Department of Food and Nutrition, Kyungsung University, 309, Suyeong-ro, Nam-gu, Busan 608-736, South Korea.
Nutr Res. 2018 Mar;51:21-28. doi: 10.1016/j.nutres.2017.12.008. Epub 2017 Dec 24.
Higher protein intake could reduce metabolic syndrome (MetS) by managing body composition among Korean elderly although the research is scant. Herein, we examined the hypothesis that the optimal protein intake of Korean elderly is associated with both improvements in MetS risk as well as favorable changes in body composition. The present study employs a national data source, the Korea National Health and Nutrition Examination Survey (KNHANES, 2009), and a total 1,567 elderly (651 men and 916 women) were included in the final data analyses. The incidence of sarcopenia was significantly greater in MetS group than normal group. We observed significantly differences in the amount of protein in the participants' diet that related to sex, income, and education level. The highest protein consumption group had significantly reduced abdominal obesity (44%; 0.293-0.652, P < .001), lower HDL-cholesterol (47%, 0.316-0.683, P < .001), elevated TG (45%, 0.298-0.679, P < .001), and MetS (42%, 0.293-0.598, P < .001) compared to the other groups, after adjustment for sex, income, education level. Total muscle mass were correlated positively with protein consumption, but there was a negative correlation between protein consumption and total fat mass. The present study suggests that at least 0.8 g/kg per day of protein may reduce MetS and help manage body composition changes to mitigate MetS in Korean elderly.
较高的蛋白质摄入量可以通过管理韩国老年人的身体成分来降低代谢综合征（MetS），尽管相关研究很少。在此，我们检验了这样一个假设，即韩国老年人的最佳蛋白质摄入量与改善 MetS 风险以及身体成分的有利变化有关。本研究采用了国家数据源，即韩国国家健康和营养检查调查（KNHANES，2009 年），共有 1567 名老年人（651 名男性和 916 名女性）纳入最终数据分析。肌少症的发生率在 MetS 组明显高于正常组。我们观察到参与者饮食中蛋白质的量与性别、收入和教育水平存在显著差异。最高蛋白质摄入量组的腹部肥胖明显减少（44%，0.293-0.652，P<0.001），高密度脂蛋白胆固醇（47%，0.316-0.683，P<0.001）降低，甘油三酯升高（45%，0.298-0.679，P<0.001），代谢综合征（42%，0.293-0.598，P<0.001）与其他组相比，调整性别、收入和教育水平后。总肌肉量与蛋白质摄入量呈正相关，但蛋白质摄入量与总脂肪量呈负相关。本研究表明，韩国老年人每天至少摄入 0.8 g/kg 蛋白质可能会降低 MetS，并有助于管理身体成分变化，以减轻 MetS。
