Effects of fitness and vibration training on muscle quality: A 1-year postintervention follow-up in older men

Available online 16 December 2012
Publication year: 2012
Source:Archives of Physical Medicine and Rehabilitation



Objective To evaluate the residual effects of fitness and whole-body vibration training in older men 1 year after completion of the interventions. Design A 1-year follow-up of a randomized controlled trial comparing the effects of 1 year of fitness training, including resistance training and aerobic training (R+A) and whole-body vibration (WBV) training to a control (CON) group. Setting University Training Center. Participants Seventy-two men, between 60 and 80 years old. Response rate was 80%, 92% and 90% in the R+A (n=20), WBV (n=23) and CON (n=29) groups, respectively. Interventions The intervention groups exercised three times weekly during 1 year. The R+A group performed a standard training program, combining resistance exercises and aerobic training, following the ACSM guidelines. The WBV group performed unloaded static and dynamic leg exercises on a vibration platform. The CON group did not participate in any training program. Main outcome measures Muscle volume, isometric and concentric muscle strength, muscle quality and muscle power. Results Both interventions had resulted in comparable increases in muscle quality characteristics. No significant changes had been found in the CON group. During the 1-year follow-up period, the R+A (-4.05%, p=.006) and WBV (-2.46%, p<.0001) group had lost most of their gains in muscle volume. However, isometric muscle strength was preserved in the R+A group (+1.65%, p=.745), resulting in an increase in muscle quality (+7.97%, p=.034). In the WBV group, muscle power decreased (-6.10%, p<.0001), but remained significantly higher than baseline (p=.038). Except for a strong decrease in muscle power, no significant changes were found in the CON group. Conclusions One year of R+A and/or WBV training can equally reverse the adverse effects of ageing on muscle quality in older men, but their residual impact after follow-up is different.

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