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HIIT training and pregnancy?

Posts: 9585
4/26/07 12:27 P

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The thing I'd caution against is you reaching a point where your body is overheating. As long as you hydrate well, feel good with the level of exercise, and avoid letting your body overheat I think you can continue with your workouts.

Do use caution and err on the side of taking is easier versus pushing to your limit. If you are pregnant you don't want to be pushing your body past of the point of fatique, so start cutting back on your intensity if you notice a change in how you feel.

A HR of 195 is really quite high for a distance run, so I would take down your intensity to a level where you can carry on a conversation (the intensity test we use during pregnancy) while exercising.

Check out the Babyfit resource center fitness section for lots of information on how to keep your exercise level safe during pregnancy.
Hope you find out good news soon!


Catherine is the co-author of "Exercising Through Your Pregnancy" with Dr. James Clapp, and author of Fit Pregnancy For Dummies, published by Wiley Publishing in 2004. To learn more about these books or buy them online you can find them on

Cathy also provides Prenatal & Postpartum Fitness Information and certification courses to Healthcare Professionals. Click here to learn more.

Posts: 30
4/26/07 11:29 A

I *think* I might be pregnant and have not seen a doctor yet. Is it ok to continue High Intensity Interval Training during pregnancy?

I have been an exerciser for about 8 years, a runner for a year, and started doing HIIT twice a week about 9 months ago.

Usually I sprint as hard as I can (prob only a 7-8 min mile) for 45 seconds, and then walk at 4.0 mph for 1 min 15 seconds. I keep repeating this for 20 minutes. I do this twice a week, and then run 3 miles twice a week. I also do upper body weights and a strenous yoga class once a week. I also walk during my lunch when the weather is nice and do a lower body pilates dvd twice a week.

My heart rate when working out is very high naturally. Even when I just take a 30 min walk on my lunch walking a 15 min mile, my heart rate is already 180. When I run a 10 min mile, it's up to 195 or so.

Help, I want to continue my routine until I see the doctor, but I don't want to do anything unsafe.

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