Objective: To investigate the effect of 8-week whole body vibration training on gait performance and lower
extremity function in stroke patients with knee hyperextension.
Methods: Total 30 subjects with stroke were randomized into the control group (n=15) or the intervention group (n=15).
The patients of intervention group were treated with whole body vibration while the control group was treated with
placebo. The walking function, lower limb function and knee hyperextension times were assessed in this study. Gait
performances were evaluated by 10-meter walk test. The knee hyperextension times was visually observed and counted.
The lower limb function was evaluated by Fugl-Meyer motor assessment.
Results: The times of the knee hyperextension of the intervention group was significantly decreased compared with
control groups (P=0.000, d=1.749, 95%CI[2.915,7.285]). The walking function assessed by 10-meter test of intervention
group was significantly improved compared with control group (P=0.001, d=1.345, 95%CI[1.896,6.704]). The
performances of all the three tests were improved after training in both groups (P=0.000/P=0.000, d=1.500/d=1.952,
95%CI[3.309,9.891]/ 95%CI[5.549,12.45]; P=0.000/P=0.000, d=2.015/d=2.952, 95%CI[5.214,11.39]/95%CI[9.423,
15.98]; P=0.000/P=0.000, d=3.537/d=5.108, 95%CI[19.05,12.35]/95%CI[16.52,22.28]).
Conclusion: The results suggest that 8 weeks whole body vibration training can reduce knee hyperextension and increase
ambulatory speed in stroke patients.