Table 2.

Characteristics of the included studies.

Intervention groups
	Study	Patients (diagnosis, N analysed, age, gender)	Treatment	Control	Outcome measures	Results
1	Ibrahim et al[18]	Spastic Diplegia, 30 children; 9.93 years.	Conventional Therapy + WBV	Conventional Therapy	Knee extensor strength Walking Speed Walking Balance GMFM	Knee extensor strength, Walking Speed and GMFM (E) was significantly increase only WBV group
2	El-Shamy et al[19]	Spastic Diplegia, 30 children; 9.93 years; 76,6% male.	Conventional Therapy + WBV	Conventional Therapy	Knee extensor strength Balance and postural stability	Increase the gains in muscle strength and balance
3	Lee & Chon20	Cerebral Palsy, 30 children; 10 years; 50% male.	Conventional Therapy + WBV	Conventional Therapy	Gross motor function Leg muscle thickness Three-dimensional gait analyses	Improve mobility in children with cerebral palsy Positive effect on the leg muscles
4	El-Shamay et al[21]	Spastic Diplegia; 30 children; 10-13 years; GMFCS = I, II.	Conventional Therapy + WBV	Conventional Therapy	Bone densitometry Anthropometry	Improvements in Bone densitometry
5	Ruck et al[22]	Cerebral Palsy, 20 children 18 analysed, 6.2 to 12.3 years, 70% male; GMFCS = II-IV.	Conventional Therapy + WBV	Conventional Therapy	Walking ability Gross motor function Bone densitometry	Improve mobility function Without detect a positive treatment effect on bone
6	Wren et al[23]	Cerebral Palsy; 36 children; 9.4 years; 42% male; GMFCS = I-IV.	WBV	Stand up without WBV	Bone densitometry and Muscle strength	Did not result from increases in muscle mass or strength. No effect was seen on bone

GMFM=Gross motor function; GMFCS= Gross Motor Function Classification System.