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Published 3 March 2009, doi:10.1136/bmj.a2997
Cite this as: BMJ 2009;338:a2997
Passive sun reduction strategies, such as shaded areas in schools, are recommended
| The first 150 words of the full text of this article appear below. |
In their cluster randomised controlled trial (doi:10.1136/bmj.b95), Dobbinson and colleagues assess whether students in 51 secondary schools in Australia use or avoid newly shaded areas created by sun sails.1 They found that a significantly higher number of students used the shaded areas during their lunch breaks in intervention schools. This shows that sun sails are a practical way of passively reducing sun exposure in teenagers. The results are encouraging, but it is hard to measure the benefit of the intervention because we do not know how many students used the shaded and unshaded outdoor areas or stayed indoors instead during the breaks.
The results are in line with a non-randomised controlled Swedish study in preschool children, in which situating the playground under a canopy of trees reduced ultraviolet radiation doses by up to 41%.2 In Toowoomba, Australia, optimising the timing of morning and lunchtime breaks in schools has
Elisabeth Thieden, senior research scientist
1 Department of Dermatology, D92, Bispebjerg Hospital, University of Copenhagen, DK-2400 Copenhagen, Denmark
et01@bbh.regionh.dk
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