[ParrotHead]

So we finally purchased a treadmill and I've been good about using it. I'm now up to a daily 50-60 workout. Now I've read all the stuff about working the heart at 60-80% for maximum weight loss. To add variety to my workout, I'll also use the "Sprint-8" program - which is a 20 minute workout with 30 second sprints and 90 second jogs.

Typically, I'll use the Sprint-8 for 20 minutes, and then follow that with 30-40 minutes trying to keep my heart rate up in the 75% range.

Question: Would I burn more fat, or loose weight faster, if I did several "Sprint-8's" in a row, or simply did 60 minutes at the 75% of my max heart rate?

Thanks,
-PH