3 Fat Chicks on a Diet Weight Loss Community  

Go Back   3 Fat Chicks on a Diet Weight Loss Community > Fitness > Exercise!

Exercise! Love it or hate it, let's motivate each other to just DO IT!

Heart rate and exercise

Reply
 
Thread Tools
Old 08-12-2005, 09:34 AM   #1
Member
 
silversparkle's Avatar
 
Join Date: Jul 2005
Location: Indiana
Posts: 75

S/C/G: 257/164/140

Height: 5' 6

Default Heart rate and exercise

I have noticed that many of the cardio machines have the ability to give you your heart rate as you are working out. Some of these machines also have a chart showing the different zones that your heart rate can fall into. I'm a little confused about a couple of the zones...the Fat Burning and Cardio. What is the difference between these two? I want to burn fat of course but I thought thats what cardio was?!?! Can anyone explain this? Tanks a bunch!!!
__________________
silversparkle is offline   Reply With Quote
Old 08-12-2005, 10:27 AM   #2
Senior Member
 
JuliaTN's Avatar
 
Join Date: Jun 2005
Location: Chattanooga, TN
Posts: 363

Height: 5'4"

Default

There may be someone who actually knows the answer to this - I have wondered about it a great deal myself. From what I can figure out, the theory is that lowish intensity for a long period is better for burning fat. After a certain time (I think about 20-25 minutes) the body burns up all of its muscle-stored glycogen and starts to burn fat. The lower intensity is not enough to give your cardio system a real workout to the point that you will acquire more endurance. At a higher intensity it *does* thus the "cardio training zone." Supposedly when you are in the cardio zone you could be burning up muscle instead of fat.

Part of me thinks all of this is a big load of bollocks. Calories in vs calories out should be the gold standard for burning fat and obviously if your heart rate is higher you are expending more energy thus burning more calories. The other part of me thinks there must be something to it or all of those exercise equip companies wouldn't be printing it on their products.
JuliaTN is offline   Reply With Quote
Old 08-12-2005, 12:45 PM   #3
Meg
Senior Member
 
Meg's Avatar
 
Join Date: Sep 1999
Posts: 9,160

S/C/G: 257/135/maintaining

Height: 5' 4"

Default

Trust your instincts, Julia -- it's a crock. There isn't any such thing as a 'fat-burning zone' or 'cardio zone'. My personal training textbook had an entire section of the cardio chapter called The Myth Of The Fat Burning Zone. In a nutshell, yes, you indeed burn a higher percent of calories from fat at lower intensities and a higher percent from carbs at higher intensities ...

BUT!!!

You burn the highest percent of calories from fat when you're totally at rest (like in bed) -- a higher percent of almost ZERO calories, that is! Heck of a workout, eh?

The bottom line is - just as you suspected - the total number of calories burned is the number that matters. Who cares about burning 75% of your calories from fat if you're only burning a few calories?? Big deal! Go for high intensity cardio to maximize the TOTAL number of calories burned from ALL sources.

Weight loss boils down to calories in verus calories out and we want to maximize the calories OUT -- that way we don't have to starve ourselves to create a calorie deficit. So forget the zones on the machines and - by the way - you gotta ignore the calorie readouts from the machines too -- they're usually way too high.
__________________
Meg
Start: 257 - June 1, 2001
Goal: 135 - May 12, 2002
Size 22/size 4
Meg is offline   Reply With Quote
Old 08-12-2005, 01:01 PM   #4
Working My Way Back Down
 
WaterRat's Avatar
 
Join Date: Aug 2004
Location: Alaska
Posts: 4,982

Default

And frankly, I don't trust the heart rate either. I can switch machines and get widely divergent readings. . . Mostly I use it to monitor my cool down, treating the numbers as relative to each other rather than my actual heart rate.
__________________
Pat

"Promise me you'll always remember: You're braver than you believe, and stronger than you seem, and smarter than you think." Christopher Robin to Pooh
WaterRat is offline   Reply With Quote
Reply
Posts by members, moderators and admins are not considered medical advice
and no guarantee is made against accuracy.


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


All times are GMT -4. The time now is 02:14 AM.






Powered by vBulletin® Version 3.6.7
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.3.2