生涯運動訓練用量の心房動脈結合への影響
Michinari Hieda1, Erin Howden1,2, Shigeki Shibata1,3
1Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas, and University of Texas Southwestern Medical Center (M.H., E.H., S.S., N.F., PS.B., J.L.H., T.T., S.S., Q.F., R.Z., B.D.L.).
Circulation
|December 21, 2018
まとめ
終身運動は高齢者の心臓機能を保ちます 効率的な心房動脈結合と 老化とともに動的スターリング機構を維持するために 週に4〜5回の運動セッションを行うことが最適である.
科学分野:
- 心臓病科
- 運動 生理学
- ゲロントロジー
背景:
- 動的スターリングメカニズムは 心室と動脈の結合に不可欠で 年齢とともに衰退します
- 高度な訓練を受けたマスター・アスリートはこのメカニズムを維持しますが,必要な生涯の運動量は不明です.
- この関係を理解することは 高齢者の心血管機能の保全の鍵です
研究 の 目的:
- 健康な高齢者における生涯にわたる運動とダイナミックなスターリングメカニズムとの間にある用量依存関係を調査する.
- 老化とともに心房と動脈の結合を維持するために必要な最適な運動量を決定する.
主な方法:
- 102人の高齢者は,週間の運動頻度 (過去25年) に基づいて,座っている,気軽な,コミットされた,競争力のあるマスター・アスリートグループに分類されました.
- 動的スターリングメカニズムは,肺動脈圧のビートバイビートの変化と脳卒中の体積指数間の移転機能の獲得を使用して評価されました.
- ピーク酸素吸収 (Vo2) と左心室の硬さも測定された.
主要な成果:
- 移転機能の獲得は,座っている人と比較して,コミット (4〜5セッション/週) と競争力のある (6〜7セッション/週) 運動者において有意に増加しました.
- 酸素吸収のピークが高く 左下室の硬直度が上昇した.
- 座っている成人は肺動脈の圧力の変動が大きかったが,競争力のある運動者は脳卒中の体積指数の変動が大きかった.
結論:
- 健康な高齢者において,心室動脈結合の漸進的な,用量依存の改善が観察される.
- 生涯にわたる運動,特に週に4〜5回の運動は,心房と動脈の結合と老化とともに起こる ダイナミックなスターリングメカニズムの維持に最適であるようです.
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