Produção Nacional
Revisado por pares
Chronic adaptations of lung function in breath-hold diving fishermen
2014; Nofer Institute of Occupational Medicine; Volume: 27; Issue: 2 Linguagem: Inglês
10.2478/s13382-014-0259-7
ISSN1896-494X
AutoresCristiane Diniz, Tiago Farias, Mayane Pereira, Caio Breno Reis Pires, Luciana Soares Lages Gonçalves, Patrícia Chaves Coertjens, Marcelo Coertjens,
Tópico(s)Spaceflight effects on biology
ResumoThe aim of this study was to verify and analyze the existence of chronic adaptations of lung function in free-diving fishermen whose occupation is artisanal fishing.This was a cross-sectional study involving 11 breath-hold diving fishermen and 10 non-breath-hold diving fishermen (control) from the village of Bitupitá in the municipality of Barroquinha (Ceará - Brazil). Anthropometric measurements, chest and abdominal circumferences as well as spirometric and respiratory muscle strength tests were conducted according to the specifications of the American Thoracic Society/European Respiratory Society (ATS/ERS). In order to compare the measured values versus the predicted values, Student t test was used in the case of parametric test and Wilcoxon test in the case of nonparametric test. To compare the inter-group means Student t test was used for parametric test and Mann-Whitney test for the nonparametric one. The level of significance was set at α = 5%.The forced vital capacity (FVC) (4.9 ± 0.6 l vs. 4.3 ± 0.4 l) and forced expiratory volume in 1 s (FEV1) (4.0 ± 0.5 l vs. 3.6 ± 0.3 l) were, respectively, higher in the group of divers compared to the control group (p ≤ 0.05). Furthermore, in the group of free divers, the measured FVC, FEV1 and FEV1/FVC ratios were significantly greater than the predicted ones. No differences were found between the measured respiratory pressures.These results indicate that breath-hold diving seems to produce chronic adaptations of the respiratory system, resulting in elevated lung volumes with no airway obstruction.
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