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在有意减肥后,身体组成的长期变化及其对身体功能的影响
Kacey Chae1, Xiaoyan Leng2, Rebecca H Neiberg2
1Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
在肥胖和2型糖尿病的成年人中,故意减肥会影响身体功能. 保持瘦身量和最大限度地减少脂肪增加对于长期的体力表现至关重要.
科学领域:
- 老年学是一门学科.
- 代谢疾病 代谢疾病
- 运动生理学 运动生理学
背景情况:
- 肥胖和2型糖尿病 (T2DM) 的老年人有意减肥引起了人们对瘦身量减少和随后的身体功能下降的担忧.
- 减肥干预后身体组成变化和身体功能之间的长期关联仍然不清楚.
研究的目的:
- 检查T2DM中年和老年人的强化生活方式干预 (ILI) 后8年身体组成和身体功能变化之间的长期关联.
- 在8年的时间内,评估故意减肥对身体组成和身体功能的影响.
主要方法:
- 从巴顿鲁日地区的Look AHEAD研究中对220名参与者的二次分析.
- 患有超重/肥胖和T2DM的参与者被随机分配到密集的生活方式干预 (ILI) 或糖尿病支持和教育 (DSE) 中.
- 使用双能X射线吸收计测量身体成分;在基线和8年随访时评估身体表现和力量.
主要成果:
- 在8年内,与DSE相比,ILI组的体重和肌肉量减少得更大,但保持了更好的体力表现 (SPPBexp) 和步行速度.
- 脂肪质量的增加与较差的体力表现和较慢的步行速度有关.
- 瘦肉量减少与握力和膝盖伸展器强度的减少有关.
结论:
- 虽然ILI证明了对身体功能的积极影响,但身体组成的变化至关重要.
- 增加的脂肪质量与减少的体力表现相关,瘦质量损失与力量的减少有关.
- 策略应侧重于在减肥干预期间保持瘦肉量和管理脂肪量,以获得长期的健康益处.
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