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Fabiana Paula Almeida Martins,1,2 Thaís Massetti,3 Tania Brusque Crocetta,1 Priscila Bianchi Lopes,4 Amanda Abreu da Silva,2 Eliketylen Fernandes Figueiredo,2 Luiz Carlos de Abreu,1 Talita Dias da Silva,5 Carlos Bandeira de Mello Monteiro3 1Study Design and Scientific Writing Laboratory, ABC Medical School (FMABC), Santo André, São Paulo, Brazil; 2Research Laboratory, Northern Union of Education (UniNorte), Barão do Rio Branco Faculty, Rio Branco, Acre, Brazil; 3Postgraduate Program in Rehabilitation Sciences, Faculty of Medicine, University of São Paulo, São Paulo, São Paulo, Brazil; 4Federal University of São Paulo, São Paulo, São Paulo, Brazil; 5Department of Medicine, School of Arts, Sciences and Humanities, University of São Paulo, São Paulo, São Paulo, Brazil Purpose: To evaluate the performance improvement of individuals with hemiparesis cerebral palsy (CP) using a virtual task. Participants and methods: Twenty individuals were selected and distributed into two groups. The experimental group (CP group) comprised ten individuals with a medical diagnosis of CP, and ten individuals with typical development (sex- and age-matched) composed the control group (TD group). Both groups followed the same intervention protocol, which included a virtual coincident timing task: the participants performed upper limb movements in front of a computer’s webcam and interacted with the task with the aim of virtually intercepting spheres that fell in four rows following the rhythm of a pre-selected song during an 8-minute period. To verify the influence on a real task, pre- and posttests were performed in a similar task, but with physical contact (using the spacebar on the keyboard of a computer). To analyze the data, we evaluated the variable, constant, and absolute errors during the task and in the pre- and posttests. Results: The results showed that there was an improvement in performance between the pre- and posttests; that is, after practicing the task in an environment without physical contact, there was a performance improvement in posttests in the real task, but only for the CP group. Moreover, there were significant differences in precision and accuracy between the two groups, with worse performance in the CP group. Conclusion: Individuals with CP presented better performance in the real task after practice in a virtual reality task, albeit with worse performance compared with individuals with TD. This is an interesting result that supports the possible use of virtual tasks for the rehabilitation of individuals with CP. Keywords: cerebral palsy, motor performance, virtual reality, motor disability, spastic cerebral palsy

Carlos BM Monteiro,1 Geert JP Savelsbergh,2 Ana RP Smorenburg,3 Zodja Graciani,4 Camila Torriani-Pasin,5 Luiz Carlos de Abreu,6 Vitor E Valenti,7 Fernando Kok41School of Arts, Sciences and Humanities, University of São Paulo, São Paulo, Brazil; 2MOVE Research Institute Amsterdam, Faculty of Human Movement Sciences, VU University, Amsterdam, the Netherlands; 3Burke-Cornell Medical Research Institute, White Plains, NY, USA; 4Department of Neurology, University of São Paulo, São Paulo, Brazil; 5Motor Behavior Laboratory, University of São Paulo, São Paulo, Brazil; 6Laboratory of Scientific Writing, Department of Morphology and Physiology, School of Medicine of ABC, Santo Andre, Brazil; 7Department of Speech Language and Hearing Therapy, Faculty of Philosophy and Sciences, UNESP, Marilia, BrazilAbstract: We aimed to evaluate the functional abilities of persons with Rett syndrome (RTT) in stages III and IV. The group consisted of 60 females who had been diagnosed with RTT: 38 in stage III, mean age (years) of 9.14, with a standard deviation of 5.84 (minimum 2.2/maximum 26.4); and 22 in stage IV, mean age of 12.45, with a standard deviation of 6.17 (minimum 5.3/maximum 26.9). The evaluation was made using the Pediatric ­Evaluation of Disability Inventory, which has 197 items in the areas of self-care, mobility, and social function. The results showed that in the area of self-care, stage III and stage IV RTT persons had a level of 24.12 and 18.36 (P=0.002), respectively. In the area of mobility, stage III had 37.22 and stage IV had 14.64 (P