Re: Heart Rates and Lactate Threshhold

On Jun 30, 12:18 pm, Justin Lewis <sendmesomemores...@xxxxxxx> wrote:
I am aware of the concept of LT or AT. Some claim it can be found
using the Conconni protocol. Others use lactate measurements.

Out of these sorts of tests one receives advice - this is the heart
rate you can maintain for about 1 hour (it can be expressed in terms
of wattage, I believe). The test was accurate for me: I had as an
average heartbeat the LT heartbeat for 72 minutes.

Question: if one is riding longer events (50 miles, 100 miles etc),
what heartbeat can be maintained for periods of 2 hours or 3 or 4
hours? Are they expressed as percantages of the LT heartbeat?

Justin! How ya doing? What kind of bike are you riding?

Anyway, the heart rate you observe is a response to physiological
demands for cardiac output. Overall cardiac output = HR X stroke
volume, so you can see that HR is only a part of the equation.
Nonetheless, the sustainable HR over a 2 or 4 hour period will be
close to the LT HR, subject to HR drift.

Given that HR is a response variable, it's not the ideal way to pace
effort.

.

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