The noise spectrum influence on Noise-Induced Hearing Loss prevalence in workers

Boger, Marlene Escher; Barbosa-Branco, Anadergh; Ottoni, Áurea Canha

doi:10.1016/s1808-8694(15)30646-7

Cited by 14 publications

(16 citation statements)

References 8 publications

(5 reference statements)

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“…Studying the influence of noise on hearing loss, Boger et al (2009) observed that the use of PPE is not totally effective, since the workers under study developed some auditory damage even with the use of hearing dampers. So, independent of the PPE use, a fatigue recovery time value equivalent to 5% of the working day for workers exposed to noise levels between 86 and 95 dB(A) should be attributed.…”

Section: Resultsmentioning

confidence: 99%

Analysis of Noise Transmitted to Workers in Motor-Manual Forest Harvesting in Minas Gerais State

Billo¹,

Mendes²,

Nascimento³

et al. 2019

Floresta Ambient.

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Noise can entail irreversible damage to the health of workers exposed to this factor. Thus, this work aimed to evaluate noise levels emitted by chainsaws during forest cutting activity. Noise measurements were performed with dosimeters on the workstation and compared to NR15. The noise dose average of all activities in the operation studied exceeded the maximum allowable limit of 85 dB(A) for 8 hours of continuous work, exposing operators to noise levels that may cause health and physical damages. The most critical situation occurred on felling activity, evidencing the lack of acting in the chainsaws designs aiming to reduce noise levels. The results highlight the requirement to use PPE's suitable for activities, such as hearing dampers, and point to the need to develop research and new equipment with less noisy sources that aim at maintaining the health of the harvesting operators.Word keys: forestry techniques and operations; ergonomics; occupational health; forest cutting.

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Section: Resultsmentioning

confidence: 99%

Analysis of Noise Transmitted to Workers in Motor-Manual Forest Harvesting in Minas Gerais State

Billo¹,

Mendes²,

Nascimento³

et al. 2019

Floresta Ambient.

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“…This disease is characterized by gradual hearing loss, as a result of continuous exposition to high levels of sound pressure, damaging external and internal ciliated cells in the organ of Corti. 1 2 Considering duration, frequency, intensity, and individual susceptibility, exposure to high levels of sound pressure is a major risk to hearing and can lead to several consequences to the body. 3…”

Section: Introductionmentioning

confidence: 99%

Study of the Hearing Threshold of Dance Teachers

Nehring

Bauer

Teixeira

2015

Int Arch Otorhinolaryngol

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Introduction High sound pressure levels can cause hearing loss, beginning at high frequencies. Objective To analyze the hearing thresholds of dance teachers. Methods This study had a cross-sectional, observational, prospective, and descriptive design. Conventional and high-frequency hearing evaluations were performed with dance teachers and subjects in the control group. Results In all, 64 individuals were assessed, 32 in the research group and 32 in the control group. Results showed that individuals in the research group had hearing loss at frequencies between 4 and 8 kHz, but no significant difference was found between groups. Frequency analysis showed that individuals in the control group had higher thresholds than individuals in the research group at the frequency of 0.25 kHz. In the control group, men showed higher thresholds than women at the frequency of 9 kHz. Conclusion A low prevalence of hearing loss was found, with no difference between teachers and subjects from the control group. No difference was found for hearing thresholds at high frequencies between groups. Results have been partially affected by sex.

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“…According to environmental evaluation, there were observed differences between the noise spectrums in the environment. In the metallurgical company, the 8,000 Hz frequency band showed the most intense white noise level (85.5 dB HL), in the timber frame company, the prevailing frequency band was 2,000 Hz with noise level of 80.5 dB (HL), and in the marble manufacturer company, the prevailing frequency band was 4,000 Hz with white noise level of 79.3 dB (HL) [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Audiogram Comparison of Workers from Five Professional Categories

Duarte

Guimarães

Carvalho

et al. 2015

BioMed Research International

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Introduction. Noise is a major cause of health disorders in workers and has unique importance in the auditory analysis of people exposed to it. The purpose of this study is to evaluate the arithmetic mean of the auditory thresholds at frequencies of 3, 4, and 6 kHz of workers from five professional categories exposed to occupational noise. Methods. We propose a retrospective cross-sectional cohort study to analyze 2.140 audiograms from seven companies having five sectors of activity: one footwear company, one beverage company, two ceramics companies, two metallurgical companies, and two transport companies. Results. When we compared two categories, we noticed a significant difference only for cargo carriers in comparison to the remaining categories. In all activity sectors, the left ear presented the worst values, except for the footwear professionals (P > 0.05). We observed an association between the noise exposure time and the reduction of audiometric values for both ears. Significant differences existed for cargo carriers in relation to other groups. This evidence may be attributed to different forms of exposure. A slow and progressive deterioration appeared as the exposure time increased.

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The noise spectrum influence on Noise-Induced Hearing Loss prevalence in workers

Abstract: Noise intensity seems to be the main risk factor for loss hearing, regardless of frequency range.

Cited by 14 publications

References 8 publications

Analysis of Noise Transmitted to Workers in Motor-Manual Forest Harvesting in Minas Gerais State

Analysis of Noise Transmitted to Workers in Motor-Manual Forest Harvesting in Minas Gerais State

Study of the Hearing Threshold of Dance Teachers

Audiogram Comparison of Workers from Five Professional Categories

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