Cerebral palsy (CP) is defined as a non-progressive lesion of the developing foetal or infant brain and causes variety of motor, sensory and cognitive impairments. Hemiplegic CP is the most common type of CP in term infants, involving one half of the body. In these individuals, muscle tone is reduced, and there is an inability to perform quality upper extremity movements due to increased muscle tone, increased reflexes, weakness in antagonist muscles. Due to spasticity upper extremity is present in shoulder adduction and internal rotation, elbow flexion and pronation, wrist and fingers flexed and thumb in palm position. Spontaneous movements of the upper extremity are decreased and abnormal. These individuals have a reduced upper extremity function ranging from mild incompetence to almost no use of the hand.

Constraint-Induced Movement Therapy (CIMT) is designed to improve the function of the most affected limb by restricting the use of the less affected limb in individuals with unilateral upper extremity involvement and implementing an intensive motor learning-based training program. In pediatric subjects, modified CIMT (mCIMT), which is called a 'child-friendly technique', has been applied, which shows some differences from the form of CIMT in adults. In mCIMT, the restriction time was reduced, activities with the child were performed within a play frame, in the environment in which the child was accustomed, and restriction methods such as gloves, splint, sling were used. In the literature CIMT has been used mainly in children with hemiplegic CP in the pediatric population. However, there are many studies in the literature evaluating the efficacy of mCIMT in individuals with hemiplegic CP and showing beneficial effects on upper extremity speed and skills, and the duration of application restriction varies considerably.

The aim of the investigator's study was to determine the effect of consecutive or intermittent implementation of mCIMT on upper extremity function in children with hemiplegic CP. Thus, it will be determined whether the modification of the duration of administration in the pediatric population varies in treatment results.

33 children with spastic hemiplegia age between 5-18 years will participate study. Children's gross motor skills classified with Gross Motor Classification Sysytem (GMFCS) and hand abilities classified with Manual Ability Classification System (MACS). The children divided into 3 groups, consecutive mCIMT group, intermittent mCIMT group, and traditional physiotherapy control group. The consecutive mCIMT group received mCIMT treatment for 10 consecutive days in addition to the conventional physiotherapy sessions. A sling used to restrict the noninvolved upper extremity. The unaffected upper extremities of the children restricted for 6 hours and activities performed by using shaping techniques under the guidance of same therapist. Within the remaining period, the family implemented the activities with his/her child that are determined by the therapist using the motor learning principles, appropriate to the age of the child and that he / she likes to do. The assessments performed for all three groups before, 10 days after and 5 weeks after treatment.

Inclusion Criteria:

• confirmed diagnosis of hemiplegic CP
• 5-18 years of age
• MACS level I, II or III
• GMFCS level I
• To have sufficient communication skills
• To be able to extend the wrist at least 20 degrees
• Lack of severe spasticity to prevent grasping and dropping objects
• Surgery or application of Botulinum toxin within the last 6 months
• The family's acceptance of the child's participation in the study
• The child volunteers to participate in the study

Exclusion Criteria:

• Visual and hearing impairment
• Family refuses to participate in the study
• There is a walking and balance problem that may cause a fall risk during the use of a sling
• Behavioral problems at the level to reject the practices to be performed within the study