Abstract:

 Objective    To explore the effects of body composition on pulmonary function in female adults in Jinan area. Methods     Pulmonary functions，  including forced expiratory volume in one second (FEV 1.0), forced vital capacity (FVC), FEV 1.0/FVC and peak expiratory flow (PEF) and body composition, including body fat percent (BF%)， fat mass index (FMI) and fat free mass index (FFMI), were examined in 657 normal female adults selected by cluster sampling from 20 communities of Jinan area. Age range was 25~75 years old. The subjects were stratified by the age, BF% (normal, 15≤BF%＜25%; overweight, 25%≤BF%＜30%; obesity, BF%≥30%) and quartiles of FMI andFFMI (both were represented by Q1,Q2,Q3 and Q4). The differences among the groups with same stratified variable and correlations between body composition and pulmonary function were determined byANOVA, t-test and partial correlation. Results       FEV1.0, FVC, PEF and FEV1.0/FVC decreased with the increase of BF% from normal to obesity (all p＜0.05), but, there was no significant difference for FEV1.0/FVC between the overweight and obesity groups (p＞0.05); Differences of FVC, FEV1.0 and PEF between each two groups of FMI-quartile were significant, and these parameters decreased with the increase of FMI which were Q1＞Q2＞Q3＞Q4(all p＜0.05); The comparisons of FEV1.0/FVC among different FMI-quartile groups were Q4＜Q1, Q4＜Q2, Q3＜Q1 (all p＜0.05); After the age and height were adjusted， significant correlations were found between FEV1.0， FVC， PEF， FEV1.0/FVC and BF%， FMI,  respectively (all p＜0.05) ; No significant differences between FEV1.0，FVC，FEV1.0/FVC and PEF were found among the FFMI-quartile groups (all p＞0.05). Conclusion       Increased BF% and FM may lead to the obstructive impairment of the pulmonary function to a certain degree， while FFM doesn′t show obvious effect on the pulmonary function in female adults in Jinan area.

Key words: Body fat percent； Fat mass index； Fat free mass index； Pulmonary function； Female adults