HR double-poling

I have observed something odd. When I do an easy run or bike, my HR
gets up into zone 1 target range in the first minute and a half or so.
When I do an easy d/p rollerski, my HR goes up to around 130 & stays
there for the first 6-8 minutes, gradually increasing to target range
of 142-145 with (I think) no change in effort / cadence on my part.
And on workouts of 45-60 min+ it seems to drift higher as it goes on.
This doesn't happen with any aerobic activity except double-poling. I
have heard of "cardiac drift" but never noticed it even on runs of 3+
hrs.

Explain.... Could this be related to differences in upper/lower body
muscle composition or other physiological differences? Or am I just
going harder without being aware of it? Has anyone else noticed this?

cheers
Derick

I suggest you purchase "The Triathlete's Training Bible", by Joe Friel
(Velopress, 1998).
Here's a quote from page 49:
"Heart rate is but one window through which we can peek into the exercising
body. Relying on it to the exclusion of all other measures of intensity can
be as detrimental to your training as not having any gauge of effort at
all."

and of course Joe Friel gives other measures of intensity, and also
describes how to combine multiple exercise motions into an overall training
program. (My suggestion is to replace his Swim / Bike / Run with Poling /
Skating / Classic)

Ken

Hi Ken
thanks. I'm not sure why you suggest I am "relying on [HR] to the
exclusion of all other measures of intensity" though. The question was
why there should be a disjunct between perceived exertion, perceived
force applied to the poles and cadence on the one hand, and HR on the
other, & why this should occur d/ping but not in other activities.
DF

Ken Roberts wrote:
I suggest you purchase "The Triathlete's Training Bible", by Joe Friel
(Velopress, 1998).
Here's a quote from page 49:
"Heart rate is but one window through which we can peek into the exercising
body. Relying on it to the exclusion of all other measures of intensity can
be as detrimental to your training as not having any gauge of effort at
all."

and of course Joe Friel gives other measures of intensity, and also
describes how to combine multiple exercise motions into an overall training
program. (My suggestion is to replace his Swim / Bike / Run with Poling /
Skating / Classic)

Ken

Short muscles carrying the bulk of the load do fatigue with time, and
your HR will show it. If out for enough time, it's normal for HR to
drift up and then down. Happens in races. If you are not getting any
drift, perhaps your aerobic workouts are not aerobic enough. Coaches
talk about a basic endurance range that is the upper 5-10 beats of level
1 as providing the most benefit. A lactate test might be in order.

RM


"Derick Fay" wrote:

Hi Ken
thanks. I'm not sure why you suggest I am "relying on [HR] to the
exclusion of all other measures of intensity" though. The question was
why there should be a disjunct between perceived exertion, perceived
force applied to the poles and cadence on the one hand, and HR on the
other, & why this should occur d/ping but not in other activities.
DF

Ken Roberts wrote:
I suggest you purchase "The Triathlete's Training Bible", by Joe Friel
(Velopress, 1998).
Here's a quote from page 49:
"Heart rate is but one window through which we can peek into the exercising
body. Relying on it to the exclusion of all other measures of intensity can
be as detrimental to your training as not having any gauge of effort at
all."

and of course Joe Friel gives other measures of intensity, and also
describes how to combine multiple exercise motions into an overall training
program. (My suggestion is to replace his Swim / Bike / Run with Poling /
Skating / Classic)

Ken