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. 2009 Oct-Dec;9(4):225-35.

Resistive vibration exercise reduces lower limb muscle atrophy during 56-day bed-rest

D L Belavý  1 , T Miokovic, G Armbrecht, J Rittweger, D Felsenberg
Affiliations
  • PMID: 19949280
Free article

Resistive vibration exercise reduces lower limb muscle atrophy during 56-day bed-rest

D L Belavý et al. J Musculoskelet Neuronal Interact. 2009 Oct-Dec.
Free article

Abstract

Objectives: The current study aimed to examine the effectiveness of a resistive vibration exercise countermeasure during prolonged bed-rest in preventing lower-limb muscle atrophy.

Methods: 20 male subjects underwent 56-days of bed-rest and were assigned to either an inactive control, or a countermeasure group which performed high-load resistive exercises (including squats, heel raises and toe raises) with whole-body vibration. Magnetic resonance imaging of the lower-limbs was performed at two-weekly intervals. Volume of individual muscles was calculated.

Results: Countermeasure exercise reduced atrophy in the triceps surae and the vastii muscles (F>3.0, p<.025). Atrophy of the peroneals, tibialis posterior and toe flexors was less in the countermeasure-subjects, though statistical evidence for this was weak (F<or=2.3, p>or=.071). Atrophy in the hamstring muscles was similar in both groups (F<1.1, p>.38). The adductor longus, sartiorius and rectus femoris muscles showed little loss of muscle volume during bed-rest (F<1.7, p>.15).

Conclusions: The countermeasure exercise programme was effective in reducing atrophy in the extensors of the knee and ankle but not the hamstrings.

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