Article

A systematic review and meta-analysis of randomized controlled trials
was undertaken to determine whether whole body vibration improves bone mineral
density and leg muscle strength in older adults. Data sources: Sources included
MEDLINE, CINAHL, EMBASE, PEDro, PubMed, Science Citation Index and the reference
list of each eligible article. Review methods: Article search and selection was
performed independently by two researchers. The methodological quality of each
selected article was rated by the PEDro scale.
RESULTS: Thirteen randomized
trials (18 articles) totalling 896 subjects fulfilled the selection criteria.
Four were considered to have good or excellent methodological quality and the
rest were rated as fair.
Meta-analyses revealed that whole body vibration has no
significant effect on hip or lumbar spine bone mineral density in older women
when compared with no intervention or active exercise (P > 0.05). Whole body
vibration, however, had a significant treatment effect on knee extension dynamic
strength (standardized mean difference = 0.63, P = 0.006), leg extension
isometric strength (standardized mean difference = 0.57, P = 0.003), and
functional measures of leg muscle strength such as jumping height (standardized
mean difference = 0.51, P = 0.010) and performance in sit-to-stand (standardized
mean difference = 0.72, P < 0.001) among older adults compared with no
intervention. CONCLUSION: Whole body vibration is beneficial for enhancing leg
muscle strength among older adults. However, the review suggests that whole body
vibration has no overall treatment effect on bone mineral density in older women.
No randomized trial has examined the effects of whole body vibration on bone
mineral density in older men.

Langue : ANGLAIS