Universität zu Köln

Rosenberger, Andre, Beijer, Asa, Schoenau, Eckhard, Mester, Joachim, Rittweger, Joern and Zange, Jochen (2019). 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). S. 159 - 169. NAFPLION: JMNI. ISSN 1108-7161

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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 (Delta V'O-2/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, Delta V'O-2/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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Rosenberger, Andre UNSPECIFIED UNSPECIFIED UNSPECIFIED Beijer, Asa UNSPECIFIED UNSPECIFIED UNSPECIFIED Schoenau, Eckhard UNSPECIFIED UNSPECIFIED UNSPECIFIED Mester, Joachim UNSPECIFIED UNSPECIFIED UNSPECIFIED Rittweger, Joern UNSPECIFIED UNSPECIFIED UNSPECIFIED Zange, Jochen UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-147002
Journal or Publication Title:	J. Musculoskelet. Neuronal Interact.
Volume:	19
Number:	2
Page Range:	S. 159 - 169
Date:	2019
Publisher:	JMNI
Place of Publication:	NAFPLION
ISSN:	1108-7161
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MUSCLE-ACTIVITY; ENERGY-METABOLISM; EXERCISE; FREQUENCY; RESPONSES; STRENGTH; PERFORMANCE; INCREASE Multiple languages Neurosciences; Physiology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/14700