Beef Extract Supplementation Increases Leg Muscle Mass and Modifies Skeletal Muscle Fiber Types in Rats
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概要
- 論文の詳細を見る
The objective of this research was to investigate the effects of beef extract on fat metabolism, muscle mass and muscle fiber types in rats. We also investigated the synergetic effect of endurance exercise. Twenty-four male rats weighing about 270g were assigned to two diets containing 0 or 6% beef extract (BE). Half the rats fed each diet were subjected to compulsory exercise (CE) for 30 min every other day. After 4 weeks feeding, the blood was collected and various organs were dissected. The muscle fiber type of the soleus and extensor digitorum longus (EDL) muscles were evaluated by histochemical and electrophoretical analyses. Rats supplemented with BE showed a decrease in fat content in liver and abdomen and an increase in the activity of carnitine palmitoyl transferase II in liver. BE as well as exercise increased the relative weights of both soleus and EDL. BE alone and BE plus CE did not affect the distribution of muscle fiber types in soleus. BE without exercise decreased in type IIb of EDL from 54% to 44% with compensatory increase in type IIa from 41% to 49% and type I from 5% to 7% compared with the nonsupplemented, nonexercised control group. No synergetic effect on a fast to slow fiber conversion due to the combination of BE and CE was detected. Thus, BE supplement increased muscle mass and slow type fiber in EDL. The effects of BE supplement on muscle characteristics were similar to those of exercise.
- 日本ビタミン学会の論文
著者
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IKEUCHI Yoshihide
Department of Animal Science, Faculty of Agriculture, University of Niigata
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TATSUMI Ryuichi
Department of Bioscience and Biotechnology, Graduate School of Agriculture, Kyushu University
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Tatsumi R
九州大学 農学部
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Tatsumi Ryuichi
Department Of Bioscience And Biotechnology Graduate School Of Agriculture Kyushu University
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Tatsumi Ryuichi
Graduate School Of Agriculture Kyushu University
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Tatsumi Ryuichi
Meat Science Laboratory Department Of Animal Science Faculty Of Agriculture Hokkaido University
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Tatsumi Ryuichi
Laboratory Of Chemistry And Technology Of Animal Products Division Of Applied Biological Chemistry G
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HAYASHI Toshiya
Department of Electrical Engineering, Shizuoka University
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SEKIGUCHI TAKESHI
Ito Life Science Co., Ltd.
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ITO Tatsumi
Department of Bioscience and Biotechnology, Kyushu University Graduate School
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Kawabata Fuminori
Department Of Bioscience And Biotechnology Graduate School Of Agriculture Kyushu University
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Yoshihara Hiroyuki
Department Of Bioscience And Biotechnology Graduate School Of Agriculture Kyushu University
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Ito Tatsumi
Department Of Bioscience And Biotechnology Graduate School Of Agriculture Kyushu University
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Ito Tatsumi
Department Of Animal Science Faculty Of Agriculture Kyushu University
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Hayashi Toshiya
Department Of Applied Biological Chemistry Faculty Of Agriculture Meijo University
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WAKAMATSU Jun-ichiro
Department of Bioscience and Biotechnology, Graduate School of Agriculture, Kyushu University
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MORI Sunao
Department of Bioscience and Biotechnology, Graduate School of Agriculture, Kyushu University
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HARUNO Atsushi
Department of Bioscience and Biotechnology, Graduate School of Agriculture, Kyushu University
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MIZUNOYA Wataru
Department of Bioscience and Biotechnology, Graduate School of Agriculture, Kyushu University
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Mori Sunao
Department Of Bioscience And Biotechnology Graduate School Of Agriculture Kyushu University
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Haruno Atsushi
Department Of Bioscience And Biotechnology Graduate School Of Agriculture Kyushu University
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Mizunoya Wataru
Faculty Of Agriculture Kyushu University
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Hattori Akihito
Meat Science Laboratory Graduate School Of Agriculture Hokkaido University
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Wakamatsu Jun-ichiro
Department Of Bioscience And Biotechnology Graduate School Of Agriculture Kyushu University
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Sekiguchi Takeshi
Ito Life Science Co. Ltd.
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Sekiguchi Takeshi
Ito Life Sciences Inc.
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Ikeuchi Y
Faculty Of Agriculture Kyushu University
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Ikeuchi Yoshihide
Department Of Animal Science Faculty Of Agriculture University Of Niigata
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Mizunoya Wataru
Department Of Bioscience And Biotechnology Graduate School Of Agriculture Kyushu University
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