窒素に富んだビートの摂取が心血管機能と内皮機能に与える投与量効果:ランダム化制御試験

Abbie G McLellan^1,2, Jarred P Acton^1,3, Emma O'Donnell¹

¹School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, LE11 3TU, UK. s.bailey2@lboro.ac.uk.

Food & function

|February 18, 2026

まとめ

ダイエット用窒素サプリメントは,健康な成人の動脈の硬さと内皮機能を改善しました. 異なる用量は大動脈の血圧と内皮機能に影響を及ぼしたが,腕の血圧には影響はなかった.

科学分野:

心血管生理学心血管の生理学
栄養科学とは,栄養科学である.
スポーツ医学スポーツ医学

背景:

ダイエット中の窒素 (NO3-) サプリメントは,心臓血管の利点と関連しています.
腕血圧以外の様々な心血管マーカーに対する用量反応の影響は十分に理解されていません.

研究の目的:

急性ダイエット用窒素補給による腕と大動脈の血圧,動脈の硬化,内皮機能に対する用量反応効果を調査する.
NO3-補給が血の窒素酸塩および窒素酸塩濃度に与える影響を評価する.

主な方法:

ダブルブラインド,ランダム化,クロスオーバーデザイン.
NO3が豊富なベートルーツ粉 (200 mg, 400 mg, 800 mg) の3つの急性投与が実施されました.
心血管の変数と血液サンプルを補給前と補給後 (2.5時間) に測定しました.

主要な成果:

血の窒素酸塩と窒素酸塩は増加したが,循環グアノシンモノフォスファート (cGMP) の濃度は変化しなかった.
動脈の硬さは,すべてのニートレート投与量において,大きな違いなしに改善されました.
400mgのNO3-で内皮機能が改善され,800mgのNO3-.で大動脈シストリック血圧が改善されました.

結論:

急性ダイエット用窒素サプリメントは,動脈の硬さ,内皮機能,大動脈シストリック血圧に,用量依存の方法で,積極的な影響を及ぼします.
腕血圧と血のcGMPレベルは,窒素補給による影響を受けませんでした.
この発見は,健康な成人における窒素酸塩の心血管への影響に関する理解を深める.

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