Journal of Nutrition and Health

The Korean Nutrition Society (한국영양학회)
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Serum 25-Hydroxyvitamin D Status in Wintertime in Premenopausal Working Women

일부 폐경전 성인직장여성의 겨울철 혈청 25-Hydroxyvitamin D상태에 관한 연구

  • Lim, Hwa-Jae (Department of Food and Nutrition, Research Institute of Life Sciences, Dong-eui University) ;
  • Kim, Jung-In (School of Food and Life Science, Biohealth Product Research Center, Food Science Institute, Inje University)
  • 임화재 (동의대학교 식품영양학과, 생활과학연구소) ;
  • 김정인 (인제대학교 의생명공학대학 식품생명과학부, 바이오헬스소재연구센터 및 식품과학연구소)
  • Published : 2006.10.31
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Abstract

This study was performed to estimate serum 2S-hydroxyvitamin D (25-OHD) level in wintertime and to evaluate the relationship between serum 25-OHD level and associated factors in 50 premenopausal working women aged 30-49 y in Busan. The serum 25-OHD level was measured by radioimmunoassay. Data for physiological characteristics, lifestyle factors, physical activity and nutrient intake was assessed by questionnaire including information about outdoor activity time, daily activity diary and 24hr recall method. The mean vitamin D intake was $4.24{\mu}g$, which corresponded to 84.9% of the Korean RDA. The mean level of serum 25-OHD was 25.7 ng/mL. Vitamin D deficiency (25-OHD < 7nmol/L) and toxicity $(25-OHD{\geq}75\;nmol/L)$ were not found in the subjects. However, the prevalence of vitamin D insufficiency (25-OHD < 15 nmol/L) and hypovitaminosis D (25-OHD < 30 nmol/L) were 12% and 60% respectively. The serum 25-OHD level showed positive significant correlations with the duration of outdoor activity per weekdays (p < 0.05). Our findings suggest that hypovitaminosis D was common in the subjects in wintertime. So nutritional education for increasing outdoor activities is needed for premenopausal working women to increase vitamin D status in wintertime.

Keywords

References

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