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Journal of Midwifery and Reproductive Health، جلد ۹، شماره ۲، صفحات ۲۶۸۷-۲۶۹۶
عنوان فارسی
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عنوان انگلیسی Investigating the Effect of Vitamin D Supplementation on Maternal Serum 25(OH)D Levels
چکیده انگلیسی مقاله Background & aim: Although evidence confirms the importance of vitamin D supplementation in pregnancy, there is still a debate over the adequate daily doses of vitamin D intake. This study aimed to investigate the effect of 400 and 1,000 IU vitamin D/day on maternal serum 25 (OH) D levels. Methods: This quasi-experimental study was carried out on 74 healthy pregnant women between June 12 and September 22, 2019. The intervention group (n=44) received 1,000 IU vitamin D/day from 8 to 10 weeks of pregnancy for 17 weeks, while the control group (n=39) took multivitamin supplements (400 IU vitamin D/day) from 16 weeks of pregnancy for 12 weeks. Maternal serum 25 (OH) D levels were measured at 25-28 weeks of gestation. Data were analyzed in SPSS software (version 21) through the Chi-square, Student’s t-test, Mann-Whitney U, and linear regression tests. Results: There was no significant difference between the two groups at the beginning of the study in terms of 25 (OH) D concentration (P=0.23). The intake of 1,000 IU vitamin D/day had a significant (β=0.28, p < 0.001), yet small effect (effect size=0.30), on increasing serum 25 (OH) D levels after controlling the confounding variables. About half of the females who took 1,000 IU vitamin D/day had a serum 25(OH) D level less than 30 ng/dl at 25-28weeks of pregnancy. Conclusion: Even after receiving 1,000 IU/day Vitamin D, vitamin D insufficiency was still prevalent during the second trimester of pregnancy. It seems that a higher dosage of vitamin D is required for pregnant women. 
کلیدواژه‌های انگلیسی مقاله Vitamin D deficiency, pregnancy, 25-hydroxyvitamin D
نویسندگان مقاله | Zahra Moudi
Assistant Professor, Pregnancy Health Research Center, Zahedan University of Medical Sciences Zahedan, Iran


| Zahra Ayati
MSc in Midwifery Counselling, Pregnancy Health Research Center, Zahedan University of Medical Sciences, Zahedan, Iran


| Hossein Ansari
Assistant Professor, Department of Epidemiology and Biostatistics, Zahedan University of Medical Sciences, Zahedan, Iran


| Seyed Mehdi Tabatabaei
Assistant Professor, Pregnancy Health Research Center, Zahedan University of Medical Sciences Zahedan, Iran


| Mahdieh Sheikhi
PhD Student in Food and Nutrition Policy, Family Health Office, Zahedan University of Medical Sciences, Zahedan, Iran
نشانی اینترنتی https://jmrh.mums.ac.ir/article_17554.html
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Research Article
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