scholarly journals Noise Exposure and Hearing Threshold Profile among Zumba Fitness Regulars in Kuantan, Pahang, Malaysia

2020 ◽  
Vol 19 (2) ◽  
Author(s):  
Razali A ◽  
Othman MS ◽  
Rahman MS ◽  
Misaridin NFI
Keyword(s):  
Hearing Loss ◽  
Noise Exposure ◽  
Hearing Threshold ◽  
Sound Level ◽  
Hearing Level ◽  
Noise Induced Hearing Loss ◽  
Loud Noise ◽  
Abnormal Pattern ◽  
Level Meter ◽  
Hearing System

INTRODUCTION: Recreational noise exposure has become a major threat to the hearing system, and this includes exposure to loud noise during group exercises such as Zumba Fitness, where loud music plays an important role. This study aimed to assess the noise exposure and hearing threshold profile among Zumba Fitness regulars in Kuantan, Malaysia. MATERIALS AND METHODS: Noise exposure and hearing profile threshold were measured during Zumba Fitness sessions at a fitness studio in Kuantan, Malaysia from 24th June 2014 to 12th August 2014. Noise exposure was measured using a noise dosimeter for one hour of Zumba Fitness session with a total of nine sessions run by three different instructors while sound level pressure was taken using a sound level meter during ambient, peak session and during cooling down. Thirty participants answered questionnaires and underwent pure tone diagnostic audiometry test at a local clinic for hearing threshold documentation. RESULTS: Some areas of the hall posed higher risks of causing noise-induced hearing loss especially near the amplifiers. There were periods when the hearing level exceeded 115 dBA. Early abnormal pattern could be observed in the hearing profiles of some of the participants to suggest preliminary hearing problems. CONCLUSION: Zumba Fitness regulars have a risk of developing noise-induced hearing loss and preventive steps should be properly addressed as NIHL is permanent and irreversible.

scholarly journals Prevalence of Hearing Loss in Military Aviators: The Audiometry and Risk Factors Analysis

2014 ◽  
Vol 9 (1) ◽  
pp. 19-24
Author(s):  
MR Alam ◽  
MA Wahab ◽  
MM Rahman ◽  
AKM Asaduzzaman ◽  
MAS Al-Azad ◽  
...  
Keyword(s):  
Risk Factors ◽  
Hearing Loss ◽  
Noise Exposure ◽  
Health Hazard ◽  
Hearing Threshold ◽  
Armed Forces ◽  
Cross Sectional Study ◽  
Noise Induced Hearing Loss ◽  
Cross Sectional ◽  
Medical Checkup

Introduction: Noise Induced Hearing Loss (NIHL) is an occupational health hazard linked with noise exposure of more than 85 dB. Aircraft noise and other occupational noise exposure cause military aviators more susceptible to NIHL than commercial jet pilots. Aim: To find out the prevalence of noise induced hearing loss among different military aircrew population with special emphasis on identifying the associated risk factors. Materials and Methods: This cross sectional study was conducted on Kuwait Air force pilots those who came for annual medical checkup from July 2010 to July 2012. Audiometry of all subjects was done by ENT specialist and necessary data were collected by structured questionnaires. All data were analyzed by SPSS (Statistical Package for the Social Sciences) version 17.0 Results: Out of 221 aircrew 32 (14.48%) developed NIHL. Hearing loss was mild to moderate and predominately at high frequencies. Most affected group was helicopter pilots. Pilots of more than 40 years of age and those who had more than 1000 flying hours had mean hearing threshold more than other groups. The right ear was affected in majority of cases than left ear. Conclusion: Noise exposure to aircrew is inevitable so hearing loss prevention strategies might play a pivotal role to save aircrew hearing. Active surveillance of hearing protection practices might have beneficiary effect. Steps can be taken for early detection of NIHL and hearing conservation program. DOI: http://dx.doi.org/10.3329/jafmc.v9i1.18721 Journal of Armed Forces Medical College Bangladesh Vol.9(1) 2013: 19-24

Hazard of Noise Induced Hearing Loss (NIHL) among Operators of Music Recording/Retail Centres in Nigeria

