AUTHOR=Kalliokoski Kari , Boushel Robert , Langberg Henning , Scheede-Bergdahl Celena , Ryberg Ann K., Doessing Simon , Kjaer Andreas , Kjaer Michael TITLE=Differential Glucose Uptake in Quadriceps and Other Leg Muscles During One-Legged Dynamic Submaximal Knee-Extension Exercise JOURNAL=Frontiers in Physiology VOLUME=2 YEAR=2011 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2011.00075 DOI=10.3389/fphys.2011.00075 ISSN=1664-042X ABSTRACT=
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 [18F]-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,