• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Adaptation of bone to exercise assessed by MRI.

Research Project

Project/Area Number 15300218
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Sports science
Research InstitutionUniversity of Tsukuba

Principal Investigator

TOKUYAMA Kumpei  University of Tsukuba, Graduate School of Comprehensive Human Science, Associate Professor, 大学院・人間総合科学研究科, 助教授 (00207565)

Co-Investigator(Kenkyū-buntansha) MUKAI Naoki  University of Tsukuba, Graduate School of Comprehensive Human Science, Associate Professor, 大学院・人間総合科学研究科, 助教授 (70292539)
FUJII Norihisa  University of Tsukuba, Graduate School of Comprehensive Human Science, Associate Professor, 大学院・人間総合科学研究科, 助教授 (10261786)
KOSE Katsumi  University of Tsukuba, Graduate School of Pure and Applied Sciences, Professor, 大学院・数理物質科学研究科, 教授 (60186690)
Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥11,600,000 (Direct Cost: ¥11,600,000)
Fiscal Year 2004: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 2003: ¥8,800,000 (Direct Cost: ¥8,800,000)
KeywordsBone Strength / Bone Structure / Jump / Cortical Bone / MRI / Ultra Sound / Dual Energy X-Ray Absorptiometry / DXA / pQCT / DEXA / トレーニング
Research Abstract

Exercise has been proposed as one strategy for improving or maintaining the structural competence of bone. In contrast with previous densitometric analysis using dual energy x-ray absorptioometry (DXA) which reported that areal bone mineral density (a BMD ; bone mineral content per projected area) increased with exercise, the studies using peripheral quantitative computed tomography (pQCT) revealed that an improvement in mechanical properties of adult bone in response to exercise is related to negative changes in volumetric BMD (vBMU ; bone mineral content in a unit volume). Furthermore, pQCT studies showed that periosteal area and cortical area were significantly greater in trained bone, together with an increase in cortical thickness. Thus the improvement in the mechanical properties of bone in response to long-term physical exercise is related to geometric adaptation and not vBMD. Due to radiation, pQCT studies were limited to selected slices of bone and whole bone structure of human has not been studied. In the present study, whole bone structure of tibia and calcaneus of athletes was analyzed by MRI. Furthermore, mechanical properties of the bone were simulated in silico.

Report

(3 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • Research Products

    (8 results)

All 2005 2004 2003 Other

All Journal Article (7 results) Publications (1 results)

  • [Journal Article] If exercise does not increase bone mineral density, what does it change?2005

    • Author(s)
      Liu, L.J., K.Tokuyama
    • Journal Title

      Japanese Journal of Physical Fitness and Sports Medicine. 54

      Pages: 79-86

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] If exercise does not increase bone mineral density, what does it change?2005

    • Author(s)
      Liu, L.J., K.Tokuyama.
    • Journal Title

      Japanese Journal of Physical Fitness and Sports Medicine. 54

      Pages: 79-86

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 躍選手の脛骨の形態と骨強度:骨幹部断面の重心を中心とする64方向についてのpQCT解析2004

    • Author(s)
      高野純平, 藤井範久, 向井直樹, 劉莉荊, 林和彦, 白崎芳夫, 斉藤慎一, 徳山薫平
    • Journal Title

      体力科学 53

      Pages: 123-130

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Jumper's tibia assessed along 64 directions centering center of Gravity of the bone by pQCT.2004

    • Author(s)
      Takano, J., N.Fujii, N.Mukai, L.Liu, K.Hayashi, Y.Shirasaki, S.Saito, K.Tokuyama.
    • Journal Title

      Jpn.J.Phys.Fitness Sports Med. 53

      Pages: 123-130

    • NAID

      110001915245

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 跳曜選手の脛骨の形態と骨強度:骨幹部断面の重心を中心とする64方向についてのpQCT解析2004

    • Author(s)
      高野純平, 藤井範久, 向井直樹, 劉莉荊, 林和彦, 白崎芳夫, 斉藤慎一, 徳山薫平
    • Journal Title

      体力科学 53

      Pages: 123-130

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Effects of physical training on cortical bone at mid tibia assessed by pQCT.2003

    • Author(s)
      Liu L., R.Maruno, T.Mashimo, K.Sanka, T.Higuchi, K.Hayashi, Y.Shirasaki, N.Mukai, S.Saitoh, K.Tokuyama
    • Journal Title

      J.Appl.Physiol. 95

      Pages: 219-224

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Effects of physical training on cortical bone at mid tibia assessed by pQCT.2003

    • Author(s)
      Liu L., R.Maruno, T.Mashimo, K.Sanka, T.Higuchi, K.Hayashi, Y.Shirasaki, N.Mukai, S.Saitoh, K.Tokuyama.
    • Journal Title

      J.Appl.Physiol. 95

      Pages: 219-224

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] 高野純平 他7名: "跳躍選手の脛骨の形態と骨強度:骨幹部断面の重心を中心とする64方向についてのpQCT解析"体力科学. 53. 123-130 (2004)

    • Related Report
      2003 Annual Research Report

URL: 

Published: 2003-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi