Devgun M S, Johnson B E, Paterson C R
Br J Dermatol. 1982 Sep;107(3):275-84. doi: 10.1111/j.1365-2133.1982.tb00357.x.
There are many types of sun-beds, sun-benches and sun-panels containing fluorescent tubes which, because of their predominantly UV-A emission, are advertised to the public as a means of obtaining a tan without sunburn. This study reports the effects of a sun-bed on skin colour, on the protection afforded against sunburn, and on vitamin D formation. Side-effects are also recorded. It was shown that the sun-bed emits mainly UV-A but very little UV-B and some tanning occurred in most subjects. However, no correlation was observed between the subjects' stated ability to tan and the degree of pigmentation achieved at the end of the treatment. Most subjects also had itching and erythema, and three had polymorphic light eruption. Although very little UV-B irradiation was present, a significant increase in serum levels of 25-hydroxyvitamin D occurred, and possible explanations of this surprising finding are discussed. While the sun-bed proved popular with the subjects, only a modest tan was achieved and the incidence of side-effects appeared to limit the value of this type of appliance, especially with regard to the prevention of vitamin D deficiency.
有多种类型的日光浴床、日光长椅和日光板，其中装有荧光灯管，由于其主要发射紫外线A，因此作为一种不会晒伤就能晒黑的方式向公众宣传。本研究报告了日光浴床对皮肤颜色、防止晒伤的保护作用以及维生素D形成的影响。还记录了副作用。结果表明，日光浴床主要发射紫外线A，但紫外线B极少，大多数受试者出现了一定程度的晒黑。然而，在受试者声称的晒黑能力与治疗结束时达到的色素沉着程度之间未观察到相关性。大多数受试者还出现瘙痒和红斑，三人出现多形性日光疹。尽管紫外线B照射极少，但血清25-羟基维生素D水平显著升高，并讨论了这一惊人发现的可能解释。虽然日光浴床在受试者中很受欢迎，但只实现了适度的晒黑，副作用的发生率似乎限制了这类器具的价值，尤其是在预防维生素D缺乏方面。
