2007, Piran, Slovenia

Cerebral deoxy-Hb (delta, µM)
Cerebral t-Hb (delta, µM)
Muscle deoxy-Hb (delta, µM)
Muscle t-Hb (delta, µM)
A
15
10
5
0
-5
-10
B
20
15
10
5
0
-5
-10
A
20
15
10
5
0
-5
-10
B
20
15
10
5
0
IHE
0 20 40 60 80 100
Exercise Intensity (VO2peak)
IHE
.
*
*
*
*
Placebo
0 20 40 60 80 100
Exercise Intensity (VO2peak)
Placebo
-5
0 20 40 60 80 100 0 20 40 60 80 100
. .
Exercise Intensity (% VO2peak) Exercise Intensity (% VO2peak)
Altitude Physiology
Relative to baseline, heavy exercise following IHE resulted in an increased cerebral
deoxy-Hb (P = 0.02) (Figure 2A) and oxy-Hb (P = 0.03, data not shown), and a
lowered TOI (P = 0.04, data not shown), with no change in t-Hb (Figure 2B).
Cerebral oxygenation was similar between baseline and post-intervention exercise
tests in the placebo group.
.
Figure 2. Changes in
cerebral deoxy-Hb and t-
Hb during incremental
exercise at baseline
(closed circles) and 2-days
post intervention (open
circles). * difference from
baseline (P < 0.05).
Values are mean (SD).
Figure 3. Changes in
muscle deoxy-Hb and t-
Hb during incremental
exercise at baseline
(closed circles) and 2-days
post intervention (open
circles). * difference from
baseline (P < 0.05).
Values are mean (SD).
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