Evaluation of individual skeletal muscle activity by glucose uptake during pedaling exercise at different workloads using positron emission tomography

1 Center for Advancement of Higher Education, Tohoku University, Sendai; 2 Department of Physiological Sciences, National Institute of Fitness and Sports in Kanoya, Kagoshima; 3 Division of Cyclotron Nuclear Medicine, Cyclotron and Radioisotope Center, Tohoku University, Sendai; 4 Physical Fitness Research Institute, Meiji Yasuda Life Foundation of Health and Welfare, Tokyo; and 5 Department of Medicine and Science in Sports and Exercise, Graduate School of Medicine, Tohoku University, Sendai, Japan Submitted 26 June 2008 ; accepted in final form 8 June 2009 Skeletal muscle glucose uptake closely reflects muscle activity at exercise intensity levels