饮食中的蛋白质含量对体重增加,能量消耗和过度进食期间的身体组成的影响:一项随机对照试验
George A Bray1, Steven R Smith, Lilian de Jonge
1Pennington Biomedical Research Center, 6400 Perkins Rd, Baton Rouge, LA 70808, USA. George.bray@pbrc.edu
JAMA
|January 5, 2012
概括
与正常或高蛋白饮食相比,低蛋白饮食的过度饮食导致体重增加较少. 蛋白质摄入量会影响能量消耗和瘦体质量,但不会影响脂肪储存.
科学领域:
- 代谢研究的研究.
- 营养科学 营养科学
- 人类生理学 人类生理学
背景情况:
- 饮食成分对人类过度饮食和能源消耗的影响仍然不完全理解.
- 调查卡路里余期间变化蛋白质摄入量的作用对于代谢健康见解至关重要.
研究的目的:
- 为了确定低,正常和高蛋白饮食在过度消费期间如何影响体重增加,能量消耗和身体组成.
- 阐明饮食中的蛋白质在能量平衡和体重调节中的特定作用.
主要方法:
- 一项随机对照试验,涉及25名健康成年人 (18-35岁) 在10-12周内.
- 参与者每天摄入大约954千卡路里,饮食中含有5% (低),15% (正常) 或25% (高) 的蛋白质.
- 测量包括身体成分 (DXA),休息能量消耗 (通风罩) 和总能量消耗 (双重标记的水).
主要成果:
- 低蛋白饮食导致体重增加显著减少 (3.16公斤) 与正常 (6.05公斤) 和高蛋白饮食 (6.51公斤) 相比.
- 身体脂肪在所有组中都增加了,占多余卡路里的50-90%.
- 休息时的能量消耗和瘦身量在正常和高蛋白饮食中增加,但在低蛋白饮食中没有增加.
结论:
- 卡路里余是脂肪增加的主要驱动因素,无论蛋白质摄入量如何.
- 饮食中的蛋白质在过度养期间显著影响能量消耗和瘦肉体质量的增加.
- 蛋白质含量调节了对过度进食的代谢适应,影响了瘦肉质量,但没有影响脂肪积累.
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