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Energy metabolism in human calf muscle performing isometric plantar flexion superimposed by 20-Hz vibration

Zange, Jochen and Haller, Timo and Müller, Klaus and Liphardt, Anna-Maria and Mester, Joachim (2009) Energy metabolism in human calf muscle performing isometric plantar flexion superimposed by 20-Hz vibration. European Journal of Applied Physiology, 105 (2), pp. 265-270. Springer Verlag.

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Abstract

Vibration training is commonly expected to induce an active muscle contraction via a complex reflex mechanism. In calf muscles of 20 untrained subjects, the additional energy consumption in response to vibration superimposed on an isometric contraction was examined by 31P magnetic resonance spectroscopy and by near infrared spectroscopy. Subjects performed 3 min of isometric plantar flexion exercise at 40% MVC under four conditions: with (VIB) and without (CON) superimposed 20 Hz vibration at +/-2 mm amplitude, both combined with or without arterial occlusion (AO). After contraction under all conditions, the decreases in oxygenated haemoglobin were not significantly different. After VIB + AO consumption of ATP was increased by 60% over CON + AO, visible by significant decreases in [PCr] and intracellular pH (P < 0.05). The additional energy consumption by vibration was not detectable under natural perfusion. Probably without AO the additional energy consumption by vibration was compensated by oxidative phosphorylation enabled by additional perfusion.

Document Type:Article
Title:Energy metabolism in human calf muscle performing isometric plantar flexion superimposed by 20-Hz vibration
Authors:
AuthorsInstitution or Email of Authors
Zange, JochenUNSPECIFIED
Haller, TimoUNSPECIFIED
Müller, KlausUNSPECIFIED
Liphardt, Anna-MariaUNSPECIFIED
Mester, JoachimDeutsche Sporthochschule Köln
Date:January 2009
Journal or Publication Title:European Journal of Applied Physiology
Refereed publication:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:105
Page Range:pp. 265-270
Publisher:Springer Verlag
Status:Published
Keywords:Muscle physiology, Vibration training, Energy Metabolism, Magnetic resonance spectroscopy
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W FR - Forschung unter Weltraumbedingungen (old)
DLR - Research area:Space
DLR - Program:W FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):W - Vorhaben Beschleunigungsinduzierte Effekte (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Space Physiology
Deposited By: Dr.rer.nat. Jochen Zange
Deposited On:13 Jan 2009
Last Modified:07 Feb 2013 20:11

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