男性エリート選手の右心室機能と左心室質量:制御されたコントラスト強化心血管磁気共振研究
Philipp Bohm1, Günther Schneider2, Lutz Linneweber2
1From Institute of Sports and Preventive Medicine, Saarland University, Saarbrücken, Germany (P.B., L.L., N.K., W.K., T.M., J.S.); Clinic of Diagnostic and Interventional Radiology, Saarland University Medical Center, Homburg, Germany (G.S.); and Clinic of Pediatric Cardiology, Saarland University Medical Center, Homburg, Germany (A.R., H.A.-K.). philipp.bohm@gmx.de.
Circulation
|April 14, 2016
まとめ
マスター・アスリートの激しい耐久運動は 慢性的な右心損傷を引き起こす可能性は低い. この研究は,運動による心拍動不全の右心室性心筋疾患の仮説に疑問を投げかけています.
科学分野:
- 心臓病科
- スポーツ医学
- 運動 生理学
背景:
- 激しい耐久運動が,特に右心臓に慢性的な心臓損傷を引き起こすかどうかについては議論があります.
- エリート級の耐久力選手は 一生懸命にトレーニングをしながら 心臓に悪影響を及ぼすのではないかと 懸念されています
研究 の 目的:
- 心臓の構造と機能を 長期にわたって 精鋭の耐久力アスリートで調べるため
- カントラスト強化心血管磁気共振 (CE-CMR) を用いて,右心室の状態を具体的に評価する.
主な方法:
- 33人のエリート男性耐久力アスリート (30~60歳,訓練期間29年±8年) と33人の年齢/身長/体重を合わせた対照群を比較した.
- 心肺運動検査,エコーカーディオグラフィー (組織ドップラー,スペックル追跡) とCE-CMRを用いた.
- インデックスされた心室質量と体積,エジェクション分子を測定し,病理的な後期増強を評価した.
主要な成果:
- 運動選手は,対照群と比較して,左心室と右心室のインデックス質量と体積が有意に増加した.
- 右心室射出分子は,アスリートと対照群の間で類似した (52±8% vs. 54±6%,P=0. 26).
- 病理的な後期増強は1人のアスリートでしか認められず,心臓のバイオマーカーは全員陰性でした.
結論:
- 慢性的な右心房損傷は,生涯にわたる高いトレーニング量を持つエリート耐久力マスターアスリートではありえないようです.
- これらの発見は,この集団における運動誘発性心拍動不全の仮説に異議を唱える.
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