Obesity before pregnancy linked to earliest preterm births, study finds

Obesity before pregnancy linked to earliest preterm births, study finds

Women who are obese before they become pregnant face an increased risk of delivering a very premature baby, according to a new study of nearly 1 million California births.

The findings from the Stanford University School of Medicine provide important clues as to what triggers extremely preterm births, specifically those that occur prior to 28 weeks of pregnancy.

The study, published in the July issue of Paediatric and Perinatal Epidemiology, found no link between maternal obesity and premature births that happen between 28 and 37 weeks of the normal 40-week gestation period. The disparity suggests that premature birth may have different causes at different stages of pregnancy.

“Until now, people have been thinking about preterm birth as one condition, simply by defining it as any birth that happens at least three weeks early,” said Gary Shaw, DrPH, professor of pediatrics and lead author of the new study. “But it’s not as simple as that. Preterm birth is not one construct; gestational age matters.”

Preterm births affect one in nine pregnancies, or more than a half-million U.S. babies per year. Prematurity can lead to lifelong health problems, such as cerebral palsy, developmental delays and impaired vision or hearing. Babies born before 28 weeks of pregnancy are at especially high risk.

High U.S. prematurity rates prompted the 2011 launch of the March of Dimes Prematurity Research Center at Stanford University School of Medicine, the first of five such centers the March of Dimes has planned across the country. The new findings are a product of the center’s work.

The study, which examined nearly all California births between January 2007 and December 2009, was the largest ever to look for population-based links between maternal obesity and prematurity. To focus on spontaneous preterm births, the researchers excluded from analysis women who were pregnant with twins or other multiples, as well as women with illnesses previously linked to prematurity, such as diabetes, high blood pressure or preeclampsia. After these exclusions, the team had 989,697 births to analyze. Births were classified by gestational age, and many factors about the mothers were considered in the analysis, including body mass index, race/ethnicity, whether they were first-time mothers, educational attainment, when prenatal care began, source of health insurance, maternal age and maternal height.

Healthy Lifestyle

For first-time mothers, obesity was linked with a substantial increase in risk of delivery before 28 weeks of pregnancy. The risk was highest at the earliest gestational ages and also at the highest levels of obesity. For instance, non-Hispanic, white first-time mothers in the most obese category were six times more likely than normal-weight women to deliver a baby between 20 and 23 weeks.

Obese women having their second or later child were also more likely to deliver very early than normal-weight women, though the risk was less pronounced than for first-time mothers.

“Ideally, as the American College of Obstetricians and Gynecologists has already recommended, women should embark upon

… Continue reading here.
Diet And Weight Loss News — Sciencedaily
— Courtesy “Science News Daily” (ScienceNewsDaily.com) <p>

Cette semaine, Lucile accueille Jessica Mellet, LA prof de Zumba Fitness, pour une s?ance de Zumba ultra-dynamique ! Au programme ? De la danse, du fitness e…

<p>This is a review of Wahoo Fitness Key for iPod/iPhone. I hope you find it helpful...

  • Connects your iPhone to any ANT+ fitness sensor such as heart rate monitors, cycling speed & cadence sensors and power meters
  • Can be used to pull data from an ANT+ GPS watch, such as Garmin, into an iPhone App for easy upload to the web
  • Wireless?ANT+ ultra low power technology
  • Very low power usage; ?no internal battery
  • Compatible with iPhone 3G, 3GS, 4, 4S, iPod touch, iPad; fits into 30-pin connector
Compatible with popular iOS Apps: Endomondo; MapMyRun; Run Meter and Run keeper; Runtastic The Wahoo Key plugs into your iPhone
and adds ANT+ wireless connectivity
view larger. The Wahoo Key
view larger. The Wahoo Key for iPhone transforms your iPhone into an all-in-one training partner. It wirelessly connects your iPhone to popular ANT+ fitness sensors and allows you to collect and track all your fitness data like heart rate, speed, and cadence through your iPhone. Works With Popular Apps Monitor your fitness stats in real time through our free Wahoo Fitness App or any of our partner apps, such as Run/Cyclemeter, RunKeeper, MapMyRUN/RIDE, Runtastic, Endomondo, and more. For a complete list of compatible apps, visit www Read the full review here...

List Price: $ 59.99 Price: $ 55.16

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27 Responses to “Obesity before pregnancy linked to earliest preterm births, study finds”

  1. Mary Garcia Reply

    love it!!!!!

