Jiang Wen, Zhao Fei, Guderley Nicola, Manchaiah Vinaya
a Audiology Centre, The Affiliated Hospital of Xuzhou Medical College , Xuzhou , Jiangsu , China .
b Centre for Speech Language Therapy and Hearing Science, Cardiff Metropolitan University , Cardiff , Wales, UK .
Int J Audiol. 2016;55(4):197-205. doi: 10.3109/14992027.2015.1122237. Epub 2016 Jan 15.
This systematic review aimed to explore the evidence on whether the preferred listening levels (PLLs) and durations of music listening through personal listening devices (PLDs) in adolescents and young adults exceed the current recommended 100% daily noise dose; together with the impact on hearing and possible influential factors of such listening behaviours.
A systematic search was conducted using multiple online bibliographic databases.
The 26 studies were included on the basis of the inclusion and exclusion criteria.
The results showed that up to 58.2% of participants exceeded the 100% daily noise dose, particularly in the presence of background noise. Significantly positive correlations were found among background noise levels and mean PLLs, as well as the proportion of participants exceeding the 100% daily noise dose. Moreover, significantly worse hearing thresholds were found in PLD users using audiometry, and significantly poor results in otoacoustic emission (OAE), even in the participants with self-reported 'normal hearing'.
It is crucial to develop appropriate standards and safe recommendations for daily music exposure dose in future studies. Providing an essential guide and effective education to adolescents and young adults will help raise awareness, increase knowledge, and consequently change attitudes and listening habits.
本系统评价旨在探究青少年和青年通过个人聆听设备（PLD）聆听音乐时的偏好聆听水平（PLL）和时长是否超过当前推荐的每日100%噪声剂量的证据；以及此类聆听行为对听力的影响和可能的影响因素。
使用多个在线书目数据库进行系统检索。
根据纳入和排除标准纳入26项研究。
结果显示，高达58.2%的参与者超过了每日100%噪声剂量，尤其是在存在背景噪声的情况下。背景噪声水平与平均PLL之间，以及超过每日100%噪声剂量的参与者比例之间存在显著正相关。此外，使用听力测定法发现PLD使用者的听力阈值明显更差，即使在自我报告“听力正常”的参与者中，耳声发射（OAE）结果也明显较差。
在未来的研究中制定适当的日常音乐暴露剂量标准和安全建议至关重要。为青少年和青年提供必要的指导和有效的教育将有助于提高认识、增加知识，并因此改变态度和聆听习惯。
