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Study on Effects of Shoch-Type Vibration on Peripheral Circulation in the Hand-Arm

Research Project

Project/Area Number 04454222
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 公衆衛生学
Research InstitutionKanazawa University

Principal Investigator

OKADA Akira  Kanazawa University, President, 学長 (10019573)

Co-Investigator(Kenkyū-buntansha) NAKAMURA Hiroyuki  Kanazawa University, Associate Professor, 医学部, 助教授 (30231476)
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥6,800,000 (Direct Cost: ¥6,800,000)
Fiscal Year 1993: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1992: ¥4,600,000 (Direct Cost: ¥4,600,000)
KeywordsVibration / Impulsiveness / Blood flow / Peripheral circulation / Grasping / ISO / Crest factor / Pneumatic tools / 複合影響 / crest factor / 未梢循環動態 / 労働環境 / 周波数分析
Research Abstract

Altough deteriorating effects of shock-type vibration on hand-arm have been pointed out, the international standard for hand-arm vibration exposure have not provided available information on shock-type vibration. Waves produced by the normal use of chain-saw, pneumatic hammer, pneumatic riveting hammer, and pneumatic nailer at workplaces was recorded and analyzed. The order of the size in the impulsiveness, crest factor (CF) was chain-saw, pneumatic hammer, pneumatic riveting hammer, and pneumatic nailer at a constant frequency-weighted rms acceleration at x direction (a_<xhw>) of 6.3 m/s^2. No statistically significant effects of shock was recognized in comparisons of subjective response to shock-type vibration with that to shockless vibration of shain-saw. Effects of shock on peripheral circulation was examined by monitoring finger skin blood flow induced by the shock-type vibration at a constant frequency-weighted rms acceleration at x direction (a_<xhw>) of 6.3 m/s^2. In a result, pneumatic nailer with the CF of 9.5 produced significant decreases in the blood flow at 4 and 5 min after the exposure. This result suggests that effects of vibration should be assessed including the size of the impulsiveness. Experiments examining effects of hand-grasping showed significant reduction in peripheral blood flow associated with the grasping. Tools with measures which protect vibration from transmitting into hand-arm easily with the growth of grasping force should be developed in future.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] Masami Yoshida,Hiroyuki Nakamura and Akira Okada: "Responses of plasma platelet-derived growth factor (PDGF) and endothelin to vibration exposure in chain-sawyers" NIOH Journal. (in print).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Hiroyuki Nakamura and Akira Okada: "Combined effects of hand-arm vibration and hand-grasping on local blood flow and plasma indicators" Arch.Complex Environ.Study.(in print).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Hiroyuki Nakamura and Akira Okada: "Comparisons of responses of plasma PDGF,tPA and endothelin to hand-arm vibration exposure between healthy and VWF workers" Proceeding of 6th International Conference on the Combined Effects of Environmental Factors. (in print).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Masami Yoshida, Hiroyuki Nakamura and Akira Okada: "Responses of plasma platelet-derived growth factor (PDGF) and endothelin to vibration exposure in chain-sawyers" NIOH Journal. (in print).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Hiroyuki Nakamura and Akira Okada: "Combined effects of hand-arm vibration and hand-grasping on local blood flow and plasma indicators" Arch.Complex Environ.Study. (in print).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Hiroyuki Nakamura and Akira Okada: "Comparisons of responses of plasma PDGF,tPA and endothelin to hand-arm vibration exposure between healthy and VWF workers" Proceeding 6th ICCEF. (in print).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary

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Published: 1992-04-01   Modified: 2016-04-21  

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