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BMC Pulm Med. 2012 Mar 21;12:10. doi: 10.1186/1471-2466-12-10.

The effect of obesity on spirometry tests among healthy non-smoking adults.

Author information

  • Department of Medicine, College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, P.O. Box 90068 11321, Saudi Arabia. alanezi@hotmail.com

Abstract

INTRODUCTION:

The effects of obesity on pulmonary functions have not been addressed previously among Saudi population. We aim to study the effects of obesity on spirometry tests among healthy non-smoking adults.

METHODS:

A cross sectional study conducted among volunteers healthy non-smoking adults Subjects. We divided the subjects into two groups according to their BMI. The first group consisted of non-obese subjects with BMI of 18 to 24.9 kg/m2 and the second group consisted of obese subjects with BMI of 30 kg/m2 and above. Subjects underwent spirometry tests according to American thoracic society standards with measurement of the following values: the forced vital capacity (FVC), forced expiratory volume in one second (FEV1), peak expiratory flow rate (PEF) and forced mid-expiratory flow (FEF25-75).

RESULTS:

The total subjects were 294 with a mean age of 32 years. There were 178 males and 116 females subjects. We found no significant differences in FEV1 (p value = 0.686), FVC (p value = 0.733), FEV1/FVC Ratio (p value = 0.197) and FEF25-75 (p value = 0.693) between the obese and non-obese subjects. However, there was significantly difference in PEF between the two groups (p value < 0.020).

CONCLUSION:

Obesity does not have effect on the spirometry tests (except PEF) among health non-smoking adults. We recommend searching for alternative diagnosis in case of findings abnormal spirometry tests results among obese subjects.

PMID:
22436173
[PubMed - indexed for MEDLINE]
PMCID:
PMC3337807
Free PMC Article
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