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  1. #1
    Senior Member IROeunuch's Avatar
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    How come I always have to pee after riding my fixed gear bike?

    Whenever I ride from school to home, I always have to tinkle first thing! My commute is 8 miles. I walk up a bunch of flights of stairs. By the time I get inside, I really really gotta pee. It is urgent. I don't have to go before I left. What gives?

  2. #2
    bward1028
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    prostate cancer

  3. #3
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    Have you rotofixed your cog? If you'd done a search first, you'd have found that a loose cog can cause incontinence.

  4. #4
    newbie commuter
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    Maybe your seat is giving you a UTI.
    NakedSushi.net Not naked, not as much sushi as I'd like.

  5. #5
    Senior Member pirate's Avatar
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    bward, wtf is going on in your signature image?
    “When the spirits are low, when the day appears dark,
    When work becomes monotonous, when hope hardly seems worth having,
    Just mount a bicycle and go out for a spin down the road,
    Without thought on anything but the ride you are taking.”
    -Arthur Conan Doyle


  6. #6
    Senior Member akaio's Avatar
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    Quote Originally Posted by pirate View Post
    bward, wtf is going on in your signature image?
    Its an illustration of how to use a tool to disembowel a dear.

    As for peeing after riding, I dont know. Is it absolutely everytime? Do you drink lots of water prior to riding? Could be bladder issues. Id recommend talking to a doctor and not an internet forum if you are concerned about it.

  7. #7
    Fattest Thin Man Az B's Avatar
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    What male over the age of 7 says "tinkle" when referring to peeing?

    Az

  8. #8
    bward1028
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    Quote Originally Posted by pirate View Post
    bward, wtf is going on in your signature image?
    http://www.cabelas.com/prod-1/0041414228322a.shtml

    "For Sportsmen, By Sportsmen."

    All i can say is, think of the taglines they rejected...

  9. #9
    Senior Member hockeyteeth's Avatar
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    I usually forget that I have to go to the bathroom while I'm commuting. My bladder can be filled to the top before I get on my bike, but not long after I clip in I generally forget about having to go. Sucks when I finally get to my destination though.

    Maybe you do the same thing and just have short term memory loss.

  10. #10
    *****es love tarck kemmer's Avatar
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    My guess is pressure on your perenium is causeing you to either:
    1. not know you need to go while you're on the bike
    2. feel like you really need to when you get off.

    Tilt the nose your saddle down a little and see if that doesn't take care of it. Mister winkey doesn't feel numb when you're on the bike does he?

  11. #11
    Senior Member hockeyteeth's Avatar
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    Quote Originally Posted by kemmer View Post
    Mister winkey doesn't feel numb when you're on the bike does he?
    I used to go numb after 30 mins. or more in the saddle before I got my Brooks. Being supported by my sit bones more than my perenium has helped immeasurably.

  12. #12
    The Brutally Handsome Sizzle-Chest's Avatar
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    you have probably peed after getting home several times so your body is now anticipating your arrival. try holding it a few more minutes and see if you actually have to go or if your body is just tricking you
    "What kind of bike? I don't know, I'm not a bike scientist."

  13. #13
    out of shape
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    make sure you're not using a JIS crank on an ISO spindle, and for god's sake, man, don't put grease on it.

  14. #14
    Senior Member jakbikesdc's Avatar
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    I think it has something to do with the parasympathetic nervous response. When you get your adrenaline flowing the parasympathetic response starts and it causes you to retain more water, thus reducing the impulse to urinate. Once you get home and off the bike, you relax the adrenaline flow and other hormones involved in the parasymp. will allow your urination impulse to return.

    I think it would be really interesting to see how this phenomena would be affected if you had a really bad ride where every driver seemed to be pissed at your presence. But when you came home, instead of just doing your thing and relaxing, all your friends were over and we're all riled up to go riding and excited to do whatever. I wonder if your emotional and hormonal response would continue to supress the urge to piss if you went from extreme anger(from drivers and the ride) to extreme elation( from friends and excitation)? Or would you be like "Ahh, guys I really gotta piss, give me a minute".

    I get carried away sometimes when it comes to situational psychophysiology.
    We shall never achieve harmony with land, any more than we shall achieve absolute justice or liberty for people. In these higher aspirations, the important thing is not to achieve but to strive. -Aldo Leopold

  15. #15
    LF for the accentdeprived
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    Situational psychophysiology... my new favourite word.
    Quote Originally Posted by dutret
    Do you deny that you are clueless or do you just think that "moron" didn't need to be tacked on there?
    Bike on flickr and on FGG

  16. #16
    hyperemetic trashbeast*'s Avatar
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    Quote Originally Posted by jakbikesdc View Post
    I think it has something to do with the parasympathetic nervous response. When you get your adrenaline flowing the parasympathetic response starts and it causes you to retain more water, thus reducing the impulse to urinate. Once you get home and off the bike, you relax the adrenaline flow and other hormones involved in the parasymp. will allow your urination impulse to return.

