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1997 Fiscal Year Final Research Report Summary

Effect of Habitual Exercise on Bone Mineral Density of Pubescent.

Research Project

Project/Area Number 07680132
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 体育学
Research InstitutionMiyazaki Municipal University

Principal Investigator

MIYAMOTO Shoji  Miyazaki Municipal University Department of International Cultural Science, Faculty of Humanity Assistant Professor, 人文学部・国際文化学科, 助教授 (90157678)

Project Period (FY) 1995 – 1997
Keywordsmenstrual period / bone mineral density / exercise / pubescent
Research Abstract

This study was conducted to clarify the effects of menstrual periods on bone formation in girl athletes during pubescent. The subjects were 13 girl athletes (aged13.4) and a control group consisting of 10 girls (aged 13.8). The menstrual cycles of the subjects were recorded for 3 months using information gathered from girls. The seven athletes who had menstrual periods every 26-31 days were classified as having regular menstrual periods. The other 6 who did not were classified as having irregular menstrual periods. In the control group, 5 girls had regular menstrual periods and 5 had irregular menstrual periods. Weight, fat ratio, non-fat non-bone mineral content ratio, bone mineral content (BMC) and the bone mineral density (BMD) near the thigh bone were measured at the beginning of the study and the third year. Eseragiol (E2) was measured 7 days after the beginning of menstrual periods. The results are as follows.
1)Looking at yearly changes in weight, fat ratio, non-fat non-BMC ratio and BMC in each group, the weight of those with regular menstrual periods increased significantly. Significant increases in weight and fat ratio were also seen in the control group. 2)The BMD of the control group was relatively lower than that of both the regular menstrual period group and irregular menstrual group after three years, though the difference was not significant. 3)Looking at yearly changes in the BMD near the thigh bone, athletes tended to show increases over the years, while decreases were more prominent in the control group. 4)there was no apparent relation between E2 and BMD.

  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] 宮元 章次: "思春期の月経周期の規則性が骨密度に及ぼす影響" 九州スポーツ医・科学会誌. 10(印刷中). (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] MIYAMOTO S.: "What is the Minimum Age for Applying the Forbes Equation between Body Density and Body Fat to the Elderly?" Human Ergology. 25(2)(in press). (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 宮元 章次: "二重エネルギー吸収法からみた青年男女の身体組成" 秀巧社, 121 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shoji Miyamoto: "What is the minimum age for applying the Forbes equation between body density and body fat to the elderly?" Human Ergology. 25(2)(in press). (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shoji Miyamoto: "The effects of the regularity of menstrual periods during adolescence on bone mineral content" Kyusyu J.Phys.Fitness Sports Med.10(in press). (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] shoji Miyamoto: A study of adolescent body composition : the implementation of dual-energy X-ray absorptiometry. Shukousya, Fukuoka, (1996)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-16  

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