ウエイトトレーニング初期に伴う尿中3-Methylhistidine, Urea-Nitrogen, Creatinineの変動

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タイトル別名
  • CHANGES IN URINARY 3-METHYLHISTIDINE, UREA-NITROGEN AND CREATININE IN THE INITIAL PERIOD OF WEIGHT TRAINING
  • ウエイトトレーニング ショキ ニ トモナウ ニョウチュウ 3 Methylhi

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A study was couducted to determine the changes in urinary 3-methylhistidine (3-ME), urea-nitrogen (Urea-N) and creatinine (CR) in the initial period of weight training. The urinary excretion of 3-ME, Urea-N and CR over a 24-h period in nine human subjects was determined before and during (at one-day intervals) a weight training period of 11 days. Two periods of weight training at different work intensities were performed; experiment A (Exp. A) : three sets of 8 repetitions at 60% of maximal voluntary contraction (MVC) ; experiment B (Exp. B) : one set of 48 repetitions at 30% of MVC. Subjects in both Exp. A and Exp. B performed five kinds of weight lifting exercise (hyper extension, sit-up, bench press, leg curl, leg extension) every day during the weight training period.<BR>The main results obtained were as follows;<BR>1) Urine volume and urinary CR showed no clear changes in either Exp. A or Exp. B.<BR>2) In Exp. A, urinary 3-ME increased significantly, and Urea-N tended to decrease during the weight training period. On the other hand in Exp. B, urinary Urea-N tended to increase, but the fluctuation of urinary 3-ME showed no clear tendency during the weight training period.<BR>3) After the weight training period, girth of the chest, upper arm and thigh tended to be increased after Exp. A in comparison with those before the weight training period.<BR>These results suggest that whole-body protein catabolism in the initial period of weight training is dependent on the aim and type of weight training.

収録刊行物

  • 体力科学

    体力科学 41 (1), 89-97, 1992

    一般社団法人日本体力医学会

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