窒素バランスとインジケーターアミノ酸酸化方法に基づくタンパク質需要の比較:総括的なレビューとメタ分析
Ryoichi Tagawa1, Daiki Watanabe2, Yumiko Inoue3
1Graduate School of Sport Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa-city, Saitama 359-1192, Japan; Wellness Science Labs, Meiji Holdings Co Ltd, 1-29-1 Nanakuni, Hachioji-city, Tokyo 192-0919, Japan.
The Journal of nutrition
|September 6, 2025
まとめ
インジケータアミノ酸酸化 (IAAO) 方法は,タンパク質の必要性が標準の窒素バランス (NB) 方法より約30%高いことを示唆しています. この発見は 人間のタンパク質の必要性を 理解する上で 重要な洞察力を与えてくれます
科学分野:
- 栄養学
- 生物化学
- 人間の生理学
背景:
- 精密なタンパク質需要の評価は 欠乏による健康リスクの予防に不可欠です
- 窒素バランス (NB) 方法は標準ですが,指標アミノ酸酸化 (IAAO) 方法はますます研究されています.
- タンパク質の必要性に関するNBとIAAOの量的な比較は欠けている.
研究 の 目的:
- メタアナリシスを用いて,NBとIAAOの方法によって推定されたタンパク質の必要量を量的に比較する.
- 2つの評価方法のタンパク質需要値の有意な違いを特定する.
主な方法:
- NB (2012年までの) とIAAO (2023年までの) の研究に関する体系的な文献検索を,2025年1月までの継続的な検索で補完する.
- リファレンスリスト,PubMed,Ichushi-Web,引用トラッキング,灰色の文献で特定されたオリジナルの記事を含む.
- PRISMAのガイドラインに従ったウェルチのtテストを用いた方法のタンパク質需要の統計的比較
主要な成果:
- 43のNB記事 (777人の参加者) と17のIAAO記事 (186人の参加者) が含まれています.
- 非アスリートではIAAO (0. 88g/ kg/ 日) とNB (0. 64g/ kg/ 日) のタンパク質需要が著しく高く,36%増加した.
- アスリートはまた,IAAO (1.61g/kg/day) とNB (1.27g/kg/day) の27%の増加を示した.
結論:
- IAAOの方法は,NBの方法よりも約30%高いタンパク質の要求を一貫して推定しています.
- これらの定量的な差異は,非スポーツ選手の年齢と性別のサブグループに当てはまります.
- 研究結果は,最適なヒトのタンパク質摂取量に関する科学的議論に不可欠なデータを提供します.
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