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  2. kopec82 Reply

    She is good but like the queen Zumba no no jeje was good work out but the
    one blue distracting jejeje

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  3. MasculineClam Reply

    they sound like sims talking. love her moves she’s so fast!!

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  4. TRÀ MY ĐINH LÂM Reply

    what’s the title of song, please??

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  5. SOFAL K Reply

    Listen “Zumba Sofalk” on Youtube and share it !

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  6. goustune Reply

    “Yeah, we have to laught to make this look like we are having fun !”

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  7. kenny pham Reply

    They are so beautiful and weet… amazing.

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  8. Renata Marcon Reply

    WOW! What a great surprise to find a brazilian song here. Love the class!
    Greetings from Brazil

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  9. Ana Mati Reply

    my favorite zik….!!!! love it

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  10. Summer Freebird Reply

    Good workout but why would anyone of any age or gender ever wear those kind
    of pants. I would even be embarrassed to get under my sheets alone without
    anyone seeing me with those. She should be proud of her workout curves and
    it would be more motivating to see if the workout actually gets you in
    shape but you can’t see anything with that outfit

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  11. MIREYA ANAYA Reply

    i like the sing CHERI ON Y VAS!!

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  12. Lacey Conrad Reply

    IDK what they’re saying but it was fun!

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  13. Thamyrys Zika Reply

    Is very good! :D

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  14. angéliuque pelletier Reply

    Super mitivant

    View Comment
  15. Doumia Abbad Reply

    j’adore <3

    View Comment
  16. Manoon Billottet Reply


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  17. PetshopDream LPS Reply

    J A D O R E !

    View Comment
  18. claudia ponin Reply

    Super g?nial

    View Comment
  19. epidemicfire07 Reply

    Aww man, wish it had English subtitles!

    View Comment
  20. Lucilene Santana Reply


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  21. Guween Garcia Reply

    waouhhhhh j’adore !!!

    View Comment
  22. Arko Day Reply

    Man, I have to shed weight, now. Do you know of Belly Busting Box? My
    friend has lost 30kg up to now with it and very highly endorses it.
    Recently I began and now have lost 5kg so far so I’m getting pretty
    inspired. Search Google for Belly Busting Box.

    View Comment
  23. Marcio Dantas Reply


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  24. AreliLaughs Reply

    So, I wasn’t going to try this because I was kinda embarrassed, BUT they
    were having so much that I HAD to try it! And this is a great work out….I
    started sweating right away, haha. I love it!

    View Comment
  25. maryline colombiianita ramirez Reply

    Pouff c bon jai FAI mon sport de la journner

    View Comment
  26. jelarv "jelv" Reply
    112 of 115 people found the following review helpful
    5.0 out of 5 stars
    Great Product, But iPhone Apps Still Have Way to Go, September 22, 2011
    jelarv “jelv” (Riverside, CT USA) –

    Verified Purchase(What’s this?)
    This review is from: Wahoo Fitness Key for iPod/iPhone (Sports)

    I’ve had my Wahoo key (iPhone chip) for about two weeks and really like it. Based on my initial research and subsequent use of the device, here are my thoughts for anyone looking to get it:

    * You’ll need an ANT+ heart rate strap because Polar (the industry standard for the past 20 years) doesn’t work with the device.
    * The key works with Wahoo, Digifit and a number of other apps. I read that Digifit’s key only works with their app, which to me was a big enough hurdle to justify paying an extra $25 for the Wahoo key.
    * When I plugged in the key to the iPhone, it didn’t recognize it at first but after playing around with the menu, it showed up.
    * It sucks up quite a bit of battery power. I do my workout first thing in the morning when my iPhone is fully charged and after an hour it’s only half charged. You can’t plug in a charger or external power (like Mophie) because the key goes into the power port.
    * Wahoo’s iPhone app is designed to monitor your heart rate for biking and running. If you’re like me and also want to track your heart rate when you do resistance/strength training (which is great if you want to measure how many calories you burned during your workout), you need to fool it by saying you’re biking or running.
    * I initially thought Wahoo’s app would let me review all of my historical data and look at my rides on a map, but I discovered it’s really just a data capturing app. You can see the basics one day at a time, but nothing elaborate.
    * So the power of Wahoo or Digifit (the whole purpose of getting either one) really comes in their ability to export to cloud-based apps that you can then review on a full-sized computer. Wahoo can export to 7 web-based apps, while Digifit can only export to one (TrainingPeaks). I tried to use all of the seven apps and this is what I found:

