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 is one of the key factors that allow our blood to clot. It is commonly found in green leafy vegetables. Clotting is a lifesaving process that prevents us from bleeding to death if we are wounded or the skin is punctured. However, for those at risk of stroke, blood clots can ultimately be lethal.