エアロビックエクササイズトレーニングは,健康な高齢の男性において,年齢に関連した周辺循環器の変化を逆転させることができます
P A Beere1, S D Russell, M C Morey
1Department of Medicine, Divisions of Cardiology and Geriatrics, Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, NC 27710, USA.
Circulation
|September 8, 1999
まとめ
定期的な有酸素運動は,筋肉への血流を増やすことで,高齢者の最大酸素消費を向上させます. この研究は,トレーニングが年齢に関連する衰えを逆転させ,酸素の供給と筋肉の運動における利用率を向上させることを示しています.
科学分野:
- 運動生理学とは
- 老化に関する研究.
- 運動に対する心血管の反応
背景:
- 最大酸素消費量は年齢とともに減少しますが,運動トレーニングが高齢者の中枢的および周辺的反応に与える影響は不明です.
- これらの反応を理解することは,健康的な老化のための効果的な運動介入の開発に不可欠です.
研究 の 目的:
- 高酸素消費のピークの年齢関連の低下に対する中央および外周心血管の貢献を調査する.
- 運動トレーニングがこれらの反応に及ぼす影響を,年配の男性と若い男性を比較する.
主な方法:
- 段階的サイクルエルゴメトリーにおける中央および周辺の心血管応答の侵入的測定.
- 10人の高齢者男性と13人の若者男性による3ヶ月の運動訓練プログラムの前と後の反応の比較.
主要な成果:
- 両グループとも,トレーニングでピーク酸素消費量を増加させ,ピーク心電量量は変わらなかった.
- 系統性動脈静脈酸素差はトレーニングとともに増加し,ピーク酸素消費量の改善を説明しました.
- 足のピーク血流は年配の男性では著しく増加し,足の酸素抽出は若い男性では改善された.
結論:
- 最大酸素消費量の年齢関連の低下は,筋肉への心臓出力の分配に影響を与える脱水と関連しています.
- 運動トレーニングは,これらの効果を逆転させ,高齢者の心血管機能と酸素利用を改善することができます.
- 心臓の出力準備量の低下は,年齢に関連した運動能力の低下に寄与する.
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