    * Runkeeper: Great app that works for biking or running (I’ve used it off and on for the past two years even before I knew about Wahoo or Digifit). It’s interesting that if you record your bike/run using Runkeeper’s iPhone app on its own (which can’t record your heart rate), the elevation and speed graphs appear more accurate than when using the Wahoo chip to record this information and then exporting to RunKeeper. Unfortunately, RunKeeper doesn’t offer much for recording resistance/strength training. With that said, I found it to be the best app among the seven.
    * TrainingPeaks: It’s good in that it lets you re-label the data from Wahoo (such as calling a “workout” just that rather than “biking” or “running”) and it has lots of options in terms of how to look at the data. The problem I found is that their elevation data is off by at least 200 feet (I ride next to sea level and it shows me being at 200 feet) and doesn’t match the topography of my ride (when I start my ride I go down a large hill but TrainingPeaks shows me going up a hill). After exchanging emails with their tech support, it appears this is something they don’t plan to address soon.
    * MapMyFitness (or MapMyRide): Categorizes all data imported from Wahoo as a “Run/jog” even if it’s a bike ride or resistance/strength training. Not very powerful in terms of charting or comparing your workouts over time.
    * Garmin Connect. It’s also designed around biking and running (no resistance/strength). The web pages aren’t as intuitive as RunKeeper but look cleaner than Training Peaks. Nothing really stands out about their site.
    * Strava: It’s more about biking than running (and has no mention of resistance/strength). I didn’t get to test their site because they insist on making your profile public to all members (or the less restrictive option is to make it available to the general public), which bothered me. If you go to “Athlete Search” you can find everyone who uses Strava.com in a given city/town, first and last name as well as their daily workouts, which I thought was a bit intrusive.
    * Nike+: Only tracks runs and since I don’t run, I couldn’t get it to show my data.
    * MapMyTracks: Wahoo let me set up an account with MapMytracks but then didn’t provide it as a place to forward my data.

    Overall, none of the apps met all of my needs, but I’m looking to track my resistance/strength training heart rate as well as biking. If you’re just looking for running or biking, there’s probably at least one that will meet your needs. Over time, someone will develop the whole package, where you can upload your data (speed, elevation, gps coordinates and heart rate) as well as manage things like the specific exercises you do for strength training (like iFitness or Finess HD for the iPad) and track nutrition (DailyBurn).

    *************** JANUARY 22, 2012 UPDATE ******************
    I recently bought Wahoo’s new Bluetooth heart rate chest strap that, as of today, only works with the iPhone 4S. This means you no longer need the Wahoo Key (dongle), which is nice…

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  27. J. Granquist "toy investor/speculator" Reply
    24 of 24 people found the following review helpful
    5.0 out of 5 stars
    Excellent way to transfer watch info onto i-devices & use monitors without displays., January 27, 2012

    Verified Purchase(What’s this?)
    This review is from: Wahoo Fitness Key for iPod/iPhone (Sports)
    I bought the Garmin 610 package & went back n forth on wether or not I needed this dongle. I mean, I have the world at my wrist for my HR monitor & my footpod, so why would I need this too?
    2 reasons:

    #1. When you are banging around weights or using the boxing bag, a watch isn’t so very handy & can be detrimental to your motions(as in, worrying that you might wack your watch). Have the iPad/iPod nearby, no worries! The dongle picks up your specific ANT+ sensors & records everything just like your watch would. I’ve done P90X routines while in the same room with my iPad and it picks up stuff just fine, almost 12 feet away at times.

    You wear your watch & HR monitor(maybe a footpod too) and go for a run or bike or walk or whatever workout. You come back home(or to the office, car, restaurant, etc) and you just want a quick upload of your workout to Garmin Connect or whatever else you might use(Training Peaks, Nike, etc). This dongle acts exactly like your ANT+ USB stick would on a regular computer, but to your i-device! Same info, less fuss. I went for a quick 4 mile run, and before my shower water had gotten warm enough to step into, I had my run & course & stats uploaded to GC & even shared on Facebook!

    I can’t recommend this dongle enough! It is compatible with more than 50 apps right now(the Garmin dongle is only compatible with 1 app….seriously….just one!!) I almost bought the Garmin branded one & I’m glad I didn’t. Well worth the cash for compatibility & convience. I haven’t used my actual computer to upload any workouts since day #2. Why??? This does the same thing.

    Only thing is won’t do is download updates to your device(but you can download courses or workouts or other user created content). So when there is a firmware update for your device, you will need to use the original ANT+ wireless USB stick. FYI.


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