The impact of obesity on pulmonary function in adult women

The impact of obesity on pulmonary function in adult women

Author Costa, Dirceu Google Scholar
Barbalho, Marcela Cangussu Google Scholar
Miguel, Gustavo Peixoto Soares Autor UNIFESP Google Scholar
Forti, Eli Maria Pazzianotto Google Scholar
Azevedo, João Luiz Moreira Coutinho Autor UNIFESP Google Scholar
Institution Universidade Metodista de Piracicaba
Hospital Meridional de Cariacica
Universidade Federal de São Paulo (UNIFESP)
Abstract INTRODUCTION: Obesity can cause deleterious effects on respiratory function and impair health and quality of life. OBJECTIVE: To evaluate the effects of obesity on the pulmonary function of adult women. METHODS: An obese group, constituted of 20 women between 20 and 35 years old with a BMI of 35 - 49.99 kg/m² who were non-smokers and sedentary and had no lung disease were recruited. The non-obese group consisted of 20 women between 20 and 35 years old who were sedentary and non-smokers and had no lung disease and a body mass index between 18.5 and 24.99 kg/m². Spirometry was performed in all subjects. The statistical analysis consisted of parametric or non-parametric tests, depending on the distribution of each variable, considering p < 0.05 to be statistically significant. RESULTS: The obese group presented a mean age of 25.85 ± 3.89 years and a mean BMI of 41.1 ± 3.46 kg/m², and the non-obese group presented a mean age of 23.9 ± 2.97 years and a mean body mass index of 21.91 ± 1.81 kg/m². There were no significant differences between the obese group and the non-obese group as to the age, vital capacity, tidal volume, forced vital capacity, and forced expiratory volume in one second. However, the obese group presented a greater inspiratory reserve volume (2.44 ± 0.47 L vs. 1.87 ± 0.42 L), a lower expiratory reserve volume (0.52 ± 0.32 L vs. 1.15 ± 0.32 L), and a maximal voluntary ventilation (108.5 ± 13.3 L/min vs. 122.6 ± 19.8 L/min) than the non-obese group, respectively. CONCLUSION: The alterations evidenced in the components of the vital capacity (inspiratory reserve volume and expiratory reserve volume) suggest damage to the chest mechanics caused by obesity. These factors probably contributed to a reduction of the maximal voluntary ventilation.
Keywords Body Mass Index
Chest Mechanics
Pulmonary Volumes
Maximal Voluntary Ventilation
Language English
Date 2008-01-01
Published in Clinics. Faculdade de Medicina / USP, v. 63, n. 6, p. 719-724, 2008.
ISSN 1807-5932 (Sherpa/Romeo, impact factor)
Publisher Faculdade de Medicina / USP
Extent 719-724
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000261418600001
SciELO ID S1807-59322008000600002 (statistics in SciELO)

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