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Weight gain and longitudinal changes in lung function in steel workers

M L Wang1, L McCabe, E L Petsonk

  • 1Section of Pulmonary and Critical Care Medicine, West Virginia University School of Medicine, Morgantown 26506-9166, USA.

Chest
|June 1, 1997
PubMed
Summary

Weight gain accelerates lung function decline in steelworkers, alongside smoking. This study highlights weight management as crucial for respiratory health in occupational settings.

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Area of Science:

  • Occupational Health
  • Pulmonary Medicine
  • Epidemiology

Background:

  • Steelworkers face occupational exposures and lifestyle factors that may impact lung function.
  • Longitudinal studies are essential to understand the progression of lung function decline in this cohort.

Purpose of the Study:

  • To assess the associations between dust exposure, smoking habits, demographic factors, and longitudinal changes in lung function among male steelworkers.
  • To determine the impact of weight change on lung function decline.

Main Methods:

  • A cohort of 541 male steelworkers with at least two spirometry tests between 1982 and 1991 were analyzed.
  • Simple linear regression determined annual changes in FVC, FEV1, FEV1/FVC ratio, and body weight.
  • Matched pair analysis compared rapid vs. slow lung function decliners.

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Main Results:

  • The cohort experienced an average decline of 44 mL/yr in FEV1 and 50 mL/yr in FVC.
  • Current smokers showed a faster decline in lung function compared to ex-smokers and nonsmokers.
  • Increasing body weight was highly correlated with accelerated decline in lung function (p<0.0001).

Conclusions:

  • Weight gain is a significant independent factor associated with the longitudinal decline of FVC, FEV1, and FEV1/FVC ratio in steelworkers.
  • Both cigarette smoking and weight gain contribute to accelerated lung function decline.
  • Interventions targeting weight management may be beneficial for preserving lung function in this occupational group.