Decline of FEV1 in scuba divers
| Autor: | Claus M. Muth, Sabine Schlegel, Andreas Koch, Jens Theysohn, Kay Tetzlaff, Caroline Stahl |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Pulmonary and Respiratory Medicine
Adult Male medicine.medical_specialty Longitudinal study medicine.medical_treatment Diving Critical Care and Intensive Care Medicine Pulmonary function testing Germany medicine Humans Lung volumes Longitudinal Studies Lung function business.industry respiratory tract diseases Scuba diving Case-Control Studies Physical therapy Smoking cessation Cardiology and Cardiovascular Medicine business Lung Volume Measurements human activities Body mass index Demography Cohort study |
| Zdroj: | Chest. 130(1) |
| ISSN: | 0012-3692 |
| Popis: | Study objectives Obstructive changes in lung function have been reported with cumulative scuba diving exposure. The aim of this study was to investigate the decline in FEV 1 in scuba divers over time. Design Prospective controlled cohort study. Setting German Naval Medical Institute. Patients Four hundred sixty-eight healthy, male, military scuba divers and 122 submariners (control subjects) were entered. Measurements and results Pulmonary function tests were performed in all subjects on at least three occasions with a minimum interval of 1 year between first and last measurement. The decline in FEV 1 was investigated fitting a general linear model to FEV 1 across time with a factorial main-effects model for slopes and intercepts with respect to the factors group, smoking status, and baseline FEV 1 . Mean baseline age of all subjects was 32 years (SD, 9.1), and mean body mass index was 24.7 kg/m 2 (SD, 2.4). Subjects were followed up for 5 years (range, 1 to 9 years) on average. Baseline FEV 1 exceeded the predicted values in both divers and nondiving control subjects. There was no significant difference in the decline of FEV 1 between divers and control subjects. Over time, FEV 1 declined more rapidly in smokers than in nonsmokers (p = 0.0064) and declined more rapidly also in subjects with a baseline FEV 1 above average compared to subjects below average (p 1 peaked in smoking divers who had a high FEV 1 at baseline. Conclusions The data indicate that scuba diving is not associated with an accelerated decline in FEV 1 . Combined exposure to diving and smoking contributes to the fall of FEV 1 ; therefore, smoking cessation is advised for divers. |
| Databáze: | OpenAIRE |
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