2007, Piran, Slovenia

Environmental Ergonomics XII
Igor B. Mekjavic, Stelios N. Kounalakis & Nigel A.S. Taylor (Eds.), © BIOMED, Ljubljana 2007
Mean arterial pressure (mmHg)
350
120
110
100
90
80
BHT (sec)
ΔSBP
(mmHg)
ΔDBP
(mmHg)
ΔTPR
(MU)
BHT (sec)
ΔSBP
(mmHg)
ΔDBP
(mmHg)
ΔTPR
(MU)
RESTBH1 REC
1
BH 2 REC
2
BH 3 REC
3
BH 4 REC
4
BH 5 REC
5
Apean- Recovery
BH 6 REC
6
A C A L
BH 7 REC
7
BH 8 REC
8
Figure 3. Mean arterial pressure before, during and after 8 apneas (BH)
without (AC) and with heating lamp (AL). Values are means ± SE from 7
subjects. REC: recovery between efforts; no significant difference conditions,
p>0.05
Table 1: Mean values (± SE) of 7 subjects under apnea in breath hold time (BHT), systolic
(SBP), diastolic (DBP) blood pressure and total peripheral resistance (TPR). SBP, DBP and
TPR were expressed as absolute change from control.
BH 1 BH 2 BH 3 BH 2 BH 3 BH 4 BH 5 BH 6 BH 7 BH 8
75.5
±10.2
15
± 4
12
± 2
0.30
± 0.04
73.6
± 7.3
12
± 2
12
± 3
0.30
± 0.08
86.1
± 9.2
14
± 2
10
± 1
0.38
± 0.04
102.6
± 9.8
10
± 2
13
± 1
0.43
± 0.06
84.0
± 7.6
11
± 2
10
± 1
0.35
± 0.05
101.9
± 8.3
10
± 3
11
± 2
0.37
± 0.08
Apnea without hand heating
92.7
± 8.5
104.5*
± 9.1
100.9*
± 8.5
11 12 7
± 12 ± 2 ± 5
10 11 10
± 1 ± 1 ± 2
0.37 0.35 0.33
± 0.07 ± 0.06 ± 0.05
Apnea with hand heating
101.8
± 13.3
10.0
± 1
11
± 2
0.40
± 0.07
* significant changes from BH 1, p