Down syndrome also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. It is usually associated with physical growth delays, mild to moderate intellectual disability, and characteristic facial features. There is no cure for Down syndrome. Education and proper care have been shown to improve quality of life. Some children with Down syndrome are educated in typical school classes, while others require more specialized education. Those with Down syndrome nearly always have physical and intellectual disabilities. They also typically have poor immune function and generally reach developmental milestones at a later age. They have an increased risk of a number of other health problems, including congenital heart defect, epilepsy, leukemia, thyroid diseases, and mental disorders. This study will determine effects of weight bearing exercises with and without Jaffery's core stability exercise training on dynamic balance and trunk muscles strength in children with Down syndrome. Randomized controlled study will be conducted in which data will be collected from children with down syndrome with calculated sample size of 18 which will randomly assigned into group A and group B. Group A would receive weight bearing exercises (I.e.

standing on preferred foot, standing with close eyes, walking forward on a line using normal stride and heel to toe gait, stepping over response speed stick on balance beam ).Group B would receive weight bearing exercises along with the jaffrey's core stability exercises (I.e.

contracting muscles, sitting on Swiss ball, Bridging, Squatting side lying bridge etc.).Frequency will be 5 sessions per week, of 1 hour and duration is of 5 months. Balance and trunk muscle strength will be pre assessed using pediatric balance scale and trunk control measurement scale respectively. The improvement will be measured with same tools. Data will be analyzed through SPSS 25.

Inclusion Criteria:

• Children with medical diagnosis of DS
• Age ranging from 4 to 10 year
• Both male and female genders
• Children who was able to stand and walk.

Exclusion Criteria:

• Any orthopedic limitation to exercise such as hip, knee, foot or spinal deformity.
• Children with planned orthopedic surgery in 6 months.
• Children with significantly impaired cognition.
• Children with hearing impairment