Analyses on the E-A-R Foam Earplug for the Dynamic Work Activity Experiment

Details

• Personal Author:
  Casali JG ; Park Y
• Description:
  A controlled laboratory experiment was conducted to investigate the effects of different levels of subject fit, wearing time, and subject movement activity, on the frequency specific attenuation achieved with particular slow recovery foam earplugs. A psychophysical real ear attenuation at threshold testing procedure was used to collect attenuation data from ten subjects at nine test frequencies. While prior research suggested that attenuation may decrease over time with aural inserts, these compliant inserts were stable in the face of vigorous temporomandibular and highly kinetic bodily activity, thus exhibiting negligible degradation in attenuation over time. Improvements in attenuation provided by trained subject fit versus naive subject fit of the earplugs were large at 1000 hertz (Hz) and below, ranging from gains of 12 to 14 decibels (dB). The gains were smaller, but still statistically at 2000 to 8000Hz, ranging from 3 to 5dB. [Description provided by NIOSH]
• Subjects:
  Ear Hearing Loss Hearing Loss, Noise-Induced Occupational Health Personal Protective Equipment Protective Clothing Safety Sense Organs
• Keywords:
  Ear-protectors Hearing-impairment Hearing-protection NIOSH-Grant Noise-induced-hearing-loss Personal-protective-equipment
• Series:
  Grant Final Reports
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Final Grant Report
• Place as Subject:
  OSHA Region 3 ; Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  OEP - Office of Extramural Programs
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-32
• NIOSHTIC Number:
  nn:00201857
• NTIS Accession Number:
  PB92-124015
• Citation:
  Department of Industrial Engineering and Operations Research, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 1990 Jan; :1-32
• Contact Point Address:
  Indus Engr and Operations Res Virginia Polytechnic Institute Blacksburg, VA Blacksburg, VA 24061
• Federal Fiscal Year:
  1990
• NORA Priority Area:
  Disease and Injury: Hearing Loss ; Research Tools and Approaches: Control Technology and Personal Protective Equipment
• Performing Organization:
  Virginia Polytechnic Inst and St Univ, Blacksburg, Virginia
• Peer Reviewed:
  False
• Start Date:
  19880516
• Source Full Name:
  Department of Industrial Engineering and Operations Research, Virginia Polytechnic Institute and State University, Blacksburg, Virginia
• End Date:
  19900815
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:aace80532fa4612691922f000bbcfe3296b6cbeab434d1d44d4e9e32a8244f15d2d6cc66d8ff13afdad4fba695a719d4b76271dda28d0524f08119c1793e4eee
• Download URL:
  https://stacks.cdc.gov/view/cdc/217809/cdc_217809_DS1.pdf
• File Type:
  [PDF - 744.98 KB ]