Poskitt E M, Cole T J, Lawson D E
Br Med J. 1979 Jan 27;1(6158):221-3. doi: 10.1136/bmj.1.6158.221.
In 110 white West Midlands children serum 25-hydroxy vitamin D (25-OHD) concentrations showed a pronounced seasonal variation, the values being highest in August and lowest in February. The concentrations correlated significantly both with recorded sunlight and with seasonal ultraviolet energy of the sunlight. Children who had had a seaside holiday the previous summer had a higher mean 25-OHD concentration than those who had not had a summer holiday away from home. Correlation between vitamin D intake and serum 25-OHD concentration was not significant.
在西米德兰兹郡的110名白人儿童中,血清25-羟维生素D(25-OHD)浓度呈现出明显的季节性变化,8月份的值最高,2月份最低。这些浓度与记录的日照以及阳光的季节性紫外线能量均显著相关。前一年夏天去过海边度假的儿童,其平均25-OHD浓度高于那些没有离开家去度暑假的儿童。维生素D摄入量与血清25-OHD浓度之间的相关性不显著。