I conducted some of the forewarned experiment on breathing vs.
heart rate. I didn't see entirely the results I was expecting, but
may have learned something else much more interesting.
I first jogged for about 5 minutes, stretched, and then chatted some
with club members who were arriving then. As a result, my heart rate
was only about 75 (+- 10 -- standing and walking around casually shows
a very variable rate) as I walked up to the 'line'.
HR Lap Time Total Time
80 1:27 1:27
86 2:07 3:33 (I was off on my starting/stopping these two laps, the
1:47 average is correct for pacing)
77 1:45 5:19
65 1:47 7:06
148 1:43 8:49
134 1:44 10:43 Began forced deep 5/4 breathing
129 1:50 12:23
152 1:43 14:06
146 1:49 15:56 Free Breathing (shallow, unsynchronized)
152 1:46 17:42 Began forced deep 4/3 breathing
136 1:47 19:29
153 1:45 21:15
-- lost track of breathing experiment here, but while running I was
keeping an eye on the HRM and from here on, and heart rate was fairly
independant of breathing pattern from here on. Pretty solid at 154 +- 2
(73% HRR, +- 1.3%).
But what the heck is going on in those first 8 minutes? (rate
didn't break 100 until shortly before I clocked it at 8:49 into the
run) I do understand that the HRMs are slow to respond, but thought
the time scale of 'slow' was about 2 minutes. In this case, not
only did my pulse not rise from the 'walking around to the starting
line' value, it actually dropped significantly(?) (it'd be significant
if we trusted the HRM).
What phenomenology do others see in HRMs as far as time to
start registering higher than starting line pulses? Does anyone
else see lower than starting line values? If I'm having a real
drop, does it mean anything beyond 'you're strange'?
Robert Grumbine http://www.radix.net/~bobg/ Science faqs and amateur activities notes and links.
Sagredo (Galileo Galilei) "You present these recondite matters with too much
evidence and ease; this great facility makes them less appreciated than they
would be had they been presented in a more abstruse manner." Two New Sciences