1. Relationships between body composition and pulmonary function in a community-dwelling population in Japan
- Author
-
Junichi Yokoyama, Yutaro Kudo, Yoshihisa Katsuragi, Arata Akaike, Manabu Totsuka, Shigeyuki Nakaji, Hiroyasu Shimizu, Daisuke Suzuki, Yuki Soma, and Ryosuke Kawabata
- Subjects
Male ,Pulmonology ,Physiology ,Vital Capacity ,Pulmonary Function ,Body fat percentage ,Biochemistry ,Pulmonary function testing ,Body Mass Index ,Waist–hip ratio ,Japan ,Immune Physiology ,Medicine and Health Sciences ,Musculoskeletal System ,Immune Response ,Glucose Tolerance ,Aged, 80 and over ,education.field_of_study ,Innate Immune System ,Multidisciplinary ,Muscles ,Middle Aged ,Adipose Tissue ,Physiological Parameters ,Connective Tissue ,Body Composition ,Medicine ,Cytokines ,Female ,Anatomy ,Waist Circumference ,Research Article ,Adult ,Waist ,Science ,Population ,Immunology ,Intra-Abdominal Fat ,FEV1/FVC ratio ,Young Adult ,Signs and Symptoms ,medicine ,Humans ,Obesity ,education ,Muscle, Skeletal ,Aged ,Inflammation ,business.industry ,Interleukin-6 ,Waist-Hip Ratio ,Body Weight ,Biology and Life Sciences ,Molecular Development ,medicine.disease ,Biological Tissue ,Metabolism ,Cross-Sectional Studies ,Skeletal Muscles ,Immune System ,Clinical Medicine ,Insulin Resistance ,business ,Body mass index ,Developmental Biology - Abstract
Pulmonary diseases, including chronic obstructive pulmonary disease (COPD), are major chronic diseases that result in decreased pulmonary function. Relationships between body composition and pulmonary function have been reported. However, few epidemiological studies have used the visceral fat area (VFA) to measure body composition. This study aimed to examine the relationship between body composition and pulmonary function. A cross-sectional study was conducted between 2015 and 2016, using data obtained from 1,287 residents aged between 19 and 91 years living in the Iwaki area of Hirosaki City, a rural region in Aomori Prefecture, Japan. Pulmonary function was evaluated using the forced vital capacity (FVC) as a percentage of the predicted value (predicted FVC%) and the ratio of forced expiratory volume in one second (FEV1) to FVC. The measurements for evaluating body composition included the body fat percentage (BFP) of the whole body and trunk, skeletal muscle index (SMI), body mass index (BMI), VFA, waist circumference (WC) at the navel level, and waist-to-hip ratio (WHR). To adjust for potential confounders, Spearman’s partial correlation analysis was used to examine the relationship between the measurements of body composition and pulmonary function. There were significant correlations between the predicted FVC% and the following parameters: BFP (whole body and trunk) in younger males; SMI in older males; WC, VFA, BMI, and SMI in younger females; and BFP (whole body and trunk) and VFA in older females. Contrastingly, WC and VFA in younger males and WC in younger females were correlated with the FEV1/FVC ratio. VFA was correlated with the FEV1/FVC ratio in younger males and predicted FVC% in older females. These findings suggest that visceral fat accumulation may increase the development of obstructive pulmonary disease in young males and accelerate the decline of pulmonary function (predicted FVC%) in older females.
- Published
- 2020