| The effect on the temporary threshold shift in hearing acuity from combined exposure to authentic noise and hand-arm vibration. | |
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MedLine Citation:
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PMID: 21499793 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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OBJECTIVES: This study examined and compared the effect on temporary threshold shift in hearing (TTS) in healthy subjects of noise and hand-arm vibration (HAV) combined and separately using controlled and authentic exposure conditions. This study also investigated the effect on TTS in hearing in relation to gender after such exposures. METHODS: Twenty-two healthy subjects (11 men/women, mean age 22 years, range 18-31 years) were exposed both separately and in combination with HAV (6.7 m/s(2)), using vibrating handles and to noise (99dB(A)) using headphones, for 20 min. The HAV and noise were reproduced from recordings from angular grinder in operation. Hearing thresholds at 1, 4, and 8 kHz were measured before and up to 30 min after exposure. RESULTS: Combined exposure to noise and HAV created significantly greater TTS in hearing than HAV exposure at 4 and 8 kHz alone. After exposure to HAV, there was no significant change in hearing threshold. At 1 kHz, there was a significant difference between noise and HAV exposure in TTS in hearing. There was no significant difference between combined exposure and noise exposure for any test frequency. There was no significant difference in TTS in hearing in relation to gender for 1, 4, and 8 kHz for HAV, noise, or a combined exposure. CONCLUSIONS: The results indicate that there is no difference in the TTS in hearing after combined exposure compared to noise exposure alone. HAV exposure did not change the hearing threshold. The TTS in hearing did not differ significantly in relation to gender after HAV, noise, or combined exposure. |
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Authors:
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Hans Pettersson; Lage Burström; Tohr Nilsson |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-4-16 |
Journal Detail:
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Title: International archives of occupational and environmental health Volume: - ISSN: 1432-1246 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-4-18 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7512134 Medline TA: Int Arch Occup Environ Health Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine, Umeå University, 901 87, Umeå, Sweden, hans.pettersson@envmed.umu.se. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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