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  1. #1
    Senior Member Snicklefritz's Avatar
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    Hincapie's legs - why those veins?

    So why does he have this major vein-popping out thing going on?
    I'm curious what causes this. At least from what I've seen, if someone
    gets it, that get it really bad. I've not seen it on many women though.

  2. #2
    Isaias NoRacer's Avatar
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    There's a guy on my race team who has the same "condition"--maybe not quite as prominent as Hincapie's legs, but very recognizable as the same thing.
    2009 mileage = 14,738 miles; 2010 mileage = 15,234 miles; 2011 mileage = 17,344 miles; 2012 mileage = 11,414 miles; 2013 = 12,169

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    . botto's Avatar
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    Quote Originally Posted by Snicklefritz
    So why does he have this major vein-popping out thing going on?
    I'm curious what causes this. At least from what I've seen, if someone
    gets it, that get it really bad. I've not seen it on many women though.
    because he forgot to use the search engine.

  4. #4
    Giving you the business. Cypress's Avatar
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    Quote Originally Posted by botto
    because he forgot to use the search engine.

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    You have received an infraction at Bike Forums.

  5. #5
    more ape than man timmhaan's Avatar
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    side effect of too much Optygen.

  6. #6
    Burning Matches. ElJamoquio's Avatar
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    Or not enough. The study wasn't conclusive.
    Reacting is mind candy; it requires no thought. Thinking is tedious.

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  7. #7
    Senior Member
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    Quote Originally Posted by botto
    because he forgot to use the search engine.

    Nice one.

  8. #8
    Dirt-riding heretic DrPete's Avatar
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    They're varcicose veins. It comes from a failure of the one-way valves in the leg veins that usually keep blood moving up toward the heart. Because of the back-pressure that develops, the veins enlarge.
    "Unless he was racing there was no way he could match my speed."

  9. #9
    Realist Greg180's Avatar
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    Quote Originally Posted by botto
    because he forgot to use the search engine.
    Wheres the love for your favorite Snicklefritz?

  10. #10
    Senior Member 7rider's Avatar
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    Quote Originally Posted by DrPete
    They're varcicose veins. It comes from a failure of the one-way valves in the leg veins that usually keep blood moving up toward the heart. Because of the back-pressure that develops, the veins enlarge.
    I guess my question would be if there's anything about cycling or other specific jobs or sports that might contribute to varicose veins. My wife used to stand and work at the lab bench all day long, and she says that contributed to her varicose veins, but I guess there are some congenital factors too.
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  11. #11
    Senior Member Snicklefritz's Avatar
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    Quote Originally Posted by 7rider
    I guess my question would be if there's anything about cycling or other specific jobs or sports that might contribute to varicose veins. My wife used to stand and work at the lab bench all day long, and she says that contributed to her varicose veins, but I guess there are some congenital factors too.

    Yeah that's what I was wondering. What's the scoop DrPete?
    You must be really busy because I haven't seen any new photoshop masterpieces from you lately.

  12. #12
    Dirt-riding heretic DrPete's Avatar
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    Quote Originally Posted by 7rider
    I guess my question would be if there's anything about cycling or other specific jobs or sports that might contribute to varicose veins. My wife used to stand and work at the lab bench all day long, and she says that contributed to her varicose veins, but I guess there are some congenital factors too.
    It's mainly congenital. I think the only thing specific about cycling is that you notice more because of all the shaved legs. At least that's the opinion of the vascular surgeons I work with...

    I stand a lot at work and have the genes, so it's only a matter of time. Good thing I can get a deal on getting them fixed.
    "Unless he was racing there was no way he could match my speed."

  13. #13
    Senior Member Snicklefritz's Avatar
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    Quote Originally Posted by DrPete
    It's mainly congenital. I think the only thing specific about cycling is that you notice more because of all the shaved legs. At least that's the opinion of the vascular surgeons I work with...

    I stand a lot at work and have the genes, so it's only a matter of time. Good thing I can get a deal on getting them fixed.
    yeah, you could probably even fix them yourself after work.

  14. #14
    Senior Member VT Biker's Avatar
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    Quote Originally Posted by DrPete
    It's mainly congenital. I think the only thing specific about cycling is that you notice more because of all the shaved legs. At least that's the opinion of the vascular surgeons I work with...

    I stand a lot at work and have the genes, so it's only a matter of time. Good thing I can get a deal on getting them fixed.
    Hey - Dr. Pete
    Ignoring the cosmetic issues, would vericose veins be something that would impact racing/riding performance? I mean, if the result is due to a lack of blood flow up to the heart on the way through the circulatory system, I would take the logical assumption that this would impact blood/oxygen flow, no?

  15. #15
    It's MY mountain DiabloScott's Avatar
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    Quote Originally Posted by DrPete
    They're varcicose veins. It comes from a failure of the one-way valves in the leg veins that usually keep blood moving up toward the heart. Because of the back-pressure that develops, the veins enlarge.
    So these check valves fail shut? Or open?

