身体活動の相対的な強度と冠動脈疾患のリスク
I-Min Lee1, Howard D Sesso, Yuko Oguma
1Department of Epidemiology, Harvard School of Public Health, Boston, MA 02115, USA. i-min.lee@channing.harvard.edu
Circulation
|March 5, 2003
まとめ
身体活動の強度は,知覚された運動量によって測定され,冠動脈疾患 (CHD) のリスクの低下と関連しています. 絶対的なMETだけでなく,個々のフィットネスレベルは,CHDを予防するための効果的な運動推奨の鍵です.
科学分野:
- 心血管の健康についてです.
- 運動生理学 運動生理学
- 予防医学は,予防的な医療です.
背景:
- 現在の身体活動ガイドラインは,心血管の健康のために中程度の強度 (≥3METs) の運動を推奨しています.
- 絶対的強度測定法 (METs) は,個々の健康状態の変動を考慮しない場合があります.
- 相対的な運動強度と冠動脈疾患 (CHD) のリスクとの関係はよく理解されていません.
研究 の 目的:
- 相対的な身体活動強度と冠動脈疾患 (CHD) の発症リスクとの関連を調べる.
- 運動中に知覚される運動レベルが,絶対的な強度よりも,心臓病リスクのより良い予測指標であるかどうかを判断する.
- これらの関連が,現在の身体活動に関する推奨事項を満たしていない個人にさえ当てはまるかどうかを評価する.
主な方法:
- 1988年から1995年まで7337人の男性 (平均年齢66歳) を追跡調査した.
- 参加者は,ボルグスケール (相対的強度) を使用して,身体活動と知覚された運動量を報告しました.
- 冠動脈疾患 (CHD) の発生率が記録され,多変量分析が行われました.
主要な成果:
- 弱い運動と比較して,より高い知覚運動レベル (中等,若干強い,強い) で,心臓病のリスクが低いことが観察されました.
- 相対的強度とCHDリスクの間のこの逆関連は有意であった (P ((トレンド) =0.02).
- 相対的な強度の保護効果は,標準的な身体活動ガイドラインを満たしていない男性でも明らかでした (<1000 kcal/w または <3 METs).
結論:
- 身体活動の相対的な強度は,知覚された運動量に基づいて,心臓病のリスクと逆に関連しています.
- 個人の健康状態を考慮して,運動の強度の個別の評価は,METに基づく絶対的な勧告よりも効果的かもしれません.
- ≥3METを推奨する現在のガイドラインは,よりよいCHD予防のための個々の能力を組み込むために精細化する必要があるかもしれません.
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