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A single whole body vibration session influences quadriceps muscle strength, functional mobility and balance of elderly with osteopenia and/or osteoporosis? Pragmatic clinical trial
Ramos LAX, Rodrigues FTM, Shirahige L, de Fatima Alcantara Barros M, de Carvalho AGC, Guerino MR, de Lima Ferreira AP, Guerra RO, das Gracas Rodrigues de Araujo M
Journal of Diabetes and Metabolic Disorders 2019 Jun;18(1):73-80
clinical trial
7/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: Yes; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

BACKGROUND: The purpose of this study verify the immediate effect of whole body vibration (WBV) on quadriceps muscle strength, functional mobility and balance in elderly patients with Osteopenia and/or Osteoporosis. METHODS: This was a randomized pragmatic clinical trial with 34 elderly (32 women) randomly assigned to two groups: the experimental group (EG n = 17) who underwent low-frequency (16 Hz) WBV and the control group (CG n = 17) who performed the walk. Outcome measures were: quadriceps muscle strength measured by a maximal repetition test (1RM); functional mobility assessed by the Timed Up and Go (TUG) test and balance assessed by the Berg Balance Scale (BBS). RESULTS: In within-group interaction, a significant increase was observed in quadriceps muscle strength (EG p = 0.047) and balance (EG p = 0.012; CG p = 0.007). In between-groups interaction, a significant difference was not observed. There was an increase in the muscular strength of the EG and in the balance in both groups. CONCLUSION: An WBV training session was able to alter the muscular strength of the LQ and the balance of the elderly with Osteopenia and/or Osteoporosis. It is suggested, however, that future studies involving larger sample number and/or populations should be developed to analyze the short-term effects of WBV.

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