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JOURNAL
OF
SPORTS SCIENCE &
MEDICINE
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Research
article
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EFFECTS OF WHOLE-BODY VIBRATION ON RESISTANCE TRAINING FOR UNTRAINED ADULTS |
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Yusuke Osawa1 
and Yuko Oguma1,2 |
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1Graduate School of Health Management, 2Sports Medicine Research Center, Keio University, Kanagawa, Japan |
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© Journal of Sports Science and Medicine (2011) 10, 328 - 337 |
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| ABSTRACT | |||
| Although resistance training (RT) combined with whole-body vibration
(WBV) is becoming increasingly popular among untrained adults, the additional
effects of WBV on muscle fitness are still not well understood. The aim
of the present study was to evaluate the effects of WBV on muscle strength,
muscle power, muscle endurance, and neuromuscular activities compared with
the identical RT without WBV. Thirty-three individuals (6 males and 27 females;
22-49 years old) were randomly assigned to a training program using slow-velocity
RT coupled with WBV (RT- WBV group, n = 17) or an identical exercise program
without WBV (RT group, n = 16). Participants performed eight exercises per
60 min session on a vibration platform (RT-WBV group, frequency, 35 Hz;
amplitude, 2 mm) twice weekly for seven weeks. To evaluate the effects of
WBV, the maximal isometric and isokinetic knee extension strength, maximal
isometric lumbar extension strength, countermovement-jump, and the number
of sit-ups were measured before and after the trial. Significantly higher
increases were observed in the maximal isometric and concentric knee extension
strength (p = 0.02, p = 0.04 , respectively), and maximal isometric lumbar
extension strength at 60 degrees of trunk flexion (p = 0.02) in the RT-WBV
group (+36.8%, +38.4%, +26.4%, respectively) in comparison to the RT group
(+16.5%, +12.8%, +14.3%, respectively). A significant difference was also
observed between the RT-WBV group (+8.4%) and the RT group (+4.7%) in the
countermovement jump height (p = 0.02). In conclusion, the results suggest
that significant additional increases in maximal isometric and concentric
knee extension and lumbar extension strength, and countermovement jump height
can be achieved by incorporating WBV into a slow-velocity RT program during
the initial stage of regular RT in untrained healthy adults. Key words: Vibration, novice, adults, exercise, strength, power. |
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