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  1. #1
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    Why Pregnant Women Don't Topple

    I found this very interesting...any comments?

    Wednesday, December 12, 2007
    WASHINGTON - Scientists think they have figured out why pregnant women don't lose their balance and topple over despite ever-growing weight up front.

    Evolution provided them with slight differences from men in their lower backs and hip joints, allowing them to adjust their center of gravity, new research shows.

    This elegant engineering is seen only in female humans and our immediate ancestors who walked on two feet, but not in chimps and apes, according to a study published in Thursday's journal Nature.

    "That's a big load that's pulling you forward," said Liza Shapiro, an anthropology professor at the University of Texas and the only one of the study's three authors who has actually been pregnant. "You experience discomfort. Maybe it would be a lot worse if (the design changes) were not there."

    Harvard anthropology researcher Katherine Whitcomb found two physical differences in male and female backs that until now had gone unnoticed: One lower lumbar vertebra is wedged-shaped in women and more square in men; and a key hip joint is 14 percent larger in women than men when body size is taken into account.

    The researchers did engineering tests that show how those slight changes allow women to carry the additional and growing load without toppling over - and typically without disabling back pain.

    "When you think about it, women make it look so very damn easy," Whitcomb said. "They are experiencing a pretty impressive challenge. Evolution has tinkered ... to the point where they can deal with the challenge.

    "It's absolutely beautiful," she said. "A little bit of tinkering can have a profound effect."

    Walking on two feet separates humans from most other animals. And while anthropologists still debate the evolutionary benefit of walking on two feet, there are notable costs, such as pain for pregnant females. Animals on all fours can better handle the extra belly weight.

    The back changes appear to have evolved to overcome the cost of walking on two feet, said Harvard anthropology professor Daniel Lieberman.

    When the researchers looked back at fossil records of human ancestors, including the oldest spines that go back 2 million years to our predecessor, Australopithecus, they found a male without the lower-back changes and a female with them.

    But what about men with stomachs the size of babies or bigger? What keeps them from toppling over?

    Their back muscles are used to compensate, but that probably means more back pain, theorized Shapiro, who added: "It would be a fun study to do to look at men with beer bellies to see if they shift their loads."

    ---

    On the Net:

    Nature: http://www.nature.com/nature
    I'd rather have roses on my table than diamonds on my neck. ~Emma Goldman

  2. #2
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    Re: Why Pregnant Women Don't Topple

    Women seem to be inherently attracted to anthropology. I talked to about 100 undergrduates today and all the girls wanted to do it

  3. #3
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    Re: Why Pregnant Women Don't Topple

    I believe due to the posterior counter-balance that develops during pregnancy.

    ;-)


    (ps...if you tell my wife I said this, ill deny it!)

  4. #4
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    Re: Why Pregnant Women Don't Topple

    gimme an official "badge",names address's,and a yr's supply of viagra and i'll willingly volunteer to serve the "needs" of science!?and could ya maybe kick in an allowance for fries and a coke once n' awhile!?shucks,if i hadn't quit drinkin beer awhile back,it'd be a real homerun outa da park job for me!?........just tryin ta outdo the "boys" around here!?while keepin it "civil"!?:surprised: :sunglasses: :clown: :hehe!!.....just askn....
    Last edited by lexx; 12-13-2007 at 12:59 AM.
    i do not endorse/recommend any advertising on scam.com associated with my name /posts or otherwise. thank you

  5. #5
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    Re: Why Pregnant Women Don't Topple

    Quote Originally Posted by peregrine View Post
    I found this very interesting...any comments?
    Why pregnant women don't topple?
    How about it is as simple as believing that is how God created
    women?

  6. #6
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    Re: Why Pregnant Women Don't Topple

    Quote Originally Posted by enlightenme007 View Post
    Why pregnant women don't topple?
    How about it is as simple as believing that is how God created
    women?
    Interesting hypothisis, where did you study science, Oral Roberts U?
    "When the going gets weird, the weird turn pro."
    -Hunter S. Thompson

  7. #7
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    Re: Why Pregnant Women Don't Topple

    Quote Originally Posted by enlightenme007 View Post
    Why pregnant women don't topple?
    How about it is as simple as believing that is how God created
    women?
    The world must be pretty boring for you.

