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Old 08-25-2011, 10:49 AM   #2581
Andrew Wilson
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Old 08-25-2011, 10:50 AM   #2582
Andrew Wilson
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This is crazy.
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Old 08-25-2011, 10:55 AM   #2583
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WOW
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Old 08-25-2011, 11:22 AM   #2584
Andrew Wilson
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oh my god.
that's it, I'm done, I can't handle this anymore
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Old 08-25-2011, 11:49 AM   #2585
Geoffrey Thompson
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Originally Posted by Andrew Wilson View Post
that's it, I'm done, I can't handle this anymore, I'm fucking done
But, again, like I said, you have to be careful drawing conclusions here. You have a lot of people, you have a lot of people getting pregnant, so you're going to have a bunch of miscarriages no matter what, and the ones who miscarry may just be more likely to talk about it. You have to be very careful of confirmation bias, looking for something to confirm your thinking. This isn't like rhabdo where you don't expect it to happen with a normal, sane exercise routine. This is something you expect to happen upwards of 25% of the time even if you're doing things right. I wouldn't be terribly surprised if some methods of CrossFitting might, in fact, be bad during early pregnancy, but I wouldn't bet on it (or, at least, not on a big effect size compared to the large, known effects).
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Old 08-25-2011, 11:50 AM   #2586
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I wonder how widespread that is.

Miscarrying because of exertional effort. Crossfit is not like jogging or swimming or even something like bodybuilding.

I wouldn't recommend OL or PL to a pregnant lady either.
These idiots really should just scale the intensity and restrict movements for a change. I used to see a very pregnant young lady at the gym busting her ass on the treadmill (walking) at an incline 5x per week. Gets the blood flowing, non-impact, safe, etc.

2 months after the birth of her baby girl you couldn't tell she was even pregnant and she was back to the heavy(ish) weight circuits she used to to AND running HIIT sprints.
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Old 08-25-2011, 12:03 PM   #2587
Arien Malec
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I had a long post worked up, but then I found this:

http://www.ncbi.nlm.nih.gov/pubmed/17877774

High intensity exercise + pregnancy is just dumb.
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Old 08-25-2011, 12:41 PM   #2588
Steve Shafley
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That stuff is hard to read. Terrible emotionally for those involved and for those who love kids.
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Old 08-25-2011, 01:02 PM   #2589
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Recurrent pregnancy loss (RPL) or recurrent miscarriage (medically termed habitual abortion) is the occurrence of three consecutive miscarriages. If the proportion of pregnancies ending in miscarriage is 15%, then the probability of two consecutive miscarriages is 2.25% and the probability of three consecutive miscarriages is 0.34%.
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Old 08-25-2011, 01:03 PM   #2590
Geoffrey Thompson
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Quote:
Originally Posted by Arien Malec View Post
I had a long post worked up, but then I found this:

http://www.ncbi.nlm.nih.gov/pubmed/17877774

High intensity exercise + pregnancy is just dumb.
I retract all my previous statements about how we shouldn't hastily draw conclusions from the CF dataset.

Reebok and Crossfit hate children.

EDIT: That's a bad hazard ratio, by the way, esp. given the high base rate of failure in the controls.
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