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Seasonal changes in lung function in a farming population.

A Senthilselvan1, J A Dosman, K M Semchuk

  • 1Centre for Agricultural Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada. sentil@ualberta.ca

Canadian Respiratory Journal
|September 12, 2000
PubMed
Summary

Seasonal respiratory health changes were observed in a rural population. Farm residents experienced declines in lung function, unlike town residents, suggesting environmental exposures may play a role.

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Area of Science:

  • Environmental Health
  • Pulmonology
  • Rural Health

Background:

  • Respiratory health can fluctuate seasonally.
  • Rural populations may face unique environmental and occupational exposures.

Purpose of the Study:

  • To assess seasonal variations in respiratory health.
  • To investigate differences between town and farm residents in a rural setting.

Main Methods:

  • Longitudinal, population-based study in southwestern Saskatchewan.
  • 200 adult participants assessed in winter and summer.
  • Pulmonary function measured via spirometry; questionnaires collected exposure data.

Main Results:

  • Maximal midexpiratory flow rate improved for town residents, declined for farm residents.

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  • Forced expiratory volume in 1s/forced vital capacity improved for non-farming town residents.
  • Declines observed in farming town residents and all farm residents.

    • Conclusions:

    • Pulmonary function shows seasonal changes in this rural population.
    • Observed changes may be linked to environmental or occupational exposures.