Insufficient amounts and inadequate distribution of dietary protein intake in apparently healthy older adults in a developing country: implications for dietary strategies to prevent sarcopenia.
Insufficient amounts and inadequate distribution of dietary protein intake in apparently healthy older adults in a developing country: implications for dietary strategies to prevent sarcopenia.
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DOI：
10.2147/cia.s49810
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发表时间：
2013
影响因子：
3.6
通讯作者：
Alemán-Mateo H
中科院分区：
文献类型：
--
作者：
Valenzuela RE;Ponce JA;Morales-Figueroa GG;Muro KA;Carreón VR;Alemán-Mateo H
据报道，在老年高加索人中，膳食蛋白质摄入量低和三餐时间蛋白质分布不足，但每餐蛋白质摄入量与肌肉质量之间的关系尚未研究。本研究的目的是评估膳食蛋白质的摄入量和分布的进餐时间，并探讨其与apapapulular骨骼肌质量在明显健康的老年人。这是一项横断面初步研究，包括78名60岁以上的人。卡路里和蛋白质的摄入量估计的基础上，三个非连续的24小时饮食回忆和apapproximular骨骼肌质量的双能X线吸收仪。男性每日蛋白质摄入量比女性多13.4g（P < 0.05）。膳食蛋白质摄入量的估计值为0.9 g/kg/天。在这个样本中，28%的受试者没有覆盖100%的蛋白质膳食参考摄入量。早餐和晚餐膳食蛋白质摄入量低于推荐量25-30 g（P < 0.05）。此外，该研究还观察到，<25 g of protein at each mealtime was different from that found in the group that consumed >在一次、两次或三次进餐时摄入25克蛋白质的男性和女性的骨骼肌质量明显增加。虽然蛋白质摄入量高于目前的建议，但未能达到报告的预防肌肉减少症所需的值。此外，每餐蛋白质摄入不足，尤其是早餐和晚餐。
Both low dietary protein intake and inadequate distribution of protein over the three mealtimes have been reported in older Caucasian adults, but the association between protein intake at each meal and muscle mass has not been studied. The purpose of this study was to evaluate dietary protein intake and distribution by mealtimes, and to explore their association with appendicular skeletal muscle mass in apparently healthy older adults. This was a cross-sectional pilot study that included 78 people over the age of 60 years. Caloric and protein intake were estimated on the basis of three nonconsecutive 24-hour diet recalls and appendicular skeletal muscle mass by dual-energy X-ray absorptiometry. Men consumed 13.4 g of protein/day more than women (P < 0.05). The estimated value of dietary protein intake was 0.9 g/kg/day. In this sample, 28% of subjects did not cover 100% of the dietary reference intake for protein. Lower consumption of dietary protein was found at breakfast and dinnertime compared with the recommended amount of 25–30 g (P < 0.05). Also, the study observed that appendicular skeletal muscle mass in men and women who consumed <25 g of protein at each mealtime was different from that found in the group that consumed >25 g of protein at one, two, or three mealtimes. While protein intake was higher than current recommendations, it failed to achieve the values reported as necessary to prevent sarcopenia. In addition, there was under-consumption of protein per mealtime, especially at breakfast and dinner.