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Lung function and functional exercise capacity in underground semi-precious stone mineworkers.
- Source :
- Work; 2020, Vol. 66 Issue 1, p193-200, 8p, 4 Charts, 1 Graph
- Publication Year :
- 2020
-
Abstract
- BACKGROUND: Semi-precious stone mining may cause occupational lung disease. The impact of inhaling silica on workers' exercise capacity has only been partially studied. OBJECTIVES: To study lung function, exercise capacity, and identify factors associated with functional impairment. METHODS: In a cross-sectional study of 193 current miners from Ametista do Sul, Rio Grande do Sul, Brazil, medical and occupational data were collected. The diagnosis of silicosis was established by the history of dust exposure and chest radiographic findings. All workers performed a spirometry and a 6-minute walk test (6MWT). RESULTS: Of the sample 51 (26.4%) had silicosis. Time working in mine was 14.7±8.7 years. Spirometry showed a normal, restrictive or obstructive ventilatory pattern in 75.1 %, 13 % and 9.3 % of the workers, respectively. The diagnosis of silicosis and length of time working in mining negatively affected lung function, although exercise capacity was preserved. In the multivariate analysis, time working in mining, diagnosis of silicosis and education remained significant for forced expiratory volume in one second (FEV<subscript>1</subscript>; r = 0.60; r<superscript>2</superscript> = 0.36; p < 0.001) and age and height for distance in 6MWT (r = 0.66; r<superscript>2</superscript> = 0.43; p < 0.001). CONCLUSIONS: Our results show impaired lung function and preserved exercise capacity in current mineworkers exposed to silica. Length of time working in mining, presence of silicosis and lower education were factors associated with reduced lung function. [ABSTRACT FROM AUTHOR]
- Subjects :
- LUNG physiology
AGE distribution
BODY weight
CHEST X rays
CHI-squared test
CONFIDENCE intervals
STATISTICAL correlation
INTERVIEWING
DUST diseases
MARITAL status
MEDICAL records
MINERAL industries
MULTIVARIATE analysis
QUESTIONNAIRES
RACE
PULMONARY function tests
SMOKING
SPIROMETRY
STATISTICS
STATURE
T-test (Statistics)
OCCUPATIONAL hazards
DATA analysis
ENVIRONMENTAL exposure
EDUCATIONAL attainment
BODY mass index
CROSS-sectional method
DATA analysis software
FUNCTIONAL assessment
DESCRIPTIVE statistics
EXERCISE tolerance
ACQUISITION of data methodology
MANN Whitney U Test
FORCED expiratory volume
Subjects
Details
- Language :
- English
- ISSN :
- 10519815
- Volume :
- 66
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Work
- Publication Type :
- Academic Journal
- Accession number :
- 143829250
- Full Text :
- https://doi.org/10.3233/WOR-203163