SODIUM AND POTASSIUM INTAKE AND BALANCE IN ADULTS CONSUMING SELF-SELECTED DIETS
SODIUM AND POTASSIUM INTAKE AND BALANCE IN ADULTS CONSUMING SELF-SELECTED DIETS
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DOI：
10.1093/ajcn/40.4.786
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发表时间：
1984-01-01
影响因子：
7.1
通讯作者：
SMITH, JC
中科院分区：
文献类型：
--
作者：
HOLBROOK, JT;PATTERSON, KY;SMITH, JC
28名成年人，12名男性和16名女性，参加了一项为期1年的研究，旨在准确评估每日营养摄入量。所有受试者都住在家里，食用自选的饮食，并保持全年详细的每日饮食记录。在四个为期7天的平衡研究中，一年中的每个季节，通过原子吸收光谱法分析膳食，饮料，尿液和粪便中的Na和K含量。总摄入量平均为钠3.4 g/天，钾2.8 g/天。分析的所有饮食的Na：K比平均为1.3。Na和K的营养密度分别为1.8和1.5 g/1000 kcal。钠和钾的表观吸收率分别为98%和85%，在广泛的摄入量范围内没有显着变化。尿中钠和钾的平均排泄量分别为总摄入量的86%和77%。Na +0.47 g/d和K +0.28 g/d的平均代谢平衡为正值。这些数据提供了有用的信息，有关膳食摄入量，排泄量和平衡的Na和K的成人分析测定的基础上。
Twenty eight adults, 12 men and 16 momen, participated in a 1-yr study designed to assess daily nutrient intake accurately. All subjects lived at home, consumed selfchosen diets, and maintained a detailed daily dietary record throughout the year. During four 7-day balance studies, 1 in each season of the year, meals, beverages, urine, and feces were analyzed for Na and K content by atomic absorption spectrometry. Total intakes averaged 3.4 g/day for Na and 2.8 g/day for K. The Na:K ratio for all diets analyzed averaged 1.3. Nutrient densities of Na and K were 1.8 and 1.5 g/1000 kcal, respectively. Apparent absorptions of Na and K were 98 and 85%, respectively, and did not change significantly over the wide range of intakes. Average urinary excretions of Na and K were 86 and 77% of total intake, respectively. Mean metabolic balances were positive for Na + 0.47 g/day, and K + 0.28 g/day. The data provide useful information concerning the dietary intakes, excretions, and balances of Na and K for adults based on analytic determination.