1年間の強烈な耐久力トレーニングに反応した心臓の改造です
Armin Arbab-Zadeh1, Merja Perhonen1, Erin Howden1
1From the Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital, Dallas (A.A.-Z., M.P., E.H., R.Z.); University of Texas Southwestern Medical Center, Dallas (R.M.P., R.Z., B.A.-H., B.D.L.); and Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Alberta, Canada (M.H.).
Circulation
|October 5, 2014
まとめ
座っている人での強烈な耐久力トレーニングは,エリートアスリートに似た心臓の適応につながる可能性があります. しかし,1年間のトレーニングだけでは,エリートな耐久力アスリートの心的適合性とパフォーマンスを合わせることはできません.
科学分野:
- 心臓病学 心臓病学
- スポーツ医学 スポーツ医学
- 運動生理学 運動生理学
背景:
- アスリートにおける運動誘発性心臓改造と遺伝的特徴の区別は難しい.
- この研究では,強度な耐久力トレーニングが,以前は静止状態だった個人に,エリートアスリートに似た心臓の変化を誘発できるかどうかを調査した.
研究 の 目的:
- 長期にわたる,集中的な耐久力トレーニングが,静止状態の個人におけるエリート耐久力アスリートに匹敵する心臓の改造を誘発できるかどうかを判断する.
- 耐久トレーニングが心臓の形態学,体積,機能に与える影響を調査する.
主な方法:
- 座りやすい生活を送っていた12人の成人は,12か月の間,漸進的で集中的な耐久力トレーニングを受けた.
- 心臓磁気共鳴画像は,複数の時間点での心室質量と体積を評価した.
- 酸素の最大摂取量,心臓の出力,肺動脈の圧力が測定されました.
- 心圧-体積とスターリング曲線が構築されました.
主要な成果:
- 最大酸素の吸収と心臓の出力は,1年間のトレーニング後に著しく増加しました.
- 左心室と右心室の質量が増加し,エリートアスリートに見られるレベルに達しました.
- 左心室の体積の変化は遅れたが,右心室の体積は徐々に増加した.
- 心臓のコンプライアンスとパフォーマンスは,エリートアスリートのレベルに近づいたが,それに匹敵しなかった.
結論:
- 1年間の強烈な耐久力トレーニングは,静止体型の個人に,エリートアスリートに似た心臓の形態学的適応を誘導する.
- このトレーニングの期間は,エリートレベルの心臓の順守とパフォーマンスを達成するのに不十分です.
- 左心室は,最初の同心的改造に続いて膨張を示し,右心室は,偏心的な改造を経験します.
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