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Pulmonary functions in air conditioner users.

Farah Khaliq1, Sameer Sharma, O P Tandon

  • 1Department of Physiology, University College of Medical Sciences & GTB Hospital, Delhi 110 095.

Indian Journal of Physiology and Pharmacology
|July 21, 2006
PubMed
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Using car air conditioning (AC) daily may negatively impact lung function in young males. Studies show reduced peak expiratory flow rate and airflow, suggesting a predisposition to respiratory issues.

Area of Science:

  • Environmental Health
  • Pulmonary Medicine
  • Occupational Health

Background:

  • Air conditioning (AC) significantly impacts the environment and potentially human health beyond temperature regulation.
  • Previous research has not fully explored the specific effects of AC use on respiratory functions.

Purpose of the Study:

  • To investigate the impact of car air conditioner usage on pulmonary functions in young, healthy, non-smoking males.
  • To compare lung function parameters between individuals who regularly use car AC and a control group who do not.

Main Methods:

  • A study group of ten young, healthy, non-smoking males using car AC for at least 1 hour daily for six months was selected.
  • A control group of ten similar individuals who did not use car AC was also included.

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  • Pulmonary functions, including peak expiratory flow rate (PEFR) and forced expiratory flow between 25-75% of vital capacity (FEF25-75), were measured using a PK Morgan 232 spirometer.

    • Main Results:

    • Subjects using car AC showed significantly reduced PEFR and FEF25-75.
    • A trend towards decreased inspiratory flow rates was observed in AC users, though not statistically significant.
    • Forced expiratory volume in 0.5 seconds (FEV 0.5 sec) was also decreased in AC users, indicating mild airflow limitation.

    Conclusions:

    • Regular car air conditioner use in young males is associated with measurable reductions in key pulmonary function parameters.
    • The observed mild airflow restriction suggests a potential predisposition to respiratory disorders among AC users.
    • Further research is warranted to understand the long-term respiratory health implications of prolonged AC exposure.