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EFFECTS OF IMPACT-LOADING ON BONE MASS AND STRENGTH IN OVARIECTOMIZED RATS

Research Project

Project/Area Number 11680062
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 体育学
Research InstitutionCHUKYO UNIVERSITY

Principal Investigator

UMEMURA Yoshihisa  CHUKYO UNIVERSITY, SCHOOL OF HEALTH AND SPORT SCIENCES, PROFESSOR, 体育学部, 教授 (00193946)

Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2000: ¥900,000 (Direct Cost: ¥900,000)
KeywordsBONE MASS / BONE STRENGTH / MECHANICAL STRESS / JUMP EXERCISE / OVARIECTOMY / OSTEOCALCIN / ICTP / EXERCISE FREQUENCY / 骨重
Research Abstract

The first study was designed to investigate the effect of high-impact and low-repetition jump exercise on bones in ovariectomized rats. Forty female Wistar rats were sham-operated (Sham) or ovariectomized (OVX) at the age of 11 weeks. The rats were randomly divided into the following 4 groups ; Sham-Sedentary (SS, n=10), Sham-Exercised (SE, n=10), OVX-Sedentary (OS, n=10), and OVX-Exercised (OE, n=10). The rats started the jump-training at the age of 12 weeks. The jump-training protocol was 10 times/day, 5 days/week and the jumping height was 40 cm. After 8 weeks of training, the mass and breaking force in the tibia and ulna, cross-sectional areas of diaphysis in the tibia and serum bone turnover markers were measured. The jump-training significantly increased the fat-free dry weight, ash weight and ultimate breaking force in the tibia. The rate of increase in these parameters was similar in both the Sham and OVX groups. On the other hand, in the ulna, there were no significant changes in the ultimate breaking force. The jump-training significantly increased the periosteal perimeter and cortical area, though the increase in these parameters in OE compared to OS was lower than that in SE compared to SS.The jump-training significantly increased serum osteocalcin in the OVX groups, as well as in the Sham groups.
The second study was focused on exercise frequency in one week to increase bone mass and strength in ovariectomized rats. The experimental protocol was like as the first study. Jump exercise with only one times/week increased bone mass and strength in ovariectomized rats, though did not increase cross-sectional cortical area of diaphysis. These results suggest that high-impact and low-repetition training had beneficial effects on bone formation and bone biomechanical properties in OVX rats, as well as in Sham rats.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Akiko Honda: "Effect of High-impact and Low-repetition Training on Bones in Ovariectomized rats."Journal of Bone and Mineral Research. 16(In Press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 梅村義久: "1回および2回のジャンプトレーニングがラットの骨量・強度に及ぼす影響."中京大学体育研究所紀要. 15. 47-49 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 長澤省吾: "ラットのジャンプトレーニングにおけるジャンプ時の床反力と骨強度および骨重量との関係"中京大学体育学論叢. 42(印刷中). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y Kodama: "Exercise and Mechanical Loading Increase Periosteal Bone Formation and Whole Bone Strength in C57BL/6J Mice but Not in C3H/Hej Mice."Calcified Tissue International. 66. 298-306 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 柴田優子: "9人制バレーボール選手のポジション別骨密度"Health Sciences. 15. 169-176 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 梅村義久: "バレーボール選手の脱トレーニングに伴う骨密度の変化"Health Sciences. 15. 161-168 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 梅村義久: "骨重量・骨強度を高めるジャンプトレーニング"バイオメカニクス研究. 3. 160-162 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] A Honda, Y Umemura, S Nagasawa: "Effect of High-impact and Low-repetition Training on Bones in Ovariectomized Rats."Journal of Bone and Mineral Research. 16 (in press).. (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y Umemura, S Nagasawa, A Honda: "Effect of One or Two Bouts of Jump Exercise on Bone Mass and Breaking Force in Rats."Bulletin of Research Institute of Physical Education. 15. 47-49 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] S Nagasawa, Y Umemura: "Relationship Between Ground Reaction Force and Bone Hypertrophy in Rats Performing a Jumping Exercise."Research Journal of Physical Education, Chukyo University. 42 (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y Kodama, Y Umemura, S Nagasawa, WG Beamer, LR Donahue, CR Rosen, DJ Baylink, JR Farley: "Exercise and Mechanical Loading Increase Periosteal Bone Formation and Whole Bone Strength in C57BL/6J Mice but Not in C3H/Hej Mice."Calcif Tissue Int. 66. 298-306 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y Shibata, Y Umemura, K Kitagawa, Y Takanashi, T Miura, A Araki: "Differences in Bone Mineral Density due to the Position of Women Volleyball Players"Health Sciences. 15. 169-176 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y Umemura, Y Takanashi, K Sakurai, H Koiso, Y Shibata, A Ishikawa: "Influences of Detraining on Bone Mineral Densities in Volleyball Players."Health Sciences. 15. 161-168 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y Umemura: "Jump Exercise Increases Bone Mass and Strength in Rats."Japanese Journal of Biomechanics in Sports and Exercise.. 3. 160-162 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary

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Published: 2000-04-01   Modified: 2016-04-21  

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