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Lung function and physical performance in farmers with and without post-COVID-19: a comparative study.

Patchareeya Amput1,2, Arunrat Srithawong1, Saisunee Konsanit1

  • 1Department of Physical Therapy, School of Allied Health Sciences, University of Phayao, Phayao, Thailand.

Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
|January 28, 2026
PubMed
Summary

Farmers with post-COVID-19 experienced reduced lung function and physical performance compared to those without. Regular exercise and lower limb endurance positively impact respiratory health post-COVID-19.

Keywords:
Agriculturelung functionmuscle endurancemuscle strengthpost-COVID-19

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Area of Science:

  • Pulmonology
  • Occupational Health
  • Infectious Disease Research

Background:

  • COVID-19 can lead to persistent respiratory and physical impairments.
  • Farmers represent a population potentially at higher risk due to occupational exposures.

Purpose of the Study:

  • To compare lung function and physical performance in farmers with and without a history of post-COVID-19.
  • To investigate correlations between lung function, physical capacity, and participant characteristics.

Main Methods:

  • Spirometry, handgrip strength, and the 1-min sit to stand test (1STS) were used to assess lung function and physical capacity.
  • Eighty-four farmers were divided into post-COVID-19 and control groups.

Main Results:

  • Farmers with post-COVID-19 exhibited significantly lower FEV1% predicted, handgrip strength, and 1STS performance.
  • Exercise behavior correlated positively with FVC% predicted and PEFR% predicted.
  • 1STS performance was associated with PEFR% predicted.

Conclusions:

  • Post-COVID-19 is associated with persistent deficits in lung function and physical performance among farmers.
  • Maintaining exercise behavior and lower limb endurance is crucial for respiratory health recovery after COVID-19.