慢性的な低水分摂取は,運動による酸化ストレスと免疫細胞応答の変化と関連している:横断的な研究
Minju Sim1, Wook Song2,3, Eun Young Choi4,5
1Seoul National University, Department of Food and Nutrition, Seoul, Republic of Korea.
Journal of the International Society of Sports Nutrition
|September 3, 2025
まとめ
慢性的な水分不足は 運動による酸化ストレスと 細胞損傷を増加させます 十分な水分補給を維持することは,運動ストレス管理と不良免疫反応の予防に不可欠です.
科学分野:
- 運動 生理学
- 免疫学
- 栄養学
背景:
- 水分状態は,運動による酸化ストレスと身体能力に大きな影響を及ぼします.
- 急性水分補給効果は知られているが,運動中の酸化ストレスと免疫細胞の変化に対する慢性的な低水分摂取の長期的な影響は十分に理解されていない.
研究 の 目的:
- 習慣的な水分摂取量と運動による酸化ストレスとの関係を調査する.
- 慢性的な水分消費パターンに基づく運動への反応として,周縁の免疫細胞の組成の変化を調べる.
主な方法:
- 参加者の通常の水摂取量 (n=26,年齢19~29歳) を評価し,水分を多く飲む人または少量飲む人として分類した.
- 血清の反応性酸素代謝物 (ROM) と生物学的抗酸化能力 (BAP) を測定する最大分位運動試験を実施した.
- CD4+,CD8+,CD20+,CD14+,CD11b+,およびアネキシンV+を含む外周血液単核細胞 (PBMC) を,光活性化細胞分類を用いて分析した.
主要な成果:
- 水分を少なく飲む人は,水分を多く飲む人と比較して,血清のROM値が高かった.
- 水分を多く飲む人は,運動後の血清BAPが増加した.水分を少なく飲む人はそうではなかった.
- 運動後,少量の水分を飲む人は,PBMCアポトーシスと免疫細胞の分化 (CD11b+の増加,CD14+減少) を経験しました.
結論:
- 通常の水分摂取量が少ないとすると 休息状態のフリーラジカルの副産物が増加し 運動中の抗酸化能力が低下します
- 低量の水分を摂取する人の体内のリドックスバランスが損なわれると 運動ストレスで細胞の損傷が加速し 免疫細胞の反応が変化します
- 運動による酸化ストレスを軽減し,過剰な細胞反応を防ぐには,十分な水分摂取が不可欠です.
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