Effects of Eight Months of Whole-Body Vibration Training on the Muscle Mass and Functional Capacity of Elderly Women

Fernanda Santin-Medeiros, Juan P. Rey-López, Alejandro Santos-Lozano, CARLOS SEBASTIAN CRISTI MONTERO, Nuria Garatachea Vallejo

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)1863-1869
Number of pages7
JournalJournal of Strength and Conditioning Research
Volume29
Issue number7
DOIs
StatePublished - 11 Jul 2015

Keywords

  • aging
  • intervention
  • physical activity
  • sarcopenia

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