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标题：Iodine Intake of Japanese Male University Students: Urinary Iodine Excretion of Sedentary and Physically Active Students and Sweat Iodine Excretion during Exercise
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作者：Masashige SUZUKI ; Tomohiro TAMURA
期刊名称：Journal of Nutritional Science and Vitaminology
印刷版ISSN：0301-4800
电子版ISSN：1881-7742
出版年度：1985
卷号：31
期号：4
页码：409-415
DOI：10.3177/jnsv.31.409
出版社：Center for Academic Publications Japan
摘要：We examined the urinary iodine excretion of sedentary and physically active male university students in order to estimate the iodine intake of Japanese. Iodine excretion in sweat collected during treadmill exercise was also determined in different dietary iodine levels. The mean urinary iodine excretion of 5 sedentary students during 15 consecutive days was 357μg/day (40-3, 390). When high-iodine food, i.e. seaweed, was included in meals in only 22% of the total experimental days of 5 subjects, the urinary iodine excretion was high (1, 106μg/day, 298-3, 390), but was low (153 μg/day, 40-441) when seaweeds were not consumed. An un-expectedly low mean urinary iodine excretion of 149μg/day (50-393) .was found in 10 rowing club students during 6 consecutive days of their summer training camp, probably being due to iodine losses in sweat; sweat iodine concentrations were about 37μg per liter, regardless of serum and urinary iodine levels modulated by the dietary iodine level. The present data indicate that the iodine intake of Japanese depends on the amount of seaweed consumption and that it is not necessarily as high as expected from the data obtained in the 1960s. Moreover, our findings indicate the importance of taking account of iodine loss in sweat in the evaluation of iodine nutrition for physically active persons working in hot and humid environments.
关键词：iodine intake;exercise;serum iodine;sweat iodine;urinary iodine;male university student;Japanese