    If they fail shut then there's no blood flowing through there at all, and if they fail open then the blood goes backwards in between heart beats. Neither one sounds like it would cause a build up of pressure, must be something else going on.
    http://diabloscott.blogspot.com/

  16. #16
    Dirt-riding heretic DrPete's Avatar
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    Quote Originally Posted by VT Biker
    Hey - Dr. Pete
    Ignoring the cosmetic issues, would vericose veins be something that would impact racing/riding performance? I mean, if the result is due to a lack of blood flow up to the heart on the way through the circulatory system, I would take the logical assumption that this would impact blood/oxygen flow, no?
    It really wouldn't. The main symptoms that you get with varicose veins are legs that feel sort of tired/fatigued/heavy, but many people don't even have these symptoms and it's purely a cosmetic thing. The amount of reflux it takes into the superficial veins of the legs to cause varicose veins is pretty small when compared to the total venous return from the leg.

    Clear as mud?
    "Unless he was racing there was no way he could match my speed."

  17. #17
    Dirt-riding heretic DrPete's Avatar
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    Quote Originally Posted by DiabloScott
    So these check valves fail shut? Or open?

    If they fail shut then there's no blood flowing through there at all, and if they fail open then the blood goes backwards in between heart beats. Neither one sounds like it would cause a build up of pressure, must be something else going on.
    The valves fail open, but you're forgetting that gravity is at play too. The reason that veins in the legs have one-way valves is because gravity is working on the blood too, and when standing your legs are far below the pump. So the pressure in the deep veins of the legs is relatively high. That's why patients who have symptoms generally only notice them when standing or walking for a while. If you elevate your legs, for instance, gravity is working for you so the blood will go back to the heart even if the valves are incompetent.

    The other thing to remember is that the legs have two systems of veins--the deep (big, high pressure, high flow) and the superficial (small, low pressure, low flow, but visible). As long as the deep system is open, you can totally eliminate the superficial system (a la vein stripping surgery) and have no problems.
    "Unless he was racing there was no way he could match my speed."

  18. #18
    Legs of Steel chrisvu05's Avatar
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    he's been genetically engineered to maximize sites of EPO injection

  19. #19
    Senior Member
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    Sean Yates pwns Hincapie....they were truly frightening.

    Makes George's legs look like Mariah Carey's.

  20. #20
    It's MY mountain DiabloScott's Avatar
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    Quote Originally Posted by DrPete
    The valves fail open, but you're forgetting that gravity is at play too. The reason that veins in the legs have one-way valves is because gravity is working on the blood too, and when standing your legs are far below the pump. So the pressure in the deep veins of the legs is relatively high. That's why patients who have symptoms generally only notice them when standing or walking for a while. If you elevate your legs, for instance, gravity is working for you so the blood will go back to the heart even if the valves are incompetent.
    .
    Well the pressure in your leg veins would be the same whether the valves are working or not - because the elevation gain back to your heart is the same. The valves help to prevent backflow in between pulses of pressure.

    I'm seeing this from a hydraulic engineer viewpoint, not a medical one, but physics is physics.
    http://diabloscott.blogspot.com/

  21. #21
    Dirt-riding heretic DrPete's Avatar
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    Quote Originally Posted by DiabloScott
    Well the pressure in your leg veins would be the same whether the valves are working or not - because the elevation gain back to your heart is the same. The valves help to prevent backflow in between pulses of pressure.

    I'm seeing this from a hydraulic engineer viewpoint, not a medical one, but physics is physics.
    It takes minimal back pressure to dilate the superficial veins, though. In addition to reflux down the vein, there are connecting veins called perforators which, if incompetent, also release some pressure from the deep system to the superficial system, and again it doesn't take much added pressure to plump up the superficial system.

    there are other factors that contribute to the pressure and subsequent venous return in the deep system, like the contraction of the calf muscles, which has been shown to assist in venous return.

    I'm probably just doing a poor job of describing things in engineer-ese. There's a reason I was a biology major.
    "Unless he was racing there was no way he could match my speed."

  22. #22
    Burning Matches. ElJamoquio's Avatar
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    Quote Originally Posted by DrPete
    the valves are incompetent.
    From here on out I am going to use this phrase whenever I am discussing failed valves.
    Reacting is mind candy; it requires no thought. Thinking is tedious.

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  23. #23
    Dirt-riding heretic DrPete's Avatar
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    Quote Originally Posted by ElJamoquio
    From here on out I am going to use this phrase whenever I am discussing failed valves.
    Hey, it's the doctor word for it...
    "Unless he was racing there was no way he could match my speed."

  24. #24
    Slow'n'Aero DrWJODonnell's Avatar
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    Quote Originally Posted by DiabloScott
    Well the pressure in your leg veins would be the same whether the valves are working or not - because the elevation gain back to your heart is the same. The valves help to prevent backflow in between pulses of pressure.

    I'm seeing this from a hydraulic engineer viewpoint, not a medical one, but physics is physics.
    while this is true from a physics standpoint, veins are not arteries. As such, when you mention pulses of pressure, you are likely talking about heart "pulse pressure" which is nonexistant in these superficial viens. The valves DO maintain compartmentalization of fluid (blood), and assuming evenly spaced valves (not quite true), when one fails, the one below has to deal with the gravitational pressure (weight/mass) of twice as much blood on a single valve. This in turn causes other valves to fail, and before you know it, varicosities.

  25. #25
    Giving you the business. Cypress's Avatar
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    All this way and no pics????




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