[Purpose] We attempted to determine whether differences of respiratory function could be
found in terms of truncal expansion, respiratory muscle strength, and pulmonary function
test (PFT) between children with spastic diplegic and hemiplegic cerebral palsy. [Subjects
and Methods] We recruited 19 children with spastic diplegic CP (diplegic-CP group) and 10
children with spastic hemiplegic CP (hemiplegic-CP group). For all the children, clinical
factors associated with respiratory functions were assessed in terms of truncal expansion
(chest and waist expansion), respiratory muscle strength (maximal inspiration and
expiration pressures: MIP and MEP), and pulmonary function test (FVC, FEV1, and
FEV1/FVC). [Results] Overall, the diplegic-CP group showed lower truncal
circumference, respiratory muscle strength, and pulmonary function values than the
hemiplegic-CP group. However, in the comparison of the two groups significant differences
were only found in waist expansion, MIP, MEP, FVC, and FEV1. [Conclusion] The
results of this study indicate that children with diplegic CP have much poorer waist
expansion, weaker respiratory muscle, and lower pulmonary function values. These findings
will provide valuable information for use in the clinical assessment and treatment of
children with spastic CP.