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 C is a water-soluble vitamin also needed in our diet. It aids the synthesis of collagen, which helps the maintenance of blood vessels and tissue. It helps the blood vessels become sturdier and can help reduce bruising. The USDA recommended dietary allowance for men is 90 mg/day and 75 mg/day for women.