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JOURNAL
OF
SPORTS SCIENCE &
MEDICINE
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Research
article
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EFFECTS OF WHOLE-BODY VIBRATION TRAINING ON BONE-FREE LEAN BODY MASS AND MUSCLE STRENGTH IN YOUNG ADULTS |
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Yusuke Osawa1  ,
Yuko Oguma1,2 and Shohei Onishi1,2 |
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1Graduate School of Health Management and 2Sports Medicine Research Center, Keio University, Kanagawa, Japan |
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© Journal of Sports Science and Medicine (2011) 10, 97 - 104 |
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| ABSTRACT | |||
| Resistance training with whole-body vibration (WBV) is becoming
increasingly popular as an alternative to conventional resistance training
or as supplementary training. Despite its growing popularity, the specific
effects of WBV training on muscle morphology, strength, and endurance are
not well understood, particularly in young adults. The aim of this study
was to determine the effects of WBV training on bone-free lean body mass
(BFLBM), and maximal muscle strength and endurance in healthy, untrained,
young individuals. Eighteen healthy men and women (21-39 years) were randomly
assigned to either a body-weight exercise with WBV (VT) group or a control
exercise group without WBV (CON). Participants performed eight exercises
per 40- min session on a vibration platform (VT group, frequency = 30-40
Hz; amplitude = 2 mm) twice weekly for 12 weeks. Anthropometry, total and
regional BFLBM (trunks, legs, and arms) measured by dual- energy X-ray absorptiometry,
and muscle strength and endurance measured by maximal isometric lumbar extension
strength, maximal isokinetic knee extension and flexion strength, and the
number of sit- ups performed were recorded and compared. Two-way repeated-measures
ANOVA revealed no significant changes between the groups in any of the measured
variables. We conclude that 12 weeks of body weight vibration exercise compared
to body weight exercise alone does not provide meaningful changes to BFLBM
or muscle performance in healthy young adults.
Key words: vibration, exercise, lean body mass, young, untrained. |
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