阳光保护因子30在游泳者的无机和有机防晒之间持久性的比较:双盲随机临床试验
Karin Rachmani1, Shannaz Nadia Yusharyahya1, Adhimukti Sampurna1
1Department of Dermatology and Venereology, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo General Hospital, Jakarta, Indonesia.
JMIR dermatology
|August 26, 2023
概括
无机防晒在游泳期间提供比有机防晒更好的阳光保护因子 (SPF) 持久性. 这项研究发现,与有机选项相比,在游泳1.5小时后,无机防晒保持了更高的SPF.
科学领域:
- 皮肤病学 皮肤病学
- 照相保护 照相保护
- 化品科学 化品科学
背景情况:
- 户外游泳者因长时间暴露在阳光下而面临风险,包括晒伤.
- 防晒的有效性可能会受到汗水,摩擦和水的影响,从而降低其太阳保护因子 (SPF).
- 防晒分为无机或有机,每一种都有不同的特性,影响身体活动期间的皮肤粘附和耐用性.
研究的目的:
- 为了评估和比较SPF 30持久性无机和有机防晒在游泳1.5小时后.
- 为了确定哪种防晒类型在水生环境中提供了对紫外线辐射的优越保护.
主要方法:
- 一个随机的,分体的,双盲的临床试验进行.
- 参与者在背上使用了无机和有机防晒.
- 在1.5小时游泳期间之前和之后测量了SPF水平.
主要成果:
- 无论是无机的还是有机的防晒,在游泳后,SPF在统计学上显著下降 (P<.001).
- 无机防晒的SPF从27的中位数下降到12.3.3.
- 有机防晒的SPF从中位数30下降到9.9,无机防晒显示出明显更好的SPF持久性 (P=.02).
结论:
- 在长时间游泳后,无机和有机防晒都会减少SPF.
- 与有机防晒相比,无机防晒在游泳者身上表现出更高的SPF持久性.
相关概念视频
Bioavailability Study Design: Healthy Subjects Versus Patients
Bioavailability studies are essential for evaluating a drug's therapeutic efficacy and understanding its absorption patterns under various physiological conditions. Conducting such studies on target patient populations provides more relevant data by simulating real-world disease states. However, practical challenges often necessitate the use of young, healthy adult volunteers as study subjects.Patients may exhibit altered drug absorption patterns due to the effects of the disease itself,...
Bioequivalence studies: Biowaivers
In certain scenarios, in vitro dissolution tests can replace in vivo bioequivalence studies. This is particularly true when a drug product, though available in varying strengths, maintains proportional similarity in its active and inactive ingredients. In such cases, the need for in vivo bioequivalence studies for lower strength variants may be waived, provided dissolution tests and in vivo studies on the highest strength yield satisfactory results.Bioequivalence can be indicated through...


