Whole-body Vibration and Manual Ability

Study Overview
=================
Brief Summary
-----------------
Purpose: To evaluate the short-term effects of whole-body vibration (WBV), using reciprocating plate technique, on manual ability performance in healthy younger. Material and methods: 38 healthy young volunteers were randomized to WBV group (N=19; 6 men, 13 women; mean age 21, 3.8yrs) or control group (N=19; 6 men, 13 women; mean age 20.5, 3.5yrs). The subjects in the WBV group performed one series of five consecutive repetitions of 60 sec unsynchronised WBV (Zeptoring, Scisen GmbH, Germany; 4 Hz, amplitude 3mm) with a 1-min pause between administrations, three times a week. The controls did not receive any training. Both groups were evaluated at baseline and after intervention, in the Rey Juan Carlos University´s Gait Analysis Laboratory. Four outcome measures of Purdue Pegboard test (PPT): preferred hand (PH), non-preferred hand (NPH), both hands (BH) and assembly (A) was performed baseline and 5 min after intervention.

Official Title
-----------------
The Acute Effects of Whole-Body Vibration on Manual Ability Performance: A Randomized Controlled Trial

Conditions
-----------------
Vibration, Body Weight, Motor Activity

Intervention / Treatment
-----------------
* Device: Whole-body vibration (WBV)


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion criteria: - Healthy subjects aged between 18 and 30 years. Exclusion criteria: Contraindication for WBV: pregnancy, recent fractures, malignancies, kidney stones, cardiac pacemaker, infectious disease or recent thromboembolic. Subjects with any musculoskeletal o neurological disorders that affected their hands. Individuals already treated with WBV were excluded.

Ages Eligible for Study
-----------------
Minimum Age: 18 Years
Maximum Age: 30 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
Accepts Healthy Volunteers

Study Plan
=================
How is the study designed?
-----------------

Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Whole body vibration<br>The subjects in the WBV group performed one series of five consecutive repetitions of 60 sec unsynchronised multidimensional WBV (Zeptoring, Scisen GmbH, Germany; 4 Hz, amplitude 3mm) with a 1-min pause between administrations, three times a week. The construction of this device is designed to perform a nonharmonious generation of oscillating movements in vertical and horizontal planes in order to prevent occurrences of resonance and habituation of receptors. During the intervention, subjects wore thin-soled gymnastic-type shoes, carrying out in a squatting standing position, with slight flexion at the hips, knees and ankle joint, on the vibration platform. | Device: Whole-body vibration (WBV)<br>* Whole-body vibration (WBV) is a novel neuromuscular therapeutic intervention that has recently been developed since in the mid-1960s. Hagbart and Eklund showed in human experiments that a reflex muscle contraction can result as a consequence of applying vibrations to the muscular-tendon system. The subjects stand on a platform that generates stochastic vibrations at a frequency between 1-12.5 Hz.<br>|
| No Intervention: Control<br>The controls did not receive any training. | |

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Purdue Pegboard test (change) | Change in Purdue Pegboard test. This tool evaluates the fine dexterity | Baseline, immediately after intervention and one month after the intervention |