Uhlig, Florian and Muth, Claus-Martin and Tetzlaff, Kay and Koch, Andreas and Leberle, Richard and Georgieff, Michael and Winkler, Bernd E. (2014) Lung function after cold-water dives with a standard scuba regulator or full-face-mask during wintertime. DIVING AND HYPERBARIC MEDICINE, 44 (2). pp. 70-73. ISSN 1833-3516,
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Introduction: Full-face-masks (FFM) prevent the diver's face from cold and can support nasal breathing underwater. The aim of the study was to evaluate the effect of the use of FFMs on lung function and wellbeing. Methods: Twenty-one, healthy, non-asthmatic divers performed two cold-water dives (4 degrees C, 25 min, 10 metres' depth)-one with a FFM and the other with a standard scuba regulator (SSR). Spirometry was performed before and after each dive and well-being and cold sensation were assessed after the dives. Results: Significant decreases in forced vital capacity (FVC), forced expiratory volume in one second (FEV1) and mid-expiratory flow at 75% of FVC (MEF75) occurred after both FFM and SSR dives. Changes in FVC and FEV1 did not differ significantly between FFM and SSR dives. However, the mid-expiratory flows measured at 50% and 25% of FVC (MEF50 and MEF25) were significantly lower 10 minutes after the FFM dive compared to 10 minutes after the SSR dive. The well-being and cold sensation of the divers were significantly improved with FFM dives compared to SSR dives. Conclusions: Cold-water dives during wintertime can be associated with airway narrowing. During cold-water dives, the use of a FFM appears to reduce the cold sensation and enhance the well-being of the divers. However, a FFM does not appear to prevent airway narrowing in healthy, non-asthmatic subjects.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | EXERCISE-INDUCED BRONCHOCONSTRICTION; PULMONARY-FUNCTION; CHILDREN; METERS; AIR; Cold; scuba diving; lung function; physiology; diving reflex; thermal problems (hypothermia and hyperthermia) |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Anästhesiologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Oct 2019 10:05 |
| Last Modified: | 28 Oct 2019 10:05 |
| URI: | https://pred.uni-regensburg.de/id/eprint/10096 |
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