2005 ◽  
Vol 36 (2) ◽  
pp. 17-20 ◽  
Author(s):  
Foluwasayo E. Ologe ◽  
Emmanuel O. Okoro ◽  
Tanimola M. Akande
Keyword(s):  
Hearing Loss ◽  
Noise Exposure ◽  
Simple Random Sampling ◽  
Sound Level ◽  
Sound Level Meter ◽  
Protection Measures ◽  
Young Males ◽  
Work Related ◽  
Music Recording ◽  
Level Meter

We studied the level of music loudness to which operators of music recording/retail centre were exposed in order to determine their risk of work-related hearing loss. A survey of consenting operators of music recording centres on six main streets selected by simple random sampling at different locations of the town was carried out using a structured questionnaire. The sound level of the music from the music player speakers in each centre was measured using a sound level meter (Testo 815) duly calibrated with a sound level meter calibrator (Testo 0554.0009). Results were analyzed by simple descriptive statistics. The study involved 79 mainly male young adults aged 27.7 ± 6.8 years (SD). The measured sound levels in the centres ranged from 86-104dBA; with a mean of 96 ± 2.5dBA(SD). Exposure to this music loudness was for an average of 9 hours daily for an employment period averaging about 5 years. Thirty percent of the study population reduced music loudness by turning down the volume; 6.3% sat at six or more metres from the speakers; 10% used ear plugs occasionally and 7.6% had hearing assessment at some stage prior to the present study. The level of noise exposure of this population of young males is in excess of the threshold associated with irreversible hearing loss, and protection measures were less than optimal.

Noise-Induced Hearing Loss in Professional Orchestral Musicians

2013 ◽  
Vol 38 (2) ◽  
pp. 223-234 ◽  
Author(s):  
Małgorzata Pawlaczyk-Łuszczyńska ◽  
Małgorzata Zamojska ◽  
Adam Dudarewicz ◽  
Kamil Zaborowski
Keyword(s):  
Hearing Loss ◽  
High Frequency ◽  
Noise Exposure ◽  
Hearing Threshold ◽  
Noise Induced Hearing Loss ◽  
Occupational Risk Factors ◽  
Threshold Levels ◽  
Exposed Population ◽  
Orchestral Musicians ◽  
The Impact

Abstract The overall purpose of this study was to assess hearing status in professional orchestral musicians. Standard pure-tone audiometry (PTA) and transient-evoked otoacoustic emissions (TEOAEs) were per- formed in 126 orchestral musicians. Occupational and non-occupational risk factors for noise-induced hearing loss (NIHL) were identified in questionnaire inquiry. Data on sound pressure levels produced by various groups of instruments were also collected and analyzed. Measured hearing threshold levels (HTLs) were compared with the theoretical predictions calculated according to ISO 1999 (1990). Musicians were exposed to excessive sound at weekly noise exposure levels of for 81-100 dB (mean: 86.6±4.0 dB) for 5-48 years (mean: 24.0±10.7 years). Most of them (95%) had hearing corresponds to grade 0 of hearing impairment (mean hearing threshold level at 500, 1000, 2000 and 4000 Hz lower than 25 dB). However, high frequency notched audiograms typical for noise-induced hearing loss were found in 35% of cases. Simultaneously, about 35% of audiograms showed typical for NIHL high frequency notches (mainly occurring at 6000 Hz). When analyzing the impact of age, gender and noise exposure on hearing test results both PTA and TEOAE consistently showed better hearing in females vs. males, younger vs. older musicians. But higher exposure to orchestral noise was not associated with poorer hearing tests results. The musician’s audiometric hearing threshold levels were poorer than equivalent non-noise-exposed population and better (at 3000 and 4000 Hz) than expected for noise-exposed population according to ISO 1999 (1990). Thus, music impairs hearing of orchestral musicians, but less than expected from noise exposure.

scholarly journals Prevalance of Noise Induced Hearing Loss among Traffic Police Personnel of Kathmandu Metropolitan City

2012 ◽  
Vol 9 (4) ◽  
pp. 274-278 ◽  
Author(s):  
I Shrestha ◽  
B L Shrestha ◽  
M Pokharel ◽  
R C M Amatya ◽  
D R Karki
Keyword(s):  
Hearing Loss ◽  
Noise Exposure ◽  
Positive Impact ◽  
Hearing Threshold ◽  
Pure Tone Audiometry ◽  
University Hospital ◽  
P Value ◽  
Noise Induced Hearing Loss ◽  
Traffic Police ◽  
Police Personnel

Background Noise induced hearing loss (NIHL) is a major preventable occupational health hazard. Objective To measure permanent threshold shift in traffic police personnel due to noise exposure and to examine whether it was associated with duration of noise exposure, years of work and risk factors. Methods Cross sectional, descriptive study conducted at Dhulikhel hospital, Kathmandu University Hospital in 110 responding traffic police personnel. Detailed history and clinical examination of ear, impedence audiometry and pure tone audiometry was performed. Results Mean age group was 29.82 years; 82(74.5%) were males and 28 (25.5%) were females. Mean duration of service is 11.86 years. Twenty six (23.6%) had tinnitus and 39(35.5%) had blocked sensation in ear. Sixty five (59.1%) worked between 10-19 years. Alcohol and smoking shows positive impact on NIHL (p value =0.00). Odds ratio with 95% confidence interval were 4.481 (1.925-10.432) and 6.578 (2.306-18.764) respectively. Among 73(66.4%) noise induced hearing loss positive cases, bilateral involvement was seen in 45 (40.9%) and unilateral in 28(25.4 %) cases. Among unilateral cases most were left sided. Hearing threshold at 4 kHz increased according to age and duration of service. Conclusion Traffic police personnel are in constant risk of noise induced hearing loss. Screening for hearing loss is recommended for people exposed to noise.DOI: http://dx.doi.org/10.3126/kumj.v9i4.6343 Kathmandu Univ Med J 2011;9(4):274-8

scholarly journals Effect of Workplace Noise on Hearing Ability in Tile and Ceramic Industry Workers in Iran: A 2-Year Follow-Up Study

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Mehrdad Mostaghaci ◽  
Seyyed Jalil Mirmohammadi ◽  
Amir Houshang Mehrparvar ◽  
Maryam Bahaloo ◽  
Abolfazl Mollasadeghi ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Noise Exposure ◽  
Hearing Threshold ◽  
Threshold Shift ◽  
Noise Induced Hearing Loss ◽  
Follow Up Study ◽  
Hearing Ability ◽  
The Right ◽  
Ceramic Workers

Introduction. Noise as a common physical hazard may lead to noise-induced hearing loss, an irreversible but preventable disorder. Annual audiometric evaluations help detect changes in hearing status before clinically significant hearing loss develops. This study was designed to track hearing threshold changes during 2-year follow-up among tile and ceramic workers.Methods. This follow-up study was conducted on 555 workers (totally 1110 ears). Subjects were divided into four groups according to the level of noise exposure. Hearing threshold in conventional audiometric frequencies was measured and standard threshold shift was calculated for each ear.Results. Hearing threshold was increased during 2 years of follow-up. Increased hearing threshold was most frequently observed at 4000, 6000, and 3000 Hz. Standard threshold shift was observed in 13 (2.34%), 49 (8.83%), 22 (3.96%), and 63 (11.35%) subjects in the first and second years of follow-up in the right and left ears, respectively.Conclusions. This study has documented a high incidence of noise-induced hearing loss in tile and ceramic workers that would put stress on the importance of using hearing protection devices.

scholarly journals The Physiological Bases of Hidden Noise-Induced Hearing Loss: Protocol for a Functional Neuroimaging Study (Preprint)

2017 ◽  
Author(s):  
Rebecca Susan Dewey ◽  
Deborah A Hall ◽  
Hannah Guest ◽  
Garreth Prendergast ◽  
Christopher J Plack ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Noise Exposure ◽  
Functional Neuroimaging ◽  
Nerve Fibers ◽  
High Threshold ◽  
Hearing Level ◽  
Noise Induced Hearing Loss ◽  
Brainstem Response ◽  
Neuroimaging Study ◽  
Hidden Hearing Loss

