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左心室質量が増加したアスリートにおける正常な超音波心筋反射率. 組織特性に関する研究である
F Lattanzi1, V Di Bello, E Picano
1C.N.R. Institute of Clinical Physiology, University of Pisa, Italy.
Circulation
|May 1, 1992
まとめ
生理学的多動性を持つアスリートは,多動性心筋症の患者とは異なり,正常な超音波逆分散を示します. 定量的な超音波分析は,運動選手と,左心室の壁の厚さが類似している場合でも,高縮性心筋症の患者との違いを明らかにします.
科学分野:
- 心臓病学 心臓病学
- バイオメディカル超音波検査
- スポーツ医学 スポーツ医学
背景:
- 筋の超音波統合バックスケーターは,コラーゲン含有量と相関し,繊維の乱れによる多動性心筋病の増加に起因する.
- 激しいトレーニングによる生理学的縮は,心筋組織の反射性とその左心室壁の厚さとの関係を研究する機会を提供します.
研究 の 目的:
- 生理学的高縮性のあるアスリートにおける心筋組織の反射性を調査する.
- アスリートにおける音響特性と左心室壁の厚さの関係を評価する.
- 定量超音波分析を用いて,運動選手と心筋縮性心筋症候群の患者を区別する.
主な方法:
- 24人の若い男性アスリート (サイクリスト,ウェイトリフター) と10人の座っている対照群を研究した.
- 標準的な測定のために2Dエコーカーディオグラフを使用しました.
- 線上無線周波数分析のプロトタイプを用いて,心筋壁の統合逆分散 (%IB) を定量化しました.
- 比較されたアスリートは,類似の隔膜の厚さを持つ高縮性心筋病患者である.
主要な成果:
- アスリートは,対照群と比較してセプトと後部壁の厚さが増加した (p <0.01).
- アスリートと対照群の間では,セプトまたは後壁に対する%IBの有意な差は観察されなかった.
- アスリートにおける壁の厚さと心筋の反射性との間には相関が認められなかった.
- ハイパートロフィック心筋症候群の患者は,アスリートよりも著しく高い%IBを示しました (p <0.01).
結論:
- 生理学的左心室高縮症のスポーツ選手は,通常の定量超音波逆分散を示しています.
- 背面散乱超音波信号の定量分析により,運動選手と筋縮性心筋症の患者を,心筋膜壁の厚さが類似している状態で区別することができる.
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Gallops:
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Gallops:

