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).
10, 11, 12. Vitamin D helps the body absorb calcium, which is important for healthy teeth and bones. It also helps maintain proper blood levels of calcium and phosphorus. 10, 11, 12. Vitamin E is an antioxidant that plays a role in the formation of red blood cells.10, 11, 12. Vitamin K is required for normal coagulation of the blood. Some studies suggest that it helps maintain bone health in the elderly.itamins are either water-soluble (such as vitamin C and the B vitamins) or fat-soluble (A, D, E, and K). Water-soluble vitamins are absorbed by the intestine and carried by our blood to specific body tissues where they are needed.