BACKGROUND Rodent studies indicate that noise exposure can cause permanent damage to synapses between inner hair cells and high-threshold auditory nerve fibers, without permanently altering threshold sensitivity. These demonstrations of what is commonly known as hidden hearing loss have been confirmed in several rodent species, but the implications for human hearing are unclear. OBJECTIVE Our Medical Research Council–funded program aims to address this unanswered question, by investigating functional consequences of the damage to the human peripheral and central auditory nervous system that results from cumulative lifetime noise exposure. Behavioral and neuroimaging techniques are being used in a series of parallel studies aimed at detecting hidden hearing loss in humans. The planned neuroimaging study aims to (1) identify central auditory biomarkers associated with hidden hearing loss; (2) investigate whether there are any additive contributions from tinnitus or diminished sound tolerance, which are often comorbid with hearing problems; and (3) explore the relation between subcortical functional magnetic resonance imaging (fMRI) measures and the auditory brainstem response (ABR). METHODS Individuals aged 25 to 40 years with pure tone hearing thresholds ≤20 dB hearing level over the range 500 Hz to 8 kHz and no contraindications for MRI or signs of ear disease will be recruited into the study. Lifetime noise exposure will be estimated using an in-depth structured interview. Auditory responses throughout the central auditory system will be recorded using ABR and fMRI. Analyses will focus predominantly on correlations between lifetime noise exposure and auditory response characteristics. RESULTS This paper reports the study protocol. The funding was awarded in July 2013. Enrollment for the study described in this protocol commenced in February 2017 and was completed in December 2017. Results are expected in 2018. CONCLUSIONS This challenging and comprehensive study will have the potential to impact diagnostic procedures for hidden hearing loss, enabling early identification of noise-induced auditory damage via the detection of changes in central auditory processing. Consequently, this will generate the opportunity to give personalized advice regarding provision of ear defense and monitoring of further damage, thus reducing the incidence of noise-induced hearing loss.

scholarly journals Assessment of Hearing Loss among Workers in a Power Plant in Thailand

2019 ◽  
pp. 38-45
Author(s):  
Pensri Watchalayann ◽  
Laksana Laokiat
Keyword(s):  
Hearing Loss ◽  
Power Plant ◽  
Noise Exposure ◽  
Hearing Threshold ◽  
Working Environment ◽  
Control Measures ◽  
Exposure Level ◽  
Hearing Level ◽  
Work Characteristics ◽  
Significant Difference

Noise exposure in the working environment is a major cause of hearing impairment for workers; an audiogram hearing threshold level above 20 dB is considered irregular. In this study, audiometric data were analyzed with the objective of assessing hearing loss among power plant workers based on their age, noise exposure level, years of working, and work characteristics. A cross-sectional study was conducted to assess hearing level data for 672 workers reserved by the Health Care Unit of the power plant. The most recent audiometric data presented during 2013-2015 were used in the statistical analysis at 5 % level of significance. It was found that the most dominant frequency with reference to age and work experience is the test frequency at 4,000 Hz. The most prominent suffering significant hearing loss for both ears is the age group of 50-60 years, consistent with more than 35 years of working. The most significant exposure level is noise level at 81-84 dBA for the left ear only. The work characteristics were found to be the most significant factor affecting hearing loss in both ears. The t-test reveals no significant difference in hearing loss in both ears at all test frequencies. Hearing loss is found to occur at 4,000 and 6,000 Hz; therefore, there is a necessity to implement noise control measures specifically for each work group. Although there is an educational and training program in the power plant, all workers should still be educated continuously on how to use hearing protection equipment correctly to enhance awareness of the hazards of noise to hearing. Periodic audiometry should be performed to early detect noise-induced hearing loss specifically the notch occurring at 4,000 and 6,000 Hz, together with engineering control in order to reduce unwanted sound.

Vestibular-evoked myogenic potentials in chronic noise-induced hearing loss

2007 ◽  
Vol 137 (4) ◽  
pp. 607-611 ◽  
Author(s):  
Yen-Pin Wang ◽  
Yi-Ho Young
Keyword(s):  
Hearing Loss ◽  
Prospective Study ◽  
Noise Exposure ◽  
Hearing Threshold ◽  
Vestibular Evoked Myogenic Potentials ◽  
Noise Induced Hearing Loss ◽  
Vestibular Evoked Myogenic Potential ◽  
Myogenic Potential ◽  
Abnormal Rate ◽  
Sacculocollic Reflex

Objective To investigate the effect of chronic noise exposure on vestibular-evoked myogenic potentials. Study Design Prospective study. Subjects and Methods Twenty patients with chronic noise-induced hearing loss, presenting as bilateral notched audiogram at 4 kHz, underwent audiometry, caloric, and vestibular-evoked myogenic potential tests. Results Caloric and vestibular-evoked myogenic potential tests revealed abnormal responses in nine (45%) and 10 (50%) patients, respectively. However, when both results were considered together, the abnormal rate reached 70% (14 of 20). The hearing threshold of 4 kHz significantly associated with vestibular-evoked myogenic potential results (ie, vestibular-evoked myogenic potential was abnormal in patients with greater degrees of hearing loss), but not with caloric responses. Conclusion Patients with bilateral 4-kHz notched audiogram and hearing threshold of 4 kHz >40 dB may show abnormal (absent or delayed) vestibular-evoked myogenic potentials, indicating that the vestibular part, especially the sacculocollic reflex pathway, has also been damaged.

Audiological and noise exposure findings among members of a brazilian folklore music group

Work ◽  
2021 ◽  
pp. 1-7
Author(s):  
Carina Moreno Dias Carneiro Muniz ◽  
Sergio Fernando Saraiva da Silva ◽  
Rachel Costa Façanha ◽  
Daniela Bassi-Dibai ◽  
Fabricio Brito Silva ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Sound Pressure Level ◽  
High Frequency ◽  
Sound Pressure ◽  
Noise Exposure ◽  
Descriptive Study ◽  
Pressure Level ◽  
Noise Induced Hearing Loss ◽  
Loud Noise ◽  
Two Stages

BACKGROUND: Musicians and dancers can be considered an at-risk population for developing noise-induced hearing loss. OBJECTIVES: To determine the audiological profile of members of a folklore-related music group and quantify noise exposure at their rehearsal venue. METHODS: This was a quantitative and descriptive study. The musicians and dancers were evaluated in two stages: an interview about their working life, followed by high frequency tonal audiometry. The sound pressure level in the group’s rehearsal venue was measured using a BEK 2270 Noise Analyzer. RESULTS: A total of 7.2% of the subjects had noise-induced hearing loss (NIHL) and 39% of the audiometric tests were notch type. During the interview 31.7% of the subjects mentioned discomfort from loud noise, although none of them used ear protection. The environmental assessment showed inadequate humidity and oscillating temperature. Twenty sound pressure level measurements were performed for Leq (equivalent sound pressure levels) and the results ranged from 88 dB (A) to 99 dB (A) with a mean of 97.05. CONCLUSIONS: Exposure to high levels of sound pressure has led to NIHL in some members of the group. Some of those with normal hearing also presented a notch configuration characteristic of NIHL. Tinnitus, indicating that a change in hearing has occurred, was the most frequent auditory symptom.

scholarly journals Studi Kualitatif Gangguan Pendengaran Akibat Bising / Noise Induced Hearing Loss (NIHL) Pada Marshaller Di Bandar Udara Sultan Thaha Kota Jambi Tahun 2020

2021 ◽  
Vol 5 (1) ◽  
pp. 41-53
Author(s):  
Bella Armia Putri ◽  
Rd. Halim ◽  
Helmi Suryani Nasution
Keyword(s):  
Hearing Loss ◽  
Sound Level ◽  
Noise Induced Hearing Loss ◽  
Sound Level Meter ◽  
Level Meter

Kebisingan merupakan salah satu sumber penyebab terjadinya gangguan pendengaran terhadap manusia. Bandar udara dapat menimbulkan kebisingan sebagai hasil dari pencemaran melalui aktivitas lalulintas penerbangan. Berdasarkan data yang diperoleh dari hasil pengukuran tingkat kebisingan dengan alat ukur sound level meter menunjukkan bahwa rata-rata tingkat kebisingan yang dihasilkan di area apron Bandar Udara Sultan Thaha Kota Jambi sebesar 91,4 dB. Tujuan dari penelitian ini untuk mengetahui gambaran gangguan pendengaran akibat bising pada marshaller di Bandar Udara Sultan Thaha Kota Jambi tahun 2020. Penelitian dilakukan dengan observasional menggunakan pendekatan deskriptif kualitatif. Dari hasil penelitian yang dilakukan, diperoleh 2 dari 3 marshaller yang merupakan informan utama dalam penelitian mengalami gangguan pendengaran. 1 dari 2 informan tersebut mengalami gangguan pendengaran akibat bising pada kedua telinganya, sedangkan informan lainnya mengalami gangguan pendengaran akibat bising di telinga sebelah kanan. Informan tidak mengalami gangguan pendengaran akibat bising (telinga normal). Pencegahan hanya dapat dilakukan melalui penggunaan alat pelindung diri terhadap pekerja tetapi masih kurangnya kedisiplinan dalam menerapakan penggunaan APD tersebut. Kata Kunci: Bandar Udara, Gangguan Pendengaran, Kebisingan.

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