Effect of whole-body vibration on muscle strength and balance in diplegic cerebral palsy: a randomized controlled trial.
Am J Phys Med Rehabil. 2014 Feb;93(2):114-21
El-Shamy SM

Abstract

OBJECTIVE:
The purpose of this study was to investigate the effects of whole-body vibration training on muscle strength and balance in children with diplegic cerebral palsy.

DESIGN:
Fifteen children were assigned to the experimental group, which received whole-body vibration training (9 mins per day, 5 days per week). Another 15 were assigned to the control group, which participated in a traditional physical therapy exercise program for 3 successive months. Baseline and posttreatment assessments were performed using the Biodex isokinetic dynamometer to evaluate the knee extensors peak torque at 60 degrees per second and 90 degrees per second and using the Biodex balance system to evaluate stability index.

RESULTS:
The children in the experimental group showed a significant improvement when compared with those in the control group (P < 0.001). The peak torque at 60 degrees per second and 90 degrees per second after treatment was 28.8 ± 0.45 and 47.5 ± 0.7 N · m and 30.9 ± 0.68 and 54.2 ± 1.7 N · m for the control and the experimental group, respectively. The overall stability index after treatment was 2.75 and 2.2 for the control group and the experimental group, respectively.

CONCLUSIONS:
Whole-body vibration training may be a useful tool for improving muscle strength and balance in children with diplegic cerebral palsy.

PMID: 24434887 [PubMed – indexed for MEDLINE]

Clinical Rehabilitation February 14, 2013

Effect of whole body vibration training on mobility in children with cerebral palsy: a randomized controlled experimenter-blinded study

Byoung-Kwon Lee, Seung-Chul Chon Department of Physical Therapy, Konyang University, Daejeon, Republic of Korea
Seung-Chul Chon, Department of Physical Therapy, College of Medical Science, Konyang University, Gasuwon-Dong, Seo-Gu, Daejeon 302-718, Republic of Korea.

Abstract

Objective: To evaluate ambulatory function and leg muscle thickness after whole body vibration training in children with cerebral palsy.

Design: A block randomized controlled trial with two groups.

Setting: Physical therapy department laboratory.

Subjects: A total of 30 (15 experimental, mean (SD) age 10.0 (2.26) years and 15 control, 9.6 (2.58)) children with cerebral palsy, 15 males and 15 females.

Interventions: The experimental group underwent whole body vibration training combined with conventional physical therapy training; the control group underwent conventional physical therapy training three days a week for eight weeks respectively.

Main outcome measures: Three-dimensional gait analyses and ultrasonographic imaging of the leg muscles were measured at pre- and post-test of intervention for eight weeks.

Results: Whole body vibration training resulted in significantly better gait speed (P = 0.001, from 0.37 (0.04) m/s to 0.48 (0.06)), stride length (P = 0.001, from 0.38 (0.18) m to 0.48 (0.18)) and cycle time (P = 0.001, from 0.85 (0.48) s to 0.58 (0.38)) in the experimental group compared with that in the control group. The ankle angle (P = 0.019, from 7.30 (4.02) degree to 13.58 (8.79)) also showed a remarkable increase in the experimental group, but not the hip (P = 0.321) and knee angle (P = 0.102). The thicknesses of the tibialis anterior (P = 0.001, 0.48 (0.08) mm to 0.63 (0.10)) and soleus (P = 0.001, 0.45 (0.04) mm to 0.63 (0.12)) muscles were significantly higher in the experimental group than in the control group. However, no significant effect was observed in the thickness of the gastrocnemius muscle (P = 0.645).

Conclusions: These findings suggest that whole body vibration may improve mobility in children with cerebral palsy, probably through a positive effect on the leg muscles