Seasonal and geographical variations in the growth rate of infants in China receiving increasing dosages of vitamin D supplements
| Autor: | Qing-mei Shui, Tai-an Yin, Grace A. Falciglia, Mona L. Ho, Bonny Specker, E. S. Feliciano, Xue-cun Chen |
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| Rok vydání: | 1994 |
| Předmět: |
China
Dose Season of birth Growth Chine Vitamin D and neurology Medicine Humans Growth rate Vitamin D Geographic difference Sunlight Anthropometry Dose-Response Relationship Drug business.industry Body Weight Infant Newborn Infant Chinese people Body Height Infectious Diseases Pediatrics Perinatology and Child Health Food Fortified Seasons business Demography |
| Zdroj: | Journal of tropical pediatrics. 40(3) |
| ISSN: | 0142-6338 |
| Popis: | In theory, sunshine exposure is sufficient to maintain normal vitamin D concentrations for the optimal growth of newborn infants. To determine whether season of birth, latitude (north v. south) and increasing dosages of vitamin D supplements would influence the growth rate for the first 6 months of life, 255 healthy fall-and spring-born infants from two northern and two southern cities in China were randomly assigned to receive either 100, 200, or 400 IU of vitamin D a day. The study showed that season of birth and dose of vitamin D did not affect the growth rate of infants born in the same latitude, but a significant difference was found in the gain in length over the 6-month period between infants from the north and infants from the south (P = 0.0001). Regional differences among the Chinese people, other than sunshine exposure, may have influenced the difference in length gain. |
| Databáze: | OpenAIRE |
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