The effects of noise exposure and work-related fatigue on the acceptable noise level test in normal-hearing people
Background and Aim: The acceptable noise level (ANL) assesses the noise that a person can tolerate during a running speech. Although it is a strong test, it has not yet become popular in clinical practice. One of the reasons is its contradictory results. Since it is a psychoacoustic test, psychologi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Tehran University of Medical Sciences
2021-02-01
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| Series: | Auditory and Vestibular Research |
| Subjects: | |
| Online Access: | https://avr.tums.ac.ir/index.php/avr/article/view/893 |
| _version_ | 1798028168969322496 |
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| author | Nafiseh Heidari Ahmad Geshani Nematollah Rouhbakhsh Elham Faghihzadeh Mohammad Alishahi |
| author_facet | Nafiseh Heidari Ahmad Geshani Nematollah Rouhbakhsh Elham Faghihzadeh Mohammad Alishahi |
| author_sort | Nafiseh Heidari |
| collection | DOAJ |
| description | Background and Aim: The acceptable noise level (ANL) assesses the noise that a person can tolerate during a running speech. Although it is a strong test, it has not yet become popular in clinical practice. One of the reasons is its contradictory results. Since it is a psychoacoustic test, psychological factors can affect its output. Investigation of these factors can provide more accurate results. This study aims to investigate the effects of noise and work-related fatigue on the ANL in normal-hearing people.
Methods: Participants were the male workers in the administration (n = 26) and production (n = 26) departments of an automotive manufacturing industry in Iran. They were evaluated before and after leaving the workplace in order to determine the effects of noise exposure, fatigue as well as their simultaneous effects on the ANL.
Results: In both groups, the ANL showed a significant increase after work compared to its level before work, and the background noise level (BNL) was significantly decreased. There was no significant difference in the BNL between administration and production groups before work. The most comfortable level (MCL) showed no significant increase. Moreover, the MCL changes were not significantly different in the production group compared to administration group, but the BNL and ANL changes were significantly higher.
Conclusion: Noise exposure and work-related fatigue affect the ANL. During the ANL test, earlier exposure to noise and the amount of fatigue should be controlled. |
| first_indexed | 2024-04-11T19:03:22Z |
| format | Article |
| id | doaj.art-d57b7c1af70d46839bcd5a99042fcf65 |
| institution | Directory Open Access Journal |
| issn | 2423-480X |
| language | English |
| last_indexed | 2024-04-11T19:03:22Z |
| publishDate | 2021-02-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | Auditory and Vestibular Research |
| spelling | doaj.art-d57b7c1af70d46839bcd5a99042fcf652022-12-22T04:07:53ZengTehran University of Medical SciencesAuditory and Vestibular Research2423-480X2021-02-0130210.18502/avr.v30i2.6093893The effects of noise exposure and work-related fatigue on the acceptable noise level test in normal-hearing peopleNafiseh Heidari0Ahmad Geshani1Nematollah Rouhbakhsh2Elham Faghihzadeh3Mohammad Alishahi4Department of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, IranDepartment of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran AND Department of Audiology, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, IranDepartment of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, IranDepartment of Biological Statistics and Epidemiology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, IranDepartment of Occupational Medicine, Iran Khodro Company, Tehran, IranBackground and Aim: The acceptable noise level (ANL) assesses the noise that a person can tolerate during a running speech. Although it is a strong test, it has not yet become popular in clinical practice. One of the reasons is its contradictory results. Since it is a psychoacoustic test, psychological factors can affect its output. Investigation of these factors can provide more accurate results. This study aims to investigate the effects of noise and work-related fatigue on the ANL in normal-hearing people. Methods: Participants were the male workers in the administration (n = 26) and production (n = 26) departments of an automotive manufacturing industry in Iran. They were evaluated before and after leaving the workplace in order to determine the effects of noise exposure, fatigue as well as their simultaneous effects on the ANL. Results: In both groups, the ANL showed a significant increase after work compared to its level before work, and the background noise level (BNL) was significantly decreased. There was no significant difference in the BNL between administration and production groups before work. The most comfortable level (MCL) showed no significant increase. Moreover, the MCL changes were not significantly different in the production group compared to administration group, but the BNL and ANL changes were significantly higher. Conclusion: Noise exposure and work-related fatigue affect the ANL. During the ANL test, earlier exposure to noise and the amount of fatigue should be controlled.https://avr.tums.ac.ir/index.php/avr/article/view/893Exposure to noisefatigueacceptable noise level |
| spellingShingle | Nafiseh Heidari Ahmad Geshani Nematollah Rouhbakhsh Elham Faghihzadeh Mohammad Alishahi The effects of noise exposure and work-related fatigue on the acceptable noise level test in normal-hearing people Auditory and Vestibular Research Exposure to noise fatigue acceptable noise level |
| title | The effects of noise exposure and work-related fatigue on the acceptable noise level test in normal-hearing people |
| title_full | The effects of noise exposure and work-related fatigue on the acceptable noise level test in normal-hearing people |
| title_fullStr | The effects of noise exposure and work-related fatigue on the acceptable noise level test in normal-hearing people |
| title_full_unstemmed | The effects of noise exposure and work-related fatigue on the acceptable noise level test in normal-hearing people |
| title_short | The effects of noise exposure and work-related fatigue on the acceptable noise level test in normal-hearing people |
| title_sort | effects of noise exposure and work related fatigue on the acceptable noise level test in normal hearing people |
| topic | Exposure to noise fatigue acceptable noise level |
| url | https://avr.tums.ac.ir/index.php/avr/article/view/893 |
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