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目的探讨北京市城区老年妇女维生素D营养状况与体成分的关系。方法随机抽取北京市60岁以上老年绝经妇女400名,年龄中位数为67.8岁。放射免疫法测定血清25-羟维生素D[25(OH)D]浓度,双能X线吸收法(DEXA)测定全身体成分。结果血清25(OH)D平均为(14.4±5.7)ng/ml,维生素D与全身、髋部及双下肢的体脂百分比(PBF)显著负相关(r=-0.17～-0.10,P<0.05)。维生素D缺乏和不足者全身、髋部和下肢的PBF高于维生素D适宜者;其中,全身PBF分别高7.4%和3.7%(P<0.05)。结论北京城区老年妇女血清维生素D水平较低,而维生素D水平较低者的体脂和PBF水平较高。
Objective To investigate the relationship between vitamin D status and body composition of elderly women in urban areas of Beijing. Methods 400 elderly menopausal women over the age of 60 in Beijing were randomly selected, with a median age of 67.8 years. Radioimmunoassay was used to determine the serum 25-hydroxyvitamin D [25 (OH) D] concentration and whole body composition was determined by dual-energy X-ray absorptiometry. Results Serum 25 (OH) D was (14.4 ± 5.7) ng / ml on average, and there was a significant negative correlation between vitamin D and total body fat (PBF) in whole body, hip and lower extremities (r = -0.17-0.10, P <0.05 ). The PBFs of the whole body, hip and lower extremities of vitamin D deficiency and deficiency were higher than those of vitamin D, and the whole body PBF were 7.4% and 3.7% higher (P <0.05). Conclusions The serum levels of vitamin D in elderly women in urban Beijing are lower than those in lower levels of vitamin D.