The aim of the study is to evaluate the effect of plyometric training versus strengthening exercise on quadriceps and hamstring muscles and quality of life and selective motor control of lower limb of children with hemiplegia.

The aim of the study is to evaluate the effect of plyometric training versus strengthening exercise on quadriceps and hamstring muscles and quality of life and selective motor control of lower limb of children with hemiplegia.

Hand-Held dynamometer is used to assess the muscle strength of quadriceps and hamstring Selective control assessment of lower extremity scale is used to assess selective motor control of lower limb.

Peds Ql scale is used to assess quality of life of the children. The methods of assessment are valid and reliable.

Inclusion Criteria:

• Their age will be ranging from 8 to 10 years.
• They will be on level (1 : 1+) according to Modified Ashworth scale
• They will be on level I according to Gross Motor Functional Classification System
• They can understand and follow instructions.

Exclusion Criteria:

• Child undergoes orthopedic surgery past one year.
• Visual or auditory problems that interfere with rehabilitation programs.
• Botox injection past 6 months.
• Cardiac problems or uncontrolled seizures.

children with hemiplegic cp aged from 8 - 10 years.