Muscle Force, Explosive Strength and Vertical Jump Height
Conditions
Keywords
H reflex; muscle activation; rate of force development; whole body vibration
Brief summary
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.
Interventions
OTHERvibration
8 week vibration
Sponsors
National Taiwan University Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Masking
SINGLE (Investigator)
Eligibility
Sex/Gender
MALE
Age
18 Years to 30 Years
Healthy volunteers
Yes
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.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| evoked spinal reflex | 8 weeks | 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. |
Countries
Taiwan
Contacts
Primary ContactHsing-Kuo Wang, PhD
Outcome results
None listed