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Aerobic exercise before diving reduces venous gas bubble formation in humans (CROSBI ID 106141)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Dujić, Željko ; Duplančić, Darko ; Marinović-Terzić, Ivana ; Baković, Darija ; Ivančev, Vladimir ; Valić, Zoran ; Eterović, Davor ; Petri, Nadan M. ; Wisloff, Urlik ; Brubakk Alf, O. Aerobic exercise before diving reduces venous gas bubble formation in humans // Journal of physiology, 555 (2004), 3; 637-642-x

Podaci o odgovornosti

Dujić, Željko ; Duplančić, Darko ; Marinović-Terzić, Ivana ; Baković, Darija ; Ivančev, Vladimir ; Valić, Zoran ; Eterović, Davor ; Petri, Nadan M. ; Wisloff, Urlik ; Brubakk Alf, O.

engleski

Aerobic exercise before diving reduces venous gas bubble formation in humans

We have previously shown in a rat model that a single bout of high intensity aerobic exercise 20 hours before a simulated dive reduces bubble formation and after dive protects from lethal decompression sickness. The present study investigates the importance of these findings in man. Twelve healthy, male divers were compressed in a hyperbaric chamber to 280 kPa at a rate of 100 kPa · ; min-1 breathing air, remaining at pressure for 80 minutes. The ascent rate was 9 m · ; min-1 with a seven minutes stop at 130 kPa. Each diver underwent two randomly assigned simulated dives, with and without preceding exercise. A single interval exercise performed 24 hours before the dive consisted of treadmill running at 90% of maximum heart rate for three minutes followed by exercise at 50% of maximum heart rate for two minutes ; this was repeated eight times for a total exercise period of 40 minutes. Venous gas bubbles were monitored with an ultrasonic scanner every 20 minutes for 80 minutes after reaching surface pressure. The study demonstrated that a single bout of strenuous exercise 24 hours before a dive to 18 meters of seawater significantly reduced the average number of bubbles in the pulmonary artery from 0.98 to 0.22 bubbles/cm2 (p = 0.006) compared to dives without preceding exercise. The maximum bubble grade decreased from 3 to 1.5 (p = 0.002) by pre-dive exercise, thereby increasing safety. This is the first report to indicate that pre dive exercise may form the basis for a novel approach to prevent serious decompression sickness.

decompression sickness; echocardiography; aerobic exercise

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Podaci o izdanju

555 (3)

2004.

637-642-x

objavljeno

0022-3751

Povezanost rada

Kliničke medicinske znanosti

Indeksiranost