The Effects of Combining Whole Body Vibration Training With Plyometric Jumping on the Neuromuscular Adaptations of Human Triceps Surae Muscles

Study Overview
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Brief Summary
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Muscle force, explosive strength and vertical jump height are important parameters determining the performance of athletes. Traditionally, high intensity resistance training, explosive strength training and plyometric training are used to improve athletes' performance. Recently, whole body vibration training is recommended for increasing muscle force and explosive strength, because vibrating platform could provide high gravitational acceleration to activate muscle activation and sensory input to spinal reflex. Design: Prospective and randomized control study. Subjects: Healthy male subjects with regular training or competition at least 6 hours per week. Methods: H-reflex, V-wave, triceps surae activation level and rate of force development are measured at pre-training, mid-training (5th week) and post-training. Subjects will receive 8 weeks, 3 times/week, training programs including plyometric jumping or static squat on whole body vibration platform. Data analysis: Data will be analyzed using SPSS 13.0 software (SPSS Inc., Chicago, IL) and two-way ANOVA will be used for data analysis.

Official Title
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The Effects of Combining Whole Body Vibration Training With Plyometric Jumping on the Neuromuscular Adaptations of Human Triceps Surae Muscles

Conditions
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Muscle Force, Explosive Strength and Vertical Jump Height

Intervention / Treatment
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* Other: vibration


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: subjects who had not been engaged in systematic strength training and had no history of knee, leg, or ankle pain that caused a subject to seek medical help during the year prior to the recruitment. Exclusion Criteria: Subjects who missed more than one training session or participated in any other type of fitness training were excluded.

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

Sexes Eligible for Study
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Male

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| No Intervention: No vibration<br> | |
| Active Comparator: vibration<br> | Other: vibration<br>* 8 week vibration<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| evoked spinal reflex | In terms of evoked spinal reflexes, modulations of spinal inhibitory inter-neuronal circuits are often assessed by the Ia-afferent-mediated H-reflex. Results of H reflexes in studies with training are tightly coupled with excitability changes of small alpha motor neurons. The first volitional (V) wave, an electrophysiological variant of the H-reflex, is used to indicate the net excitation of the motorneurone pool. | 8 weeks | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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H reflex; muscle activation; rate of force development; whole body vibration