Oh Chorong, No Jaekyung
Department of Food and Nutrition, Kyungsung University, Busan, Korea.
J Obes Metab Syndr. 2017 Dec 30;26(4):266-273. doi: 10.7570/jomes.2017.26.4.266.
Carbohydrate intake can impact metabolic risk factors, but related research on protein intake in the elderly is rare. Our purpose was to estimate protein intake and explore how different levels of protein intake influence metabolic risk factors in Korean older adults.
Data were obtained from men aged 51-70 years (n=1,735), men aged ≥71 years (n=700), women aged 51-70 years (n=2,305), and women aged ≥71 years (n=957). Health and dietary data were obtained from the Korean National Health and Nutrition Examination Survey of 2010-2011.
Relative to the recommended protein intake based on the Dietary Reference Intakes for Koreans, inadequate intake was higher in women and super-aging groups than in others. Women had an increased risk of having metabolic risk factors. After adjustment for age and sex, compared with those in the highest quartile of protein intake levels (>1.2 g protein/kg body weight/day), participants in the lowest quartile (<0.8 g protein/kg body weight/day) had increased odds ratios (ORs) for abdominal obesity (men: OR, 2.67; 95% confidence interval [CI], 2.00-3.56; women: OR, 3.42; 95% CI, 2.64-4.43), hypertriglyceridemia (men: OR, 1.44; 95% CI, 1.08-1.93; women: OR, 1.82; 95% CI, 1.45-2.29), and high fasting blood glucose (men: OR, 1.41; 95% CI, 1.07-1.87; women: OR, 2.03; 95% CI, 1.48-2.79).
Protein intake (<0.8 g protein/kg body weight/day) lower than the recommend level was associated with a higher risk of metabolic abnormalities in Korean older adults. In particular, lower intake of protein contributed to a higher prevalence of metabolic risk factors in women than in men.
碳水化合物摄入会影响代谢风险因素，但关于老年人蛋白质摄入的相关研究较少。我们的目的是估计韩国老年人的蛋白质摄入量，并探讨不同水平的蛋白质摄入如何影响其代谢风险因素。
数据来自51至70岁男性（n = 1735）、71岁及以上男性（n = 700）、51至70岁女性（n = 2305）以及71岁及以上女性（n = 957）。健康和饮食数据取自2010 - 2011年韩国国家健康与营养检查调查。
相对于基于韩国人膳食参考摄入量的推荐蛋白质摄入量，女性和高龄组的蛋白质摄入不足情况高于其他组。女性患代谢风险因素的风险增加。在对年龄和性别进行调整后，与蛋白质摄入量处于最高四分位数（>1.2克蛋白质/千克体重/天）的参与者相比，处于最低四分位数（<0.8克蛋白质/千克体重/天）的参与者腹部肥胖的比值比（OR）升高（男性：OR，2.67；95%置信区间[CI]，2.00 - 3.56；女性：OR，3.42；95% CI，2.64 - 4.43）、高甘油三酯血症（男性：OR，1.44；95% CI，1.08 - 1.93；女性：OR，1.82；95% CI，1.45 - 2.29）以及空腹血糖高（男性：OR，1.41；95% CI，1.07 - 1.87；女性：OR，2.03；95% CI，1.48 - 2.79）。
低于推荐水平的蛋白质摄入量（<0.8克蛋白质/千克体重/天）与韩国老年人代谢异常的较高风险相关。特别是，蛋白质摄入量较低导致女性代谢风险因素的患病率高于男性。
