大量の雪を掘り出すために必要な心臓の要求
B A Franklin1, P Hogan, K Bonzheim
1Department of Medicine, William Beaumont Hospital, Royal Oak, MI 48009.
JAMA
|March 15, 1995
まとめ
大量の雪をぎ出すことは,最大限の運動テストに匹敵する,未訓練の男性に重大な心血管と有酸素の要求を課します. 自動除雪機は,これらの生理学的反応を大幅に軽減します.
科学分野:
- 運動生理学 運動生理学
- 心血管の健康についてです.
- 環境医学 環境医学
背景:
- 特に寒い気候の地域では,雪をひそめることは一般的な活動です.
- 手作業による雪除きは身体的に厳しい作業であり,有害な心血管疾患と関連している.
研究 の 目的:
- 手動で雪をけいれんする時の生理学的反応と,電気の雪をけいれんする時の生理学的反応を比較する.
- 健康で訓練されていない男性における異なる除雪方法の心血管および有酸素の要求を評価する.
主な方法:
- 10人の健康な未訓練の男性を対象とした観察・コントロール試験です.
- 被験者は手動で雪をけいれんし,冷たい環境 (2°C) で電気スノーホラーを使用した.
- 心拍数,血圧,酸素吸収などの生理学的測定値が記録され,最大運動テストと比較されました.
主要な成果:
- 手動で雪をけいれんすることは,高心拍数 (最大最大97%まで) と高血圧 (198 ± 17 mm Hg) を引き起こす.
- 心臓呼吸器および知覚された運動反応は,自動雪除きで著しく減少しました.
- の生理学的要求は,最大アーム・エルゴメーターとトレッドミルのテストに匹敵していました.
結論:
- 重い手作業のスノーシェーピングは,最大限の運動に似た,かなりの心筋と有酸素のストレスを課します.
- これらの発見は,手動の除雪に伴う潜在的心血管リスク,特に静止生活の人を強調しています.
- 自動除雪機は,より軽い労力を要する代替手段を提供しており,運動に関連した心血管疾患のリスクを潜在的に軽減します.
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