    I think it would be really interesting to see how this phenomena would be affected if you had a really bad ride where every driver seemed to be pissed at your presence. But when you came home, instead of just doing your thing and relaxing, all your friends were over and we're all riled up to go riding and excited to do whatever. I wonder if your emotional and hormonal response would continue to supress the urge to piss if you went from extreme anger(from drivers and the ride) to extreme elation( from friends and excitation)? Or would you be like "Ahh, guys I really gotta piss, give me a minute".

    I get carried away sometimes when it comes to situational psychophysiology.
    Jakbikesdc - You're right about all of this, but the terminology is a little off -
    The sympathetic nervous system (not the parasympathetic) acts to inhibit urination. To do so, it releases adrenaline (just like you said).
    Meanwhile, the parasympathetic nervous system acts to stimulate urination, using acetylcholine to do so.
    They're both part of the autonomic nervous system, and it's easy to get the names confused.
    So the story should go something like this -
    While riding, your sympathetic system is activated, inhibiting urination. When you get home, the adrenaline wears off, allowing the sympathetic to stimulate urination.
    But all your friends are over (how DID they get in your house?) so you're all excited - this would involve the sympathetics again, which would go back to inhibiting the urge to piss.
    I'm not trying to be a jerk, I'm just a dork. Who happens to be reviewing physio at the moment. Which means that by posting this, I'm technically studying. AWESOME.

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    Don't listen to these quacks-- your cog is loose!

  18. #18
    roll'em high shants's Avatar
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    Quote Originally Posted by trashbeast* View Post
    While riding, your sympathetic system is activated, inhibiting urination. When you get home, the adrenaline wears off, allowing the parasympathetic to stimulate urination.
    slight correction above. just as a note: as best i can remember, both systems do this by affecting the detrusor muscle of the bladder.

  19. #19
    hyperemetic trashbeast*'s Avatar
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    Thanks shants, that was a pretty bad typo.
    & you're totally right, they both act on the detrussor (symp. inhibit the detrussor, while para stimulate it). They also act on the bladder sphincters (symp. contract the internal sphincter, while para relaxes the external sphincter).
    The ANS is pretty rad.

  20. #20
    Nun Bus Zen Existence's Avatar
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    Quote Originally Posted by hockeyteeth
    Being supported by my sit bones more than my perenium has helped immeasurably.
    Understandably so, especially if your sit bones bring more in take-home pay than your perenium, which I assume is the case.
    I mean, really, have you heard of a perenium making good money? Of course not.
    I commend you in your ability to live with your sit bones as your sugar daddy. No need to mention the utter and total embarrassment of being the sugar recipient of a perenium ...
    -Scotty

    Quote Originally Posted by V-Rock
    I sometimes like to ride with a ferret in my pants while eating blowfish sushi just to up the ante.

  21. #21
    Senior Member jamey's Avatar
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    Quote Originally Posted by Gordiep View Post
    Have you rotofixed your cog? If you'd done a search first, you'd have found that a loose cog can cause incontinence.
    i think you meant to say incoGtinence.

  22. #22
    Senior Member mavimao's Avatar
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    I always get the urge to pee when I sit down to read a book or a magazine at a store. Must mean my chain needs degreasing, eh?

  23. #23
    . bbattle's Avatar
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    Quote Originally Posted by IROeunuch View Post
    Whenever I ride from school to home, I always have to tinkle first thing! My commute is 8 miles. I walk up a bunch of flights of stairs. By the time I get inside, I really really gotta pee. It is urgent. I don't have to go before I left. What gives?
    Does this commute involve stopping at a bar for a few beers?

  24. #24
    harrospokes! fetch's Avatar
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    riser bars and ourys I KNEW IT

  25. #25
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    This forum's understanding of certain parts of the human anatomy is quite amazing. Now I'm scared.

    The solution probably does lie in your saddle angle or choice of saddle overall, but I won't contribute further.

    Except to say that if you can't find a medical solution, check your bike out and immediately replace any component without an NJS stamp. Keirin racers don't have to urinate right after racing, so it must be the NJS certification.

    Thanks folks, you really made my day.

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