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老化,習慣的な運動,動的動脈コンプライアンス
H Tanaka1, F A Dinenno, K D Monahan
1Human Cardiovascular Research Laboratory, Department of Kinesiology and Applied Physiology, University of Colorado at Boulder, 80309-0354, USA. tanakah@colorado.edu
Circulation
|September 12, 2000
まとめ
定期的な有酸素運動は,年齢とともに大動脈の柔軟性を維持するのに役立ちます. 耐久力トレーニングは,中枢動脈の適合性を改善し,中年および高齢の男性における心血管疾患のリスクを軽減します.
科学分野:
- 心血管生理学 心血管の生理学
- 運動科学は運動科学である.
- ゲロントロジーはゲロントロジーの学科です.
背景:
- 中枢動脈の適合性の低下は,年齢に関連する心血管疾患の危険因子です.
- 大動脈の硬化は老化の特徴です.
- 動脈の健康を維持することは,心血管疾患の予防に不可欠です.
研究 の 目的:
- 中枢動脈コンプライアンスにおける年齢関連の低下に対する習慣的な運動の影響を調査する.
- 異なる年齢の男性における異なる活動レベルでの動脈適合を比較する.
- 構造化された有酸素運動の介入が動脈適合に与える影響を評価する.
主な方法:
- 151人の健康な男性 (18~77歳) を対象とした横断的研究で,活動レベル (静止,レクリエーション,耐久力トレーニング) により分類した.
- 3ヶ月の有酸素運動プログラムを受けた20人の中年/高齢の静止型男性を対象とした介入研究.
- Bモード超音波とアプラネーショントノメトリーを使用して測定された中央動脈適合度.
主要な成果:
- 中枢動脈の適合性は,すべてのグループで年齢とともに低下した.
- 耐久力トレーニングをした男性は,静止体/レクリエーション活動をする男性よりも,動脈適合性が20~35%高いことを示した.
- エアロビックエクササイズによる介入は,これまで静止していた男性における動脈コンプライアンスを有意に増加させた.
結論:
- 定期的な有酸素耐久運動は,中枢動脈コンプライアンスにおける年齢に関連する減少を弱める.
- 運動は,静止型の中年および高齢の男性における動脈の適合性を回復させることができます.
- 動脈適合性の改善は,習慣的な運動で心血管疾患のリスクを減らす重要なメカニズムである可能性があります.
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