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Despite long sunlight hours in the Middle East, indigenous women have been shown to experience low vitamin D levels, generally considered as a consequence of the cultural norm of keeping the skin covered.1 However, vitamin D deficiency is also endemic (91%) in Middle Eastern sportsmen with a more marked deficiency in the youngest adult.2 Historical literature suggests that ultraviolet light and vitamin D may have a role in optimising athletic performance,3 but there is limited evidence to support this hypothesis as a 1-year prospective trial of vitamin D3 supplementation did not increase grip strength in Lebanese adolescents.4
To assess vitamin D deficiency in adolescent Qatari girls …
Competing interests None.
Patient consent Obtained.
Ethics approval This study was conducted with the approval of the human research ethics committee from the Qatar Orthopaedic Sports Medicine Hospital.
Provenance and peer review Not commissioned; externally peer reviewed.