title: The effect of adding whole-body vibration to squat training on the functional performance and self-report of disease status in elderly patients with knee osteoarthritis: a randomized, controlled clinical study.
abstract: OBJECTIVE
  The study objectives were to evaluate the effects of adding whole-body vibration to squat training on functional performance and self-report of disease in elderly individuals with knee osteoarthritis (OA).
  
  
  METHODS
  This was a prospective, randomized trial in which selected variables were evaluated at three periods: 3 weeks prior to the training, immediately prior, and after the end of the training.
  
  
  METHODS
  Twenty-three (23) elderly subjects were evaluated using four functional performance tests: Berg Balance Scale (BBS), Timed Get Up and Go Test (TGUG), Chair Stand Test (CST), and 6-Minute Walk Test (6MWT), and a self-report of the status of disease (WOMAC).
  
  
  METHODS
  The intervention lasted for 12 weeks, 3 times per week. The participants were randomized into two groups: (1) squat training with whole-body vibration, and (2) squat training without vibration.
  
  
  RESULTS
  Although there was no statistical difference in functional performance and self-report of disease status between the groups, performance in all the functional tests and in all the domains of WOMAC improved in the vibration group compared to their initial status. In the exercise group, performance improved only two tests (BBS and 6MWT), and there was a reduction in self-reported pain (WOMAC) compared to their initial status.
  
  
  CONCLUSIONS
  Although the addition of whole-body vibration to squat training failed to result in a significant improvement in functional performance and self-reported status of knee osteoarthritis in the elderly, the intragroup results suggest that whole-body vibration may represent a feasible and effective way of improving the functionality and self-perception of disease status in older adults with knee OA.
authors.affiliation: Federal University of the Jequitinhonha and Mucuri Valleys (UFVJM), School of Health and Biological Sciences, Exercise Physiology Laboratory, Diamantina, Minas Gerais, Brazil.
authors.forename: Núbia Carelli Pereira
authors.initials: NC
authors.lastname: Avelar
authors.forename: Adriano Prado
authors.initials: AP
authors.lastname: Simão
authors.forename: Rosalina
authors.initials: R
authors.lastname: Tossige-Gomes
authors.forename: Camila Danielle Cunha
authors.initials: CD
authors.lastname: Neves
authors.forename: Etel
authors.initials: E
authors.lastname: Rocha-Vieira
authors.forename: Cândido Celso
authors.initials: CC
authors.lastname: Coimbra
authors.forename: Ana Cristina Rodrigues
authors.initials: AC
authors.lastname: Lacerda
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D000369:Aged, 80 and over; D005081:Exercise Therapy; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000502:physiology; D008297:Male; D009068:Movement; D059352:Musculoskeletal Pain / Q000209:etiology / Q000628:therapy*; D020370:Osteoarthritis, Knee / Q000628:therapy*; D011187:Posture; D011446:Prospective Studies; D055070:Resistance Training / Q000379:methods*; D057566:Self Report; D014732:Vibration; D016138:Walking