Differential glucose uptake in quadriceps and other leg muscles during one-legged dynamic submaximal knee-extension exercise

One-legged dynamic knee-extension exercise (DKE) is a widely used model to study the local cardiovascular and metabolic responses to exercise of the quadriceps muscles. In this study, we explored the extent to which different muscles of the quadriceps are activated during exercise using positron emi...

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Bibliographic Details
Published in:Frontiers in physiology 2011-01, Vol.2, p.75-75
Main Authors: Kalliokoski, Kari K, Boushel, Robert, Langberg, Henning, Scheede-Bergdahl, Celena, Ryberg, Ann Kathrine, Døssing, Simon, Kjær, Andreas, Kjær, Michael
Format: Article
Language:English
Subjects:
Electromyography
glucose uptake
knee-extensors
Metabolism
Muscle activation
Physiology
positron emission tomography
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Summary:One-legged dynamic knee-extension exercise (DKE) is a widely used model to study the local cardiovascular and metabolic responses to exercise of the quadriceps muscles. In this study, we explored the extent to which different muscles of the quadriceps are activated during exercise using positron emission tomography (PET) determined uptake of [(18)F]-fluoro-deoxy-glucose (GU) during DKE. Five healthy male subjects performed DKE at 25 W for 35 min and both the contracting and contralateral resting leg were scanned with PET from mid-thigh and distally. On average, exercise GU was the highest in the vastus intermedius (VI) and lowest in the vastus lateralis (VL; VI vs VL, p 
ISSN:1664-042X
1664-042X
DOI:10.3389/fphys.2011.00075