[QUOTE]Originally posted by tomUK
[B]Thanks for the reply Ric.
After a long, cold, miserable winter where I have only been maintaining this workout is the begining of Interval work. Obviously I will increase time as the weeks roll on. My real question is in reference to the high-low limit. I was wondering if hitting 83% then dropping to 78% was a good method to do intervals.
[/quote]
it depends what you're trying to achieve. what i was alluding to in my previous post, is that this intensity is a fairly low effort, and you should be able to sustain for a fair period of time. If you can't you may need to re evaluate your HR max. The lower end of the scale is endurance work, and the upper end is what i refer to as tempo, and as such is considerably below TT effort.
Quoted post said:
I understand you prescribe intervals based on power, however, I personally find HR to be a better gauge for *me*. If I base intervals on a power zone I can find on somedays that I am pushing myself too hard, where as I find HR gives me a better understanding of how my body is responding. As the weeks progress I look at my HR to power relationship and ensure that I am making progress - i.e I am producing a higher power for a given HR.
Thanks. [/B]
If by maintaining a specific zone (be it power or HR prescribed) is harder on some days than others then either 1) you're not training correctly, i.e., you don't have days that are easy enough for you, or 2) sometimes needed -- in a block of training, as you become progressively more fatigued a given intensity will feel harder than when you're fresh. this is sometimes warranted in training
In all honesty it doesn't overly matter what you're HR to power ratio is unless you *always* train in exactly the same environmental and topographical conditions. With changes in environmental and topography your HR will respond differently at the same power, along with other factors affecting it.
Additionally, if you've tested yourself with power and set up your zones using different power meters there may be a problem as not all meters are as accurate as others. (i seem to recall this is what you've previously said, but i may have mixed you up with someone else on this board, in which sorry about that).
ric