A randomized controlled trial aimed to evaluate the additional effect loaded gait training to conventional physical therapy program on gross motor function and the knee extensors strength in children with bilateral spastic cerebral palsy. Children were divided randomly into two equal groups. The control group received a conventional physical therapy program, while the intervention group received the same program plus loaded gait training. Gross motor functions and knee extensor strength were measured.

A randomized controlled trial aimed to evaluate the additional effect loaded gait training to conventional physical therapy program on gross motor function and the knee extensors strength in children with bilateral spastic cerebral palsy (CP).

52 children with bilateral spastic CP, aged 5 to 7 years, were divided randomly into two equal groups. The control group received a conventional physical therapy program, while the intervention group received the same program plus loaded gait training 3 times per week for an hour for 3 months.

Gross motor functions were measured by the Gross Motor Function Measure Scale-88 (GMFM-88); standing and walking domains, while knee extensor strength was measured by a hand-held dynamometer.

Inclusion Criteria:

• Age: five to seven years old, classified as levels II and III on the GMFCS.
• Spasticity grade from 1+ to 2 based on the Modified Ashworth scale.
• Able to understand and follow verbal commands and instructions (with a score above 80 on the Stanford Binet Intelligence Scale).

Exclusion Criteria:

• Genetic or metabolic disorders.
• Brain tumours.
• Musculoskeletal dysfunction that would interfere with our intervention (e.g. tightness of the posterior knee joint capsule that causes passive knee extension lag, or fixed contracture of the knee joint).
• Surgical intervention in the lower limbs within the preceding 12 months.
• Botulinum toxin injections in lower limb muscles within the last six months.

Double blinding. Parents were also blinded.