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Efficacy of WBV as a modality for inducing changes in body composition, aerobic fitness, and muscular strength: a pilot study

Authors Tapp LR, Signorile JF

Received 19 January 2012

Accepted for publication 18 February 2012

Published 23 December 2013 Volume 2014:9 Pages 63—72

DOI https://doi.org/10.2147/CIA.S30048

Review by Single-blind

Peer reviewer comments 2

Lauren R Tapp,1,3 Joseph F Signorile1,2,4

1Departments of Kinesiology and Sport Sciences, Coral Gables, 2Center on Aging, University of Miami Miller School of Medicine, Miami, FL, 3Department of Kinesiology, Temple University, Philadelphia, PA, 4Geriatric Research, Education, and Clinical Center, Bruce W Carter Department of Veterans Affairs Medical Center, Miami, FL, USA

Abstract: The purpose of this pilot study was to evaluate the effectiveness of whole body vibration (WBV) training as a modality for inducing changes in body composition, cardiovascular condition, and muscular strength in sedentary postmenopausal women. WBV training was compared with other training regimens, ie, aerobic training and circuit resistance training, commonly used to promote weight loss, cardiovascular conditioning, and muscular strength. Postmenopausal women (aged 48–60 years) were randomly assigned to WBV training, circuit resistance training, or aerobic training. Participants trained three times per week for 8 weeks. The training regimens were progressive in nature, with increases in training intensity and duration occurring throughout the 8-week period. Body composition was assessed using dual-energy X-ray absorptiometry analyses. A modified Bruce treadmill protocol was used to assess aerobic capacity (VO2peak) and time to peak exhaustion. Upper and lower body strengths were determined by one repetition maximum (1-RM) chest and leg presses, respectively. Variables were analyzed using separate 3 (exercise mode) × 2 (time) repeated-measures analysis of variance with effect sizes due to the small sample size. No significant main effects or interactions were seen for any body composition variable; however, moderate to large effect sizes (η2=0.243 and η2=0.257) were detected regarding interactions for percent body fat and lean body mass favoring aerobic training and circuit resistance training. For VO2peak, no significant main effects or interactions were detected (time, η2=0.150; P=0.11; time × group, η2=0.139; P=0.30); but a significant time effect was observed for time to peak exhaustion (η2=0.307; P=0.017). A significant interaction for upper body strength (η2=0.464; P=0.007), and main effect for time in lower body strength (η2=0.663; P=0.0001) was detected. Post hoc analysis indicated a significant increase in upper body strength for circuit resistance training (P=0.023) and a decrease for WBV training (P=0.015). Our results indicate that WBV may not be an effective alternative to traditional training with regard to body composition or aerobic capacity, but could have a positive impact on lower body strength.

Keywords: acceleration training, percent body fat, lean body mass, exercise, maximum oxygen consumption

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