This study involves you with providing a small sample of blood before (at the pre-race exhibition) and after the marathon.
The study is split into 2. You can participate in either study 1a or study 1a and 1b.
Study 1a – this will require 2 blood samples. The first sample will be taken at the pre-race exhibition and the second sample will be taken shortly after you finish the race in the finish line medical tent.
Study 1b – in addition to the above, blood samples will be taken 1, 3, 6 and 24 hours after you finish the marathon. These blood samples will be taken at the Brighton Hilton Hotel and you will be provided with a meal voucher to help you recover and refuel whilst you wait.