Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

An exploratory study of moderate physical activity and selected design attribute effects on earmuff attenuation.

Authors
Casali-JG; Grenell-JF
Source
Am Ind Hyg Assoc J 1989 Sep; 50(9):480-485
NIOSHTIC No.
00190607
Abstract
An exploratory study was conducted to investigate the effects of variations in earmuff design attributes of headband compression force and earcup cushion material, the effects of moderate work related physical activity over a 75 minute wearing period, and the relationship between the design attributes and the earmuff's susceptibility to attenuation loss caused by the physical activity. Twelve men and 12 women participated in the study. A real ear attenuation at threshold (REAT) testing procedure was used to collect attenuation data on the subjects prior to and following completion of a simulated work task. The findings indicate that moderate work related movement significantly decreased low frequency attenuation but by only about 1.5 decibels (dB) at 125 hertz (Hz). A high headband compression force increased the attenuation by about 1.5 to 4dB at 125, 250, 500, and 8000Hz. No significant differences were noted at any frequency between cushion types. The authors conclude that there was a small effect of moderate physical work activity on hearing protector effectiveness which illustrates the importance of certain earmuff design parameters to achieved attenuation.
Keywords
NIOSH-Publication; NIOSH-Grant; Noise-exposure; Industrial-noise; Hearing-protection; Personal-protective-equipment; Sound-attenuation; Humans; Physical-exercise; Ear-protectors
Contact
Indus Engr and Operations Res Virginia Polytechnic Institute Blacksburg, VA Blacksburg, VA 24061
CODEN
AIHAAP
Publication Date
19890901
Document Type
Journal Article
Funding Amount
107502.00
Funding Type
Grant
Fiscal Year
1989
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-002540
Issue of Publication
9
ISSN
0002-8894
Source Name
American Industrial Hygiene Association Journal
State
VA
Performing Organization
Virginia Polytechnic Inst and St Univ, Blacksburg, Virginia
TOP