Stroke
Conditions
Keywords
vibration, bone, mucle, cerebrovascular accident, rehabilitation
Brief summary
Whole body vibration (WBV) has been found to be useful in promoting bone health and muscle performance in older adults. To date, no study has examined the effects of different WBV frequencies on the properties of the muscle-bone unit in stroke patients. The overall aim of the proposed study is to compare the efficacy of different vibration frequencies on properties of the muscle function and bone turnover among people with chronic stroke. It is hypothesized that the higher-vibration frequency protocol will lead to significantly better outcomes related to the bone turnover and muscle function.
Detailed description
Whole body vibration (WBV) has been found to be useful in promoting bone health and muscle performance in older adults. To date, no study has examined the effects of different WBV frequencies on the properties of the muscle-bone unit in stroke patients. The overall aim of the proposed study is to compare the efficacy of different vibration frequencies on properties of the muscle function and bone turnover among people with chronic stroke. It is hypothesized that the higher-vibration frequency protocol will lead to significantly better outcomes related to the bone turnover and muscle function in people with chronic stroke.
Interventions
PROCEDUREHigh frequency whole body vibration
1 single session ( 8 minutes) of whole body vibration therapy at 30 Hz
PROCEDURELow frequency whole body vibration
1 single session ( 12 minutes) of whole body vibration therapy at 20 Hz
Sponsors
The Hong Kong Polytechnic University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
1. a diagnosis of stroke 2. stroke onset \>6 months 3. \>18 years of age 4. able to walk for short distance independently with or without walking aid 5. able to understand simple verbal commands
Exclusion criteria
1. neurological conditions other than stroke 2. significant musculoskeletal conditions (e.g. amputations) 3. metal implants in the lower extremity 4. previous fracture of the lower extremity 5. are currently taking bone resorption inhibitors or were taking the same before stroke. 6. significant peripheral vascular disease 7. vestibular disorders 8. pregnancy 9. Other serious illnesses that preclude the person from participating in the study
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| bone resorption marker | pre-test (week 0) | Serum level of aminoterminal crosslinked telopeptide |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Six Minute Walk Test | pre-test (week 0) | endurance test |
| Gait velocity | pre-test (week 0) | 10-meter walking test |
| Spasticity | pre-test (week 0) | H-reflex on tibial nerve and modified ashworth scale |
Countries
Hong Kong
Outcome results
None listed