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EricT · 10-07-2007, 11:10 AM

I would have asked that trainer what is his definition of working out "hard". That could mean a lot of different things from super high volume stuff to the point of fatigue or super high intensity low volume to the point of failure. Just learn to ignore anything that general and subjective. It's like when people tell you to "just go and lift heavy weights". Worthless advice unless you define what you mean by heavy. I can lift something at 60% intensity and if I'm fatigued enough it will feel heavy.

For the workout it could be effective for you. But I'd recommend a full-body routine with relatively low volume and compound exercises. That will allow the highest intensity and will therefore have a big effect on post exercise metabolism.

The thing about walking versus running has to do with the PERCENTAGE of calories burned as fat. Walking, or lower intensity exercise will burn a greater percentage of fat calories than higher intensties like running. Although all energy systems will be used to different extents at any one time. BUT a higher percentage of a lower amount of calories does not always mean MORE fat burned. It's a trick of math. Running burns more calories and even though the percentage of those that are fat decreases it can still be MORE fat overall.

One thing is certain. Running will have a more long-lasting effect
AFTERWARDS. It will increase oxygen consumption for a longer time and thus overall fat buring during the day.

Walking may be a good choice for you but don't think it is automatically burning more fat. Right now as you read this you are buring a higher percentage of fat calories. So if you want to "burn more fat" according to that trainer's defintion just set in front of the TV or read a book. That should be enough to let you see what I'm talking about here...