On Tue, 27 Jul 2004 21:21:37 +0100, David Bertenshaw
<[email hidden]> wrote (more or less):
Quoted message said:Martin 'MSeries' Newstead said:As the other replies said, eat low fat food, the diet books say less than 4%
fat is good. A HRM is useful at the start to show you what your heart is
doing but IMHO you soon learn what your body is doing and don't need it. A
Training with a HRM book will show you the zones in which your body uses
different source of fuel for the effort. One of the sources is fat so the
goal is to ride within your fat burning zone and of course your HRM will
tell you this. You may be surprised, you do not need to ride hard and get
totally knackered to get some benefit.
This is what I had read in a HRM book too, but I have also seen long and
apparently learned articles and threads which say (summarised as far as
I understand them...) that the 'fat burning zones' idea does not quite
tell the full story. (It doesn't contradict what you're saying about the
benefits to be gained of even low intensity exercise, just the concept
of 'fat burning zones'😉.
As far as I understand it (and please correct me if you know better...)
* exercising in the zone burns more fat as a percentage of the fuel
sources being used; BUT
* exercising at higher rates burns more calories in total and it is the
number of calories used (not the source of the calories) which really
counts in weight loss.
Fresh from my insufficiently pedantic attempt to set up u.r.c.pedants
<pedant.
ITWYM is is that when exercising at a higher rate, calories are burnt
at a higher rate.
The key difference is that total calories burnt = time spent
exercising x how hard you exercise.
So you'd burn the same calories if you sprint 100 yards as hard as you
can, or walk it.
The difference would be how long it took to cover the hundred yards
and so burn the <however many> calories.
The practical difference this makes is that to burn the most calories,
you want to out for as long as you have time for, and go as fast* as
you can manage to go without burning out before your time is up.
(And this doesn't mean find the biggest hill to freewheel down :-)
Instead of 'fast' here, I /really/ mean do the hardest work you can.
In fact, for fat-burning, feel free to just keep going up and up and
up and up the steepest hill you can find. Even if your trip computer
doesn't give you whizzy top speeds, it'll be concentrated hard work)
</pedant>
--
Cheers,
Euan
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