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

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.

Study Overview

• Status: Unknown
• Conditions: Muscle Force, Explosive Strength and Vertical Jump Height
• Intervention / Treatment: Other: vibration

• Study Type: Interventional
• Enrollment (Anticipated): 30
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Taiwan
  • Taipei, Taiwan, 100
    • Recruiting
    • National Taiwan University
    • Contact: HK Wang, PhD; Email: hkwang@ntu.edu.tw
    • Principal Investigator: HK Wang, PhD

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 30 years (Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: Male

Description

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.

Study Plan

How is the study designed?

Design Details

• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
No Intervention: No vibration
Active Comparator: vibration	Other: vibration; 8 week vibration

What is the study measuring?

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

Collaborators and Investigators

• Sponsor: National Taiwan University Hospital
• Investigators: Study Chair: Hsing-Kuo Wang, PhD, National Taiwan University Hospital

Study record dates

Study Major Dates

• Study Start: January 1, 2011
• Primary Completion (Anticipated): November 1, 2011
• Study Completion (Anticipated): December 1, 2011

Study Registration Dates

• First Submitted: January 20, 2011
• First Submitted That Met QC Criteria: January 20, 2011
• First Posted (Estimate): January 24, 2011

Study Record Updates

• Last Update Posted (Estimate): January 24, 2011
• Last Update Submitted That Met QC Criteria: January 20, 2011
• Last Verified: January 1, 2011

More Information

Terms related to this study

• Keywords: H reflex; muscle activation; rate of force development; whole body vibration
• Other Study ID Numbers: 201009070R