In females, FVC and the lung volume parameters were negatively
associated with all the DXA-derived variables of adiposity
(table 3). The FEV1/FVC ratio was only associated with
abdominal fat. The correlations were numerically of similar
magnitude, indicating a comparable effect of adiposity on
respiratory function irrespective of the variable used to assess
body fat distribution. The strongest correlations were with FRC.
A similar pattern of outcomes was found in males. Overall, FVC
and the lung volume parameters (excluding residual volume)
were found to have a significant negative association with each
of the DXA-derived variables. In contrast with females, there
was a significant positive association between the FEV1/FVC
ratio and the majority of DXA variables (table 4)