づけられる体の組成の変化を示唆しています.
- MLPTIにおける体構成,栄養,体重管理に関するさらなる研究が必要である.
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