AGING, TOTAL-BODY POTASSIUM, FAT-FREE MASS, AND CELL MASS IN MALES AND FEMALES BETWEEN AGES 18 AND 85 YEARS
AGING, TOTAL-BODY POTASSIUM, FAT-FREE MASS, AND CELL MASS IN MALES AND FEMALES BETWEEN AGES 18 AND 85 YEARS
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DOI：
10.1093/geronj/27.4.438
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发表时间：
1972-01-01
期刊：
影响因子：
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通讯作者：
NOVAK, LP
中科院分区：
文献类型：
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作者：
NOVAK, LP
通过计算全身天然放射性 40K 来估算 215 名健康男性和 305 名 18 至 85 岁健康女性的总 K 值。男女体内总钾离子随着年龄的增长而下降，男性从 56.1 m-equiv/kg 下降到 43.4，女性从 45.6 下降到 37.6；在所有年龄段，男性的总体 K 值相对高于女性。在两性中，体脂百分比、去脂质量和细胞质量的趋势相似，尽管幅度不同；男性脂肪随年龄增长从 17.8% 增加到 36.2%，女性从 33.0% 增加到 44.8%；去脂质量从 82.2% 下降至 63.8% 和 67.0% 至 55.2%，细胞质量从 46.6% 下降至 36.2% 和 38.0% 至 31.3%。
Estimations of total body K by counting naturally radioactive 40K in the whole body were made on 215 healthy men and 305 healthy women 18 to 85 years old. Total body K decreased with age in both sexes, in men from 56.1 m-equiv/kg to 43.4 and in women from 45.6 to 37.6; at all ages, men had relatively more total body K than women. In both sexes, the trends of the percentages of body fat, fat-free mass and cellular mass were similar although the magnitudes were different; in men fat increased with age from 17.8 to 36.2%, in women from 33.0 to 44.8%; fat-free mass decreased from 82.2 to 63.8% and 67.0 to 55.2%, and cellular mass decreased from 46.6 to 36.2% and 38.0 to 31.3%.