Improvements in Sound Attenuation Performance with Earplugs Following Checklist-based Self-practice

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  • TAKAHASHI Koko
    Department of Health Policy and Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health
  • KAWANAMI Shoko
    Department of Health Policy and Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health
  • INOUE Jinro
    Department of Health Policy and Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health
  • HORIE Seichi
    Department of Health Policy and Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health

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Other Title
  • チェックリストを用いた自己練習による耳栓の遮音値の改善

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Abstract

The hearing protectors most often used in noisy workplaces are earplugs. The sound attenuation performance of earplugs depends in part on the user's skill and knowledge. This study sought to clarify whether individual training and self-practice based on a checklist can improve sound attenuation. Measurements were performed as follows: Ten subjects, including both men and women, were provided with semi-insert earplugs (E-A-R flex 350-1001) and wore them based only on the printed instructions of the product. Sound attenuation was measured from 125Hz to 8000Hz, in accordance with JIS T8161-1983. Intervention was provided through 5 minute individual training with oral and written instructions, followed by 10 minute self-practice each day for 7 days. Sound attenuation was then measured once again. The results indicated significantly improved attenuation, ranging from 7.7dB to 11.7dB, in all frequencies following training, confirming the effectiveness of the intervention. This is an easy and effective method for training workers in how to wear earplugs most effectively.

Journal

  • Journal of UOEH

    Journal of UOEH 33 (4), 271-282, 2011

    The University of Occupational and Environmental Health, Japan

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