Acute Effects of Whole Body Vibration in Chronic Stroke

Not Applicable

• Conditions: Stroke
• Interventions: Procedure: Low frequency whole body vibration; Procedure: control; Procedure: High frequency whole body vibration

• Registration Number: NCT01211093
• Lead Sponsor: The Hong Kong Polytechnic University

Brief Summary

Whole body vibration has been found to be useful in promoting bone health, balance, and muscle performance in older adults. The overall aim of the proposed study is to determine whether whole body vibration (WBV) has immediate beneficial effect in neuromotor performance in patients with stroke. It is hypothesized that a single session of WBV will induce significant improvement in leg muscle strength in people with chronic stroke.

Detailed Description

Not available

Study Timeline

• Study Start: 2009-11
• Study First Submitted: 2010-09-17
• Study First Submitted QC: 2010-09-28
• Study First Posted: 2010-09-29
• Status Verified: 2012-11
• Last Update Submitted: 2012-11-26
• Last Update Posted: 2012-11-28
• Primary Completion: 2013-04
• Study Completion: 2013-07

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 50

Inclusion Criteria

• a diagnosis of stroke
• stroke onset >6 months
• >18 years of age
• >able to walk for short distance independently with or without walking aid
• able to understand simple verbal commands

Exclusion Criteria

• other neurological conditions
• peripheral vascular disease
• vestibular disorders
• significant musculoskeletal disorders (e.g. rheumatoid arthritis)
• pregnancy

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
low frequency whole body vibration	Low frequency whole body vibration	This group will receive a single 10-minute session of WBV. The frequency of the vibration signals will be set at 20 Hz.
Control	control	This group will stand on the same vibration platform for 10 minutes, but no vibration will be given.
High frequency whole body vibration	High frequency whole body vibration	This group will receive a single 10-minute session of WBV therapy. The frequency of the vibration signals will be set at 30Hz.

Primary Outcome Measures

Name	Time	Method
knee extension isokinetic strength	2 weeks

Secondary Outcome Measures

Name	Time	Method
Muscle activity (electromyography) of knee extensors	during treatment
knee extension isometric strength	2 weeks
knee flexion isometric strength	2 weeks
knee flexion isokinetic strength	2 weeks

Trial Locations

Locations (1)

The Hong Kong Polytechnic University; 🇨🇳 Hong Kong, China