米成人における食魚とオメガ3脂肪酸の摂取と心拍数の変動
Dariush Mozaffarian1, Phyllis K Stein, Ronald J Prineas
1Division of Cardiovascular Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Mass, USA. dmozaffa@hsph.harvard.edu
Circulation
|February 21, 2008
まとめ
魚とオメガ3の摂取は,高齢者の心拍数変動 (HRV) の改善と関連しています. これは,静脈管の活性とバルオ受容体の反応が改善され,心臓死のリスクが潜在的に低下することを示唆しています.
科学分野:
- 心臓病学 心臓病学
- 栄養科学とは,栄養科学である.
- 生理学 生理学とは
背景:
- 魚とオメガ3脂肪酸の消費は心臓死リスクを減らすことが知られているが,その背後にあるメカニズムは不明である.
- 心拍数変動 (HRV) は心臓死の予測であり,電気生理学的経路を反映しています.
- この研究では,魚/オメガ3の摂取量とHRVの関連性を調査しました.
研究 の 目的:
- 習慣的な魚と海洋オメガ3脂肪酸の消費と心拍数変動 (HRV) の関係を調べる.
- 食事と心臓のリスクを結びつける潜在的な電気生理学的メカニズムを解明する.
- 臨床リスク因子に対する魚の消費の観察された影響を裏付けるため.
主な方法:
- アメリカ合衆国の高齢者集団の横断分析 (n=4263 for ECG, n=1152 for Holter).
- 前年における通常の食用魚とオメガ3の消費量の評価.
- 潜在的な混同因子に対する多変数調整.
主要な成果:
- トンナ/魚の摂取はHRVの上昇と関連しており,静脈管の優位性と気球受容体の適度な反応を示しています.
- 特定のHRVインデックスは改善され,より高い平方根平均の連続差と正常化された高周波電力,低周波/高周波の比率が低下しました.
- また,魚の摂取量は,ポアンカレ比が低く,短期フラクタルスケーリング指数が高く,不規則なシノアトリアルノード発火が少ないことにも相関していました.
結論:
- 魚と海洋オメガ3の習慣的な摂取は,高齢者の好ましいHRVパターンと関連しています.
- これらのパターンは,静脈管の活性,気管受容体の機能,そして鼻腔節の調節が改善されたことを示唆しています.
- 細胞メカニズムと心臓リスクの軽減に対する臨床的影響を探るため,さらなる研究が必要です.
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