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Abstract #2704

The visualization technique of the distribution of muscle quality by sport characteristics / changes due to growth using q-space imaging

Daisuke Nakashima1, Junichi Hata2, Yasushi Sera1, Hirotaka James Okano2, Kazuki Sato1, Takeo Nagura1, Hideyuki Okano1, Morio Matsumoto1, and Masaya Nakamura1
1Keio University School of Medicine, Tokyo, Japan, 2Jikei University School of Medicine, Tokyo, Japan

We evaluated the muscle quality of lower limbs among four groups: controls, marathon players, powerlifters, and teenagers using q-space imaging. Initially, we confirmed that fast muscle fiber has a larger cell size than slow muscle fiber in cadaveric immunohistology study of the tibialis anterior muscle (TA). In addition, there were many fast muscle fiber in the TA. In q-space imaging study, the cell diameter increased in the process of growing up from teenage to adulthood, which indicates an increase in fast muscle cells according to growth. Furthermore, the powerlifting players had more enlarged fast muscle cells than other groups.

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