[Study of the hearing of rock and roll musicians]. / Estudo da audição de músicos de rock and roll.

BACKGROUND: rock and roll has as one of its main characteristics the excessive sound pressure levels. Several studies have demonstrated that the sound levels of rock concerts can range from 100 to 115dB (A), with peak levels of 150dB (A). AIM: to study the hearing of rock and roll musicians, analyzing the results of the audiological evaluation and verifying the influence of time of exposure to amplified music. METHOD: a questionnaire was answered by 23 rock and roll musicians (46 ears) who were also evaluated by means of pure tone audiometry, immitance audiometry and transient/distortion product evoked otoacoustic emissions (OAET and OAEPD). RESULTS: regarding the time of exposure to music, values close to the limit of acceptance (tending to be significants) were found in the frequencies of 0.5 and 6kHz, in the pure tone audiometry. A statistically significant difference was also found in the OAET test in the frequency of 2kHz and also in the frequencies of 0.75, 1, 4 and 6kHz in the OAEPD test. CONCLUSION: the results indicate that although hearing loss was not found in the studied population, alteration in the register of the OAE already exists, suggesting alteration of the cochlear function. Regarding time of exposure, the results indicate that musicians with more than 10 years of practice present statistically significant differences when compared to those with less time of exposure.

Estudo da audição de músicos de rock and roll / Study of the hearing of rock and roll musicians

TEMA: o rock and roll tem como uma de suas principais características os níveis sonoros elevados. Diversos estudos já constataram que estes níveis variam de 100 a 115dB (A), alcançando picos de 150dB (A). OBJETIVO: estudar a audição de músicos de rock and roll, analisando os resultados da avaliação audiológica e investigar a influência da variável tempo de exposição à música amplificada na audição. MÉTODO: foi aplicado um questionário em 23 músicos (46 orelhas), e os mesmos foram avaliados por meio da audiometria tonal, audiometria vocal, medidas de imitância acústica e emissões otoacústicas (evocadas por estímulo transiente - EOAT e produto de distorção - EOAPD). RESULTADOS: com relação ao tempo de exposição à música, foram encontrados valores próximos do limite de aceitação (tendendo a ser significantes), nas freqüências de 0,5 e 6kHz, na audiometria tonal. Também foi encontrada diferença estatisticamente significante na freqüência de 2kHz, no teste de EOAT e diferença estatisticamente significante nas freqüências de 0,75, 1, 4 e 6kHz, no teste de EOAPD. CONCLUSÕES: os resultados mostraram que apesar de não ocorrer perda auditiva na população estudada, já existe alteração no registro das EOA, o que sugere alteração da função coclear. Com relação ao tempo de exposição, os resultados demonstraram que os músicos com carreira superior a dez anos apresentaram diferença estatisticamente significante comparados aos que estão expostos a menos tempo.

BACKGROUND: rock and roll has as one of its main characteristics the excessive sound pressure levels. Several studies have demonstrated that the sound levels of rock concerts can range from 100 to 115dB (A), with peak levels of 150dB (A). AIM: to study the hearing of rock and roll musicians, analyzing the results of the audiological evaluation and verifying the influence of time of exposure to amplified music. METHOD: a questionnaire was answered by 23 rock and roll musicians (46 ears) who were also evaluated by means of pure tone audiometry, immitance audiometry and transient/distortion product evoked otoacoustic emissions (OAET and OAEPD). RESULTS: regarding the time of exposure to music, values close to the limit of acceptance (tending to be significants) were found in the frequencies of 0.5 and 6kHz, in the pure tone audiometry. A statistically significant difference was also found in the OAET test in the frequency of 2kHz and also in the frequencies of 0.75, 1, 4 and 6kHz in the OAEPD test. CONCLUSION: the results indicate that although hearing loss was not found in the studied population, alteration in the register of the OAE already exists, suggesting alteration of the cochlear function. Regarding time of exposure, the results indicate that musicians with more than 10 years of practice present statistically significant differences when compared to those with less time of exposure.