Effects of L-glutamine intake on muscle fatigue and neutrophil functions during a judo training camp

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  • Nomura Tadahiro
    Department of Social Medicine, Hirosaki University Graduate School of Medicine Miki House Co. Ltd.
  • Umeda Takashi
    Department of Social Medicine, Hirosaki University Graduate School of Medicine
  • Takahashi Ippei
    Department of Social Medicine, Hirosaki University Graduate School of Medicine
  • Iwane Kaori
    Department of Social Medicine, Hirosaki University Graduate School of Medicine
  • Okubo Noriyuki
    Department of Social Medicine, Hirosaki University Graduate School of Medicine
  • Ciba Yoshinobu
    Department of Social Medicine, Hirosaki University Graduate School of Medicine
  • Miyake Ryosuke
    Nippon Sport Science University
  • Konishi Hiroyuki
    Department of Social Medicine, Hirosaki University Graduate School of Medicine Sendai University
  • Tokuda Itoyo
    Department of Social Medicine, Hirosaki University Graduate School of Medicine
  • Komatsu Miho
    Healthcare Products Development Center, KHOWA HAKKO BIO CO. LTD.
  • Nakaji Shigeyuki
    Department of Social Medicine, Hirosaki University Graduate School of Medicine

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Other Title
  • 強化合宿中の L-グルタミンの摂取が柔道選手の筋組織，好中球機能に及ぼす影響について

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Abstract

    We assessed the effects of L-glutamine intake on muscle tissues and neutrophil functions of judoists after intensive training. Thirty-five male judoists of university student were divided into two groups; glutamine group (18 subjects) and placebo group (17 subjects). During the 7-day intensive judo training camp, a total of 6g of L-glutamine or placebo per day was given to each subject. Myogenic enzymes, reactive oxygen species (ROS) production capability and phagocyte activity (PA) of neutrophils were measured before and after the 2-hour intensive judo practice on the day before and after the training camp. As a result, at pre-practice, levels of all myogenic enzymes tended to be increased from pre-camp to post-camp in the control group （p<0.05 for CK; p<0.01 for AST, ALT and LDH）, whereas such trend was not seen in the glutamine group. Further, the changing rate (before and after the practice) of ROS and PA tended to be lower in the glutamine group than in the control group after the training camp (p<0.05 for PA; p=0.10 for ROS), however there were no significant differences in those between two groups before the training camp (p=0.25 for PA; p=0.28 for ROS). In conclusion, intake of glutamine during an intensive judo training camp had a protective effect against damaged muscle functions and immune functions.

Journal

  • Hirosaki Medical Journal

    Hirosaki Medical Journal 64 (2-4), 144-157, 2014

    Hirosaki University Graduate School of Medicine,Hirosaki Medical Society

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