饮食中的蛋白质摄入量及其与骨性质的关联使用外围定量计算机断层扫描和双能量X射线吸收仪在耐力训练的个体中
Silar Gardy1, Ada Sevinc2, Jennifer Levee1
1Department of Kinesiology and Physical Education, McGill University, Montréal QC, Canada.
Current developments in nutrition
|June 18, 2025
概括
耐力运动员饮食总蛋白质摄入量与骨和肌肉健康指标没有相关性. 然而,动物蛋白摄入量与改善骨强度和肌肉大小有关,而总蛋白摄入量与腰椎骨密度有关.
科学领域:
- 运动医学 运动医学
- 营养科学 营养科学
- 骨生理学 骨生理学
背景情况:
- 耐力运动员面临较高的风险,由于强烈的训练和营养需求,骨健康状况不佳.
- 饮食中的蛋白质对于保持运动员骨和肌肉完整性至关重要.
- 在耐力运动员中,蛋白质摄入量与高级骨/肌肉健康指标之间的联系存在有限的研究.
研究的目的:
- 研究耐力运动员的饮食蛋白质摄入量与骨/肌肉健康指标之间的关联.
- 分析与体积骨矿物质密度 (vBMD),骨强度指数 (SSI, BSI),区域骨质密度 (aBMD) 和肌肉特征 (密度,CSA,强度) 的关系.
主要方法:
- 一项涉及50名健康耐力训练成年人的横截面研究.
- 外围定量计算断层扫描 (pQCT) 评估了骨和小腿肌肉的参数.
- 双能X射线吸收计 (DXA) 测量了腰椎和近腰大腿骨的骨矿物质密度.
- 饮食中的蛋白质摄入量用3天24小时的饮食回忆来量化.
主要成果:
- 在总蛋白质摄入量和pQCT衍生骨/肌肉量度之间没有发现显著的相关性.
- 来自动物来源的蛋白质与骨强度指数 (SSI) 和小腿肌肉横截面积 (CSA) 有积极的关联.
- 较高的饮食总蛋白质摄入量显著与较大的腰椎区域BMD (aBMD) 有关.
结论:
- 饮食中总蛋白质摄入量与耐力运动员的pQCT测量骨和肌肉特征没有直接关系.
- 来自动物的蛋白质摄入量与提高骨强度和肌肉大小有关.
- 总蛋白质摄入量解释了腰椎骨密度差异的一小部分.
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