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Contralateral effect of unilateral motor priming on grasping in children with unilateral spastic cerebral palsy

Introduction. Cross-training, as a type of unilateral movement-based priming, could enhance the affected side depending on strengthening of the non-affected side. it was aimed to investigate the effect of unilateral movement-based priming on handgrip strength and fine motor developmental outcomes of the affected upper extremity in children with unilateral spastic cerebral palsy. Methods. overall, 32 patients participated in this study; they were randomly classified into 2 groups. Group A subjects engaged in a selected occupational therapy program based on fine motor development, while those in group B received exercises to increase contralateral hand strength followed by application of the same program as group A. The treatment programs were conducted 3 times per week for 10 successive weeks. The outcomes included affected handgrip strength as a primary outcome and age equivalent for grasping in the Peabody developmental Motor Scale – Fine Motor (PdMS-FM). These measures were recorded before and after the application of the allocated interventions. Results. There were statistically significant differences when comparing pre- and post-treatment mean values in each group. Also, there was a significant difference in favour of the study group when comparing post-treatment mean values ( p < 0.05). Conclusions. Unilateral motor priming through cross-training is effective in improving grasping outcomes of the affected upper extremity concerning strength and fine motor development in children with unilateral spastic cerebral palsy.