Whole-body vibration augments resistance training effects on body composition in postmenopausal women.
Age-related changes in body composition are well-documented with a decrease in lean body mass and a redistribution of body fat generally observed. Resistance training alone has been shown to have positive effects on body composition, however, these benefits may be enhanced by the addition of a vibration stimulus.


OBJECTIVE
The purpose of this study was to determine the effects of 8 months of resistance training with and without whole-body vibration (WBV) on body composition in sedentary postmenopausal women.


METHODS
Fifty-five women were assigned to resistance only (RG, n=22), vibration plus resistance (VR, n=21) or non-exercising control (CG, n=12) groups. Resistance training (3 sets 10 repetitions 80% strength) was performed using isotonic weight training equipment and whole-body vibration was done with the use of the power plate (Northbrooke, IL) vibration platform for three times per week for 8 months. Total and regional body composition was assessed from the total body DXA scans at baseline (pre) and after 8 months (post) of training.


RESULTS
In the VR group, total % body fat decreased from pre- to post-time points (p<0.05), whereas, the CG group had a significant increase in total % body fat (p<0.05). Both training groups exhibited significant increases in bone free lean tissue mass for the total body, arm and trunk regions from pre to post (p<0.05). CG did not show any changes in lean tissue.


CONCLUSIONS
In older women, resistance training alone and with whole-body vibration resulted in positive body composition changes by increasing lean tissue. However, only the combination of resistance training and whole-body vibration was effective for decreasing percent body fat.
Fjeldstad
Cecilie
C
Department of Health and Exercise Science, University of Oklahoma, Norman, 73019, United States.
Palmer
Ian J
IJ
Bemben
Michael G
MG
Bemben
Debra A
DA
D000273:Adipose Tissue; D000368:Aged; D001823:Body Composition; D015519:Bone Density; D005260:Female; D006801:Humans; D008875:Middle Aged; D017698:Postmenopause / Q000502:physiology*; D055070:Resistance Training / Q000379:methods*; D014732:Vibration / Q000627:therapeutic use*; D014891:Weight Lifting / Q000502:physiology*