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).
Collagen is quite strong, while elastin provides the elasticity needed for flexibility. Vitamin C is one of the most important nutrients for synthesizing collagen and elastin because your body canât produce them without it. Your supplements should also contain copper because it works with vitamin C to produce elastin. Vitamin A, zinc and iron are additional nutrients needed for collagen.