Ironman triathletes must complete the bicycle course at the World Championships in 10 hours, 30 minutes. The top women, however, will finish the bike race in about half that time. As with the swimming cutoff, failure to achieve the bicycle cutoff time eliminates the triathlete from the event.
In the past, the requirements for vitamin K only considered its classical function in coagulation; an RDA was given for vitamin K in the United States (54, 58) and a safe and adequate intake level was given in the United Kingdom (65).
Vitamin K Dependent Clotting Factors. Vitamin K is necessary for your body to clot blood after an injury. Photo Credit Koldunov/iStock/Getty Images. Vitamin K plays a role in your blood clot formation and bone health. Many types of food contain vitamin K, and it is rare to have a deficiency. Vitamin K is an essential cofactor in the activation of certain proteins within your body. Without the activation step, certain biochemical reactions cannot be completed. A vitamin K deficiency will predispose you to bleeding, and blocking vitamin K prevents inappropriate clotting.