  8. #8
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    Re: Why Pregnant Women Don't Topple

    Quote Originally Posted by enlightenme007 View Post
    Why pregnant women don't topple?
    How about it is as simple as believing that is how God created
    women?
    If there ever was a good god, then it would consider this to be a sacrilege

  9. #9
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    Re: Why Pregnant Women Don't Topple

    Quote Originally Posted by kazza View Post
    The world must be pretty boring for you.
    God made it that way.
    "Believe nothing just because a so-called wise person said it. Believe nothing just because a belief is generally held. Believe nothing just because it is said in ancient books. Believe nothing just because it is said to be of divine origin. Believe nothing just because someone else believes it. Believe only what you yourself test and judge to be true."

  10. #10
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    Re: Why Pregnant Women Don't Topple

    Quote Originally Posted by Qi123 View Post
    God made it that way.
    Lol. That was funny :

  11. #11
    LogicallyYours's Avatar
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    Re: Why Pregnant Women Don't Topple

    I still think it's the development of the rear facing posterior counter balance.

  12. #12
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    Re: Why Pregnant Women Don't Topple

    Quote Originally Posted by jigglepete View Post
    Interesting hypothisis, where did you study science, Oral Roberts U?
    That was good, I love science it helps us to understand the complexities of God who created everything.

  13. #13
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    Re: Why Pregnant Women Don't Topple

    Quote Originally Posted by kazza View Post
    The world must be pretty boring for you.
    Kazza, what's up, it's been awhile?
    The world is far from boring for those that have put their faith in Jesus' death on a cross as being payment for our sin and his resurrection as proof he defeated death, thus we can have ETERNAL LIFE. That is pretty exciting. We all have different callings, likes, etc. and although I do like science, what makes this life exciting has nothing to do with science, I would say other than God, what is most exciting are the people in my life.

  14. #14
    LogicallyYours's Avatar
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    Re: Why Pregnant Women Don't Topple

    Bible thumping ass clown

  15. #15
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    Re: Why Pregnant Women Don't Topple

    Quote Originally Posted by LogicallyYours View Post
    Bible thumping ass clown
    What are you so angry about?

  16. #16
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    Re: Why Pregnant Women Don't Topple

    Quote Originally Posted by enlightenme007 View Post
    Kazza, what's up, it's been awhile?
    The world is far from boring for those that have put their faith in Jesus' death on a cross as being payment for our sin and his resurrection as proof he defeated death, thus we can have ETERNAL LIFE. That is pretty exciting. We all have different callings, likes, etc. and although I do like science, what makes this life exciting has nothing to do with science, I would say other than God, what is most exciting are the people in my life.
    Its not about whether you can have fun or not, science takes on an ongoing search of truth.

    when you said:
    Quote Originally Posted by enlightenme007 View Post
    Why pregnant women don't topple?
    How about it is as simple as believing that is how God created
    women?
    You committed what would be considered Blasphemy amongst scientists. You an always use the goddunit excuse to fill the gaps but then we don't learn anything, look:

    How do the planets move in orbits around the sun?
    -god made it so they did

    Why do action potentials always travel in one direction?
    -god did it that way

    Why do animals work together in the wild?
    -god meant for it to be that way

    Why is the sky blue?
    -god designed it like that for us

    Why is it that when you heat up potassium, it gives of a lilac flame?
    -god thought it looked nice so she made it that way

    ....If you don't know the answer to a question you can always say that god did it that way but by doing so all you've done is avoid having to look for an answer. Even if god had made everything, what we can find is how god did it and a logical why. Without searching for the truth we learn nothing and instead lead very mundane lives. Why do you think so many people become scientists? It is because this search for answers is so fulfilling that you can never escape it. Even the very religious scientists agree with that and would find it very disrespectful to their god if they were to ignore whats inherent in their nature

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