BREATH-HOLD DIVING Workshop Proceedings - Divers Alert Network
BREATH-HOLD DIVING Workshop Proceedings - Divers Alert Network
BREATH-HOLD DIVING Workshop Proceedings - Divers Alert Network
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Table 1. Differences between divers (n=10) and controls (n=10) on<br />
demographic, apnea, and cognitive variables<br />
Parameter Group Range Mean SD F (df =18) p<br />
Age (y)<br />
<strong>Divers</strong> 24-53 36.7 11.4 1.176 ns<br />
Controls 21-53 31.6 9.5<br />
Education<br />
<strong>Divers</strong> 12-16 14.5 1.4 3.45 ns<br />
Controls 13-18 15.7 1.4<br />
NNE 1<br />
<strong>Divers</strong> 0-20 4.2 5.8 6.33 0.02<br />
Controls 0-2 0.2 0.4<br />
Years of BH activity <strong>Divers</strong> 4-20 9.8 5.8 28.09 0.000<br />
Controls 0 - -<br />
BH time (s)<br />
<strong>Divers</strong> 182-301 246 44 39.8 0.000<br />
Controls 83-197 129 39<br />
S a O 2 (min %)<br />
<strong>Divers</strong> 50-82 67 10 28.12 0.000<br />
Controls 75-94 86 5<br />
Heart Rate (beats·min -1 ) <strong>Divers</strong> 23-49 41 8 0.772 ns<br />
Controls 25-68 45 11<br />
SDMT baseline<br />
<strong>Divers</strong> 45-70 53.7 7.2 0.006 ns<br />
Controls 34-80 53.3 13.9<br />
SDMT post-breath-hold 5 <strong>Divers</strong> 42-65 52.5 7.1 0.276 ns<br />
Controls 42-74 54.6 10.5<br />
Picture memory/4 baseline <strong>Divers</strong> 4 4 0 - ns<br />
Controls 4 4 0<br />
Picture memory /4 postbreath-hold<br />
<strong>Divers</strong> 2-4 3.7 0.67 2.8 ns<br />
5<br />
Controls 4 4 0<br />
Reaction time - milliseconds <strong>Divers</strong> 474-639 530 47 1.30 ns<br />
at baseline<br />
Controls 459-662 556 54<br />
Reaction time - milliseconds<br />
post-breath-hold 5<br />
<strong>Divers</strong><br />
Controls<br />
505-597<br />
481-597<br />
546<br />
545<br />
31<br />
39<br />
.004 ns<br />
1 NNE includes previous concussion, head injury, diving related blackouts and 'sambas'<br />
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