Effects of Eight Months of Whole-Body Vibration Training on the Muscle Mass and Functional Capacity of Elderly Women. Issue 7 (July 2015)

• Record Type: Journal Article
• Authors: Santin-Medeiros, Fernanda; Rey-López, Juan P.; Santos-Lozano, Alejandro; Cristi-Montero, Carlos S.; Garatachea Vallejo, Nuria
• Is Part Of: Journal of strength and conditioning research. Volume 29:Issue 7(2015)
• Publication Date: 2015-07
• Subjects: sarcopenia -- physical activity -- intervention -- aging; Physical education and training -- Periodicals; Weight training -- Physiological aspects -- Periodicals; Physical fitness -- Periodicals; 613.7
• DOI: 10.1519/JSC.0000000000000830
• Languages: English
• ISSNs: 1064-8011

Abstract

Abstract : Abstract: Santin-Medeiros, F, Rey-López, JP, Santos-Lozano A, Cristi-Montero, CS, and Garatachea Vallejo, N. Effects of eight months of whole-body vibration training on the muscle mass and functional capacity of elderly women. J Strength Cond Res 29(7): 1863–1869, 2015—Few intervention studies have used whole-body vibration (WBV) training in the elderly, and there is inconclusive evidence about its health benefits. We examined the effect of 8 months of WBV training on muscle mass and functional capacity in elderly women. A total of 37 women (aged 82.4 ± 5.7 years) voluntarily participated in this study. Subjects were randomly assigned to a vibration group ( n = 19) or a control group ( n = 18). The vibration group trained on a vertical vibration platform twice a week. The control group was requested not to change their habitual lifestyle. The quadriceps femoris muscle cross-sectional area was determined by magnetic resonance imaging. All participants were evaluated by a battery of tests (Senior Fitness Test) to determine their functional capacity, as well as handgrip strength and balance/gait. General linear repeated-measure analysis of variance (group by time) was performed to examine the effect of the intervention on the outcomes variables. After 8 months, nonstatistically significant differences in the quadriceps CSA (pre-training: 8, 516.16 ± 1, 271.78 mm 2 and post-training: 8, 671.63 ± 1, 389.03 mm 2 ) ( p > 0.05) were found in the WBV group (Cohen's d : −0.12), whereas the CON group significantly decreased muscle mass (pre-training: 9, 756.18 ± 1, 420.07 mm 2 and post-training: 9, 326.82 ± 1, 577.53 mm 2 ), with moderate effect size evident (Cohen's d : 0.29). In both groups, no changes were observed in the functional capacity, handgrip strength and balance/gait. The WBV training could prevent the loss of quadriceps CSA in elderly women.