The purpose of this study was to determine if adults with spastic diplegic cerebral palsy (CP) display midline crossing inhibition (MCI) in the lower extremity as measured by choice reaction time (CRT) and movement time (MT) as compared to participants without disabilities. Midline crossing ability was assessed in the standing position using a protocol developed by Eason and Surburg (1993). Both groups were significantly slower in the contralateral direction as compared to the ipsilateral and midline direction as measured by CRT. Results revealed that adults with CP were significantly slower in CRT and MT tasks as compared to participants without disabilities. Assessment of midline crossing ability may provide useful information related to assessment and subsequent treatment as individuals with CP age.
Colleen A. Lewis is with the Motor Control Laboratory, Division of Kinesiology at the University of Michigan in Ann Arbor, MI 48109. E-mail: email@example.com. Paul R. Surburg is with the Department of Kinesiology at Indiana University in Bloomington, IN 47405.