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FDG-PET imaging of lower extremity muscular activity during level walking

  • Published:
Journal of Orthopaedic Science

Abstract.

 We analyzed muscular activity of the lower extremities during level walking using positron emission tomography (PET) with 18F-fluorodeoxyglucose (18F-FDG). We examined 17 healthy male subjects; 11 were assigned to a walking group and 6 to a resting group. After 18F-FDG injection, the walking group subjects walked at a free speed for 15 min. A whole-body image was then obtained by a PET camera, and the standardized uptake ratio (SUR) was computed for each muscle. The SUR for each muscle of the walking group was compared with that for the corresponding muscles in the resting group. The level of muscular activity of all the muscles we examined were higher during level walking than when resting. The activity of the lower leg muscles was higher than that of the thigh muscles during level walking. The muscular activity of the soleus was highest among all the muscles examined. Among the gluteal muscles, the muscular activity of the gluteus minimus was higher than that of the gluteus maximus and gluteus medius. The concurrent validity of measuring muscular activity of the lower extremity during level walking by the PET method using 18F-FDG was demonstrated.

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Authors and Affiliations

  1.  Department of Rehabilitation Medicine for Persons with Physical Disability, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan, , , , , , JP

    Naoyuki Oi, Tsutomu Iwaya & Yoshiko Tobimatsu

  2.  Division of Cyclotron Nuclear Medicine, Cyclotron and Radioisotope Center, Tohoku University, Sendai, Japan, , , , , , JP

    Masatoshi Itoh & Keiichiro Yamaguchi

  3.  Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, Sendai, Japan, , , , , , JP

    Toshihiko Fujimoto

Authors
  1. Naoyuki Oi
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  2. Tsutomu Iwaya
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  3. Masatoshi Itoh
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  4. Keiichiro Yamaguchi
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  5. Yoshiko Tobimatsu
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  6. Toshihiko Fujimoto
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Additional information

Received: January 28, 2002 / Accepted: September 25, 2002

Acknowledgments. This work was supported in part by Grant-in-Aid (C) 11835007 from the Ministry of Education, Science, Sports, and Culture of the Japanese Government. The authors thank Misaki Hidaka, Naomi Yoshino, Yasuhiro Okada, and Jinro Takato of the Department of Rehabilitation Medicine for Persons with Physical Disability and the entire staff at the Cyclotron and Radioisotope Center, Tohoku University, for their support and collaboration.

Offprint requests to: N. Oi

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Oi, N., Iwaya, T., Itoh, M. et al. FDG-PET imaging of lower extremity muscular activity during level walking. J Orthop Sci 8, 55–61 (2003). https://doi.org/10.1007/s007760300009

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  • DOI: https://doi.org/10.1007/s007760300009

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