An interventional study of Whole body vibration and Sham vibration in Muscle Physiology, sponsored by Istanbul Physical Medicine Rehabilitation Training and Research Hospital. Completed at 1 site in Turkey. Open to male participants aged 20 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-04-18.
Sponsored by Istanbul Physical Medicine Rehabilitation Training and Research Hospital · Not applicable, Interventional, and Basic science
This study evaluates whether an increase in the ipsilateral knee flexor muscle strength transfers to the contralateral knee extensors which are not exposed to vibration, when unilateral-isolated whole body vibration (WBV) is applied to the lower extremity. In the half of volunteers the right leg were exposed vibration, while in the other half the right leg were exposed sham vibration. Muscle strength were measured with the Cybex® (Massachusetts, USA) extremity-testing system.
This study was included 40 healthy volunteers. The change in the quadriceps muscle strength after 20 session of WBV exercises was evaluated this study. In the WBV group, 20 sessions of unilateral lower extremity vibration exercises were performed with the Whole Body Vibration (WBV) device. WBV was applied when the subjects are in the semi-squat position. WBV was implemented with Powerplate® Pro5 (PowerPlate® International Ltd, London, United Kingdom). During 20 sessions, the WBV amplitude and vibration time were increased gradually. In the first session, the subjects were do a 30-second, 30-35, 40- and 45-Hz low-amplitude WBV while the knee and hip joint were in 30 degrees of flexion (in the semi-squat position); 10-second rest period between vibration applications were applied. A total duration of WBV was be two minutes. In the 20th session, the subjects were given a 60-second, 30-, 35-, 40- and 45-Hz high-amplitude WBV while the knee and hip joint were in 45 degrees of flexion; 10-second rest period between vibration applications were applied. A total duration of WBV was eight minutes. During WBV, the left lower extremity was in the knee-hip flexion position but was not exposed the vibration.
The same experimental protocol was applied to the isometric exercise (control) group. Unlike the experimental group, sham vibration was applied to the control group. Before and after 20 session-exercise, both knee extensor isokinetic muscle strength was measured.
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Whole body vibration was applied on the right lower extremity.
Device: Whole body vibration
Unlike the experimental group, sham vibration was applied to the control group.
Device: Sham vibration
Whole body vibration was applied on the right lower extremity in the experimental group.
Sham vibration was applied on the right lower extremity in the Control sham group
Muscle strength gain of the untrained contralateral quadriceps muscle
Untrained contralateral quadriceps muscle strength was measured with the Cybex extremity-testing system before and after trial. Unit of this parameter was Nm
Time frame: four months
Plan to share: No
This study is completed, as verified in Apr 2019. You cannot join it, but the record below documents what was studied.
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Istanbul Physical Medicine Rehabilitation Training and Research Hospital