Changes in motor unit activity and respiratory oxygen uptake during 6 weeks of progressive whole-body vibration combined with progressive, high intensity resistance training.
J Musculoskelet Neuronal Interact
; 19(2): 159-168, 2019 06 01.
Article
in En
| MEDLINE
| ID: mdl-31186386
ABSTRACT
OBJECTIVES:
We hypothesized that the additional activation of motor units (MU) and the elevation of metabolic energy turnover resulting from whole-body vibration (WBV) superimposed to high intensity resistance training on a smith machine persist after 6 weeks of training with progressively increasing loads and vibration frequencies.METHODS:
Two groups of healthy male subjects performed either 6 weeks of Resistive Vibration Exercise (RVE, squats and heel raises with WBV, n=13) or Resistive Exercise (RE using the same protocol, n=13). During the first (pre) and the last training session (post), we determined the oxygen uptake changes normalized to total training weight (∆V'O2/ttw) and the normalized MU activity from rectus femoris (squats) and gastrocnemius lateralis (heel raise) muscles filtered for vibration frequencies and harmonics (EMG/ttw).RESULTS:
At pre measurement, RVE induced higher EMG/ttw (squats) than RE alone (group effect, P=0.006). At post measurement, EMG/ttw was reduced (time effects between P=0.087 and P<0.001 for both groups and exercises). At pre and post measurement, ∆V'O2/ttw was higher during RVE than during RE (group effects between P=0.005 and P=0.099 for both exercises).CONCLUSIONS:
RVE permanently elevated metabolic energy turnover, although the initially observed additional MU activity by RVE could not be preserved in the working musculature.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Oxygen Consumption
/
Recruitment, Neurophysiological
/
Vibration
/
Exercise Therapy
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Resistance Training
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High-Intensity Interval Training
Limits:
Adult
/
Humans
/
Male
Language:
En
Journal:
J Musculoskelet Neuronal Interact
Journal subject:
FISIOLOGIA
/
NEUROLOGIA
/
ORTOPEDIA
Year:
2019
Document type:
Article
Affiliation country:
Germany