低ナトリウム血症とウルトラマラソン走行
JAMA
|February 14, 1986
まとめ
2人のウルトラマラソン・ランナーが,過剰な水分摂取により,低血圧性脳症を発症し,入院を余儀なくされた. この状態は,しばしば水中毒と呼ばれていますが,超耐久レースのリスクを強調しています.
科学分野:
- スポーツ医学 スポーツ医学
- 運動生理学 運動生理学
- 臨床神経学 臨床神経学
背景:
- 血液中のナトリウム濃度が低い状態である低ナトリウム血症は,通常,耐久力運動と関連していません.
- ウルトラマラソンなどの超耐久レースは,長時間的な身体的労力と大量の水分消費を伴う.
研究 の 目的:
- ウルトラマラソン走行者における低血圧性脳症の症例を報告し,分析する.
- 超耐久性アスリートにおける運動誘発性低ナトリウム血症の要因と潜在的なメカニズムを調査する.
主な方法:
- レース後に入院した2人のウルトラマラソン選手の症例報告.
- 液体摂取量,汗によるナトリウム損失,および臨床表現の分析.
- 運動後の低ナトリウム血症の潜在的な生理学的説明のレビュー.
主要な成果:
- 2人のランナーは,超マラソン中に過剰な無料の水を消費した後に,低血圧性脳症を発症しました.
- 低ナトリウム血症は,高量の水分摂取,水分保持,および汗によるかなりのナトリウム損失に起因した.
- 症状は,運動後の胃腸液の吸収が速く,血のナトリウムが希釈されたことから生じた可能性がある.
結論:
- 超耐久性アスリートでは,過度の水分摂取により,ハイポナトリミック脳性病気が発生することがあります.
- 水中毒につながる過度の水消費は,重大なリスク因子です.
- 低ナトリウム血症は,超耐久イベントの潜在的な合併症と考えられるべきです.
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