Table 1—

Effect of supine position and wearing the corset on spirometric lung volumes in corset users and nonusers

SupineSeatedp-value#
No corsetCorsetPositionCorset
VC L
 Corset users2.56±0.672.13±0.712.41±0.69<0.0001<0.0001
 Nonusers2.83±0.862.83±0.870.86
 p-value0.12<0.0005
IC L
 Corset users2.32±0.581.79±0.512.11±0.58<0.0001<0.0001
 Nonusers2.49±0.752.23±0.71<0.0001
 p-value0.25<0.007
ERV L
 Corset users0.23±0.170.33±0.290.31±0.24<0.010.83
 Nonusers0.34±0.240.52±0.36<0.0001
 p-value<0.02<0.02
  • Data are presented as mean±sd unless otherwise indicated (n = 36 each for users and nonusers). The Friedman's repeated-measures analysis performed on corset users (supine, seated without corset and seated with corset) was significant for the three parameters. VC: vital capacity; IC: inspiratory capacity; ERV: expiratory residual volume. #: Wilcoxon test; : Mann–Whitney test (corset users versus nonusers).