Obesity Surgery

, Volume 20, Issue 5, pp 589–594 | Cite as

The Impact of Various Anthropometric Measurements of Obesity on Pulmonary Function in Candidates for Surgery

  • Yu-Feng Wei
  • Huey-Dong Wu
  • Chi-Yang Chang
  • Chih-Kun Huang
  • Chi-Ming Tai
  • Chao-Ming Hung
  • Wei-Kung Tseng
  • Chau-Chung Wu
Clinical Research



Obesity has proven to be associated with respiratory symptoms and impaired pulmonary function, which could increase the incidence of postoperative complications after bariatric surgery. However, the component of obesity that has the most influence on pulmonary function has not been identified, especially in Asian-Pacific populations.


This cross-sectional study enrolled obese Chinese patients ≥18 years of age with a body mass index (BMI) >32 kg/m2, who were being evaluated for bariatric surgery. All patients performed pulmonary function test, and the results were analyzed according to various anthropometric measurements. Multiple-regression analyses were also conducted and adjusted for age, sex, and smoking history to determine the factors that impaired the pulmonary function of the obese patients.


A total of 150 consecutive patients were enrolled from July 2007 to August 2008. We found that body weight, BMI, waist circumference (WC), hip circumference, and waist-to-height ratio but not waist-to-hip ratio had a significant correlation with decreased forced vital capacity (FVC), forced expiratory volume in the first second (FEV1), total lung capacity (TLC), vital capacity (VC), and increased diffusing capacity of the lung for carbon monoxide to alveolar gas volume. After multiple linear regression analysis, only WC was associated with reductions in FEV1, FVC, TLC, and VC.


Obesity is associated with a restrictive pattern of impaired pulmonary function in various anthropometric parameters measured in obese Chinese adults in Taiwan. Among these parameters, WC had the greatest impact on pulmonary function, which could also implicate the rate of postoperative complication and the need of more intensive care after bariatric surgery.


Body mass index Obesity Pulmonary function test Waist circumference 



American Thoracic Society


Body mass index


Body weight


Diffusing capacity of the lung for carbon monoxide


DLCO to alveolar gas volume


Expiratory reserve volume


Forced expiratory volume in the first second


Forced vital capacity


Hip circumference


Inspiratory capacity


Pulmonary function test


Residual volume


Total lung capacity


Vital capacity


Waist circumference


Waist-to-hip ratio


Waist-to-height ratio



None of the contributing authors have any conflicts of interest to disclose.


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Copyright information

© Springer Science + Business Media, LLC 2009

Authors and Affiliations

  • Yu-Feng Wei
    • 1
  • Huey-Dong Wu
    • 3
  • Chi-Yang Chang
    • 1
  • Chih-Kun Huang
    • 2
  • Chi-Ming Tai
    • 1
  • Chao-Ming Hung
    • 2
  • Wei-Kung Tseng
    • 1
  • Chau-Chung Wu
    • 3
  1. 1.Department of Internal Medicine, E-Da HospitalI-Shou UniversityKaohsiung CountyTaiwan
  2. 2.Department of Surgery, E-Da HospitalI-Shou UniversityKaohsiung CountyTaiwan
  3. 3.Department of Internal MedicineNational Taiwan University HospitalTaipeiTaiwan

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