تقرير
Zinc, copper, and nitrogen balances during bed rest and fluoride supplementation in healthy adult males
| العنوان: | Zinc, copper, and nitrogen balances during bed rest and fluoride supplementation in healthy adult males |
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| المؤلفون: | Krebs, J. M, Schneider, V. S, LeBlanc, A. D |
| المصدر: | The American journal of clinical nutrition. 47(3) |
| بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 1988. |
| سنة النشر: | 1988 |
| مصطلحات موضوعية: | Life Sciences (General) |
| الوصف: | The effects of bed rest and fluoride supplementation on zinc, copper, and nitrogen balances and Zn and Cu serum levels were measured in 15 healthy males. Subjects aged 19-54 y remained on a metabolic research ward for 10 wk. During weeks 1-5, subjects were ambulatory. During wks 6-10 they remained in continuous bed rest. During weeks 3-10 nine subjects received 10 or 20 mg F/d as sodium fluoride. Daily urine and weekly fecal composites were made and biweekly fasting blood samples were taken. Dietary intakes were 1.40 +/- 0.17 mg Cu/d (22.0 +/- 2.7 mumol Cu/d), 10.82 +/- 0.49 mg Zn/d (165.6 +/- 7.6 mumol Zn/d), and 14.27 +/- 0.23 g N/d (1019 +/- 16 mmol N/d). Bed rest increased urinary Zn and N excretions and fecal Zn excretions and decreased Zn balance (p less than 0.05) whereas Cu balance was unchanged. During bed rest, F supplementation increased Zn and N balances compared with untreated control subjects (p less than 0.05). These results are compatible with bone and muscle atrophy during bed rest and increased bone formation with F supplementation. |
| نوع الوثيقة: | Report |
| اللغة: | English |
| تدمد: | 0002-9165 |
| URL الوصول: | https://ntrs.nasa.gov/citations/20050037260 |
| ملاحظات: | RR02558 RR00350 |
| رقم الأكسشن: | edsnas.20050037260 |
| قاعدة البيانات: | NASA Technical Reports |
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