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Epidemiol Health > Volume 43; 2021 > Article
Epidemiology and Health 2021;43: e2021047-0.
DOI: https://doi.org/10.4178/epih.e2021047    Published online Aug 3, 2021.
Obesity parameters in relation to lung function levels in a large Chinese rural adult population
Xiang Zeng1,2  , Dongling Liu3  , Zhen An1  , Huijun Li1  , Jie Song1  , Weidong Wu1 
1School of Public Health, Xinxiang Medical University, Xinxiang, China
2Laboratory of Environmental Medicine and Developmental Toxicology, Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, China
3Henan Key Laboratory of Medical Tissue Regeneration, Xinxiang Medical University, Xinxiang, China
Correspondence  Xiang Zeng ,Tel: +8615738670189, Email: zengxiang3044@163.com
Weidong Wu ,Email: wdwu2013@126.com
Received: May 10, 2021  Accepted after revision: Aug 3, 2021
Abstract
OBJECTIVES:
The association between obesity parameters and lung function indicators in the general Chinese rural adult population remains unclear.
METHODS:
In total, 8,284 Chinese adults aged 20 years to 80 years old from Xinxiang were recruited. Obesity-related parameters, including body mass index (BMI), waist circumference (WC), hip circumference (HC), waist-to-hip ratio (WHR), waistto-height ratio (WHtR), body fat percentage (BFP), basal metabolism, and visceral fat index, and lung function parameters such as forced vital capacity and forced expiratory volume in first second were measured.
RESULTS:
The total prevalence of obesity defined by BMI, WC, WHR, WHtR, and BFP was 23.2%, 58.2%, 66.7%, 69.2%, and 56.5%, respectively. Spearman correlation analyses showed significant correlations between all obesity-related parameters and lung function. Linear regression analyses further demonstrated that BMI, WHtR, BFP, and general obesity defined using those indicators were negatively associated with lung function, while WC, WHR, and central obesity defined accordingly were positively associated with lung function. The relationship between general obesity and lung function was more evident in women than in men, while the link between central obesity and lung function was more obvious in men than in women.
CONCLUSIONS:
Obesity is closely related to lung function in the general Chinese adult population. Weight control and loss are important strategies to improve lung function and respiratory health.
Keywords: Obesity, Body fat distribution, Overweight, Pulmonary function, Rural area, Chinese
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