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不同强度或持续时间的运动对唾液IgA分泌的影响
Takamasa Uchino1, Masataka Uchida2,3, Reita Ito1
1Faculty of Sport and Health Science, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan.
European journal of applied physiology
|April 18, 2024
概括
强烈的运动 (≥75%的最大氧气吸收30分钟) 或长时间的运动 (≥90分钟的最大氧气吸收55%) 会减少未经训练的男性的唾液免疫球蛋白A (s-IgA) 分泌. 这种免疫反应与运动强度和持续时间有关.
科学领域:
- 运动生理学 运动生理学
- 免疫学 免疫学 免疫学
- 运动科学 运动科学 运动科学
背景情况:
- 唾液免疫球蛋白A (s-IgA) 对于粘膜免疫非常重要.
- 急性运动可以调节s-IgA分泌,影响免疫防御.
- 了解运动强度和持续时间对s-IgA的影响对于运动员的健康和训练至关重要.
研究的目的:
- 研究不同强度和持续时间的运动对唾液免疫球蛋白A (s-IgA) 分泌率的影响.
- 确定运动强度和持续时间的值,从而显著改变未经训练的年轻男性的s-IgA水平.
主要方法:
- 随机交叉试验涉及12名健康未经训练的年轻男性.
- 实验1:在35%,55%和75%的最大氧气吸收 (VO2max) 时循环30分钟.
- 实验2: 55%的VO2max循环30分钟,60分钟和90分钟;运动前后收集的唾液样本.
主要成果:
- 较高的运动强度 (75% VO2max) 与中等强度 (55% VO2max) 相比,显著降低了s-IgA分泌.
- 与较短时间 (30分钟) 相比,长时间的运动 (90分钟) 显著降低了s-IgA分泌量.
- 增加的唾液皮质醇水平与较高强度的s-IgA分泌量减少相关.
结论:
- 运动强度≥75% VO2max 30分钟或持续时间≥90分钟,在55%的VO2max下抑制未经训练的年轻男性的s-IgA分泌.
- 这些发现突出了可能损害粘膜免疫力的特定运动参数.
- 对训练负载管理的影响,以维持运动员的免疫功能.
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