Department of Communication Pathology, University of Pretoria and Callier Center for Communication Disorders, University of Texas at Dallas, USA.
S Afr Med J. 2010 Mar 30;100(4):239-42. doi: 10.7196/samj.4091.
To determine (i) noise exposure levels of spectators at a FIFA 2010 designated training stadium during a premier soccer league match; and (ii) changes in auditory functioning after the match.
This was a one-group pretest-post-test design of football spectators attending a premier soccer league match at a designated FIFA 2010 training stadium in Gauteng, South Africa. Individual spectator noise exposure for the duration of the football match and post-match changes in hearing thresholds were measured with pure-tone audiometry, and cochlear functioning was measured with distortion product oto-acoustic emissions (DPOAEs).
The average sound exposure level during the match was 100.5 LAeq (dBA), with peak intensities averaging 140.4 dB(C). A significant (p=0.005) deterioration of post-match hearing thresholds was evident at 2 000 Hz, and post-match DPOAE amplitudes were significantly reduced at 1,266, 3,163 and 5,063 Hz (p=0.011, 0.019, 0.013, respectively).
Exposure levels exceeded limits of permissible average and peak sound levels. Significant changes in post-match hearing thresholds and cochlear responsiveness highlight the possible risk for noise-induced hearing loss. Public awareness and personal hearing protection should be prioritized as preventive measures.
（i）确定在 2010 年国际足联指定训练场上举行的一场顶级足球联赛比赛中观众的噪声暴露水平；以及（ii）比赛后听觉功能的变化。
这是一个在南非豪登省的一个 2010 年国际足联指定训练场上举行的顶级足球联赛比赛中，参加比赛的足球观众的单组前测后测设计。个体观众在足球比赛期间的噪声暴露量和听力阈值的赛后变化通过纯音测听法进行测量，耳蜗功能通过畸变产物耳声发射（DPOAE）进行测量。
比赛期间的平均声暴露水平为 100.5 LAeq（dBA），平均峰值强度为 140.4 dB（C）。在 2000 Hz 处，赛后听力阈值明显恶化（p=0.005），并且在 1、266、3、163 和 5、063 Hz 处，赛后 DPOAE 幅度明显降低（p=0.011、0.019、0.013，分别）。
暴露水平超过了可允许的平均和峰值声级的限制。赛后听力阈值和耳蜗反应性的显著变化突出了噪声性听力损失的可能风险。公众意识和个人听力保护应作为预防措施优先考虑。
