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Joaquín Lana joaquinlana en gmail.com
Mar Jun 29 17:29:08 CEST 2010


*Football match spectator sound exposure and effect on hearing: A
pretest-post-test study.

*

*ABSTRACT*

*OBCJETIVES:* '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.
*METHODS:* 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
otoacoustic emissions (DPOAEs).
*RESULTS:* 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).
*CONCLUSIONS:* Exposure levels exceeded limits of permissible average and
peak sound levels. Significant changes in postmatch hearing thresholds and
cochlear responsiveness highlight the possible risk for noise-induced
hearing loss. Public awareness and personal hearing protection should be
prioritised as preventive measures.

http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S0256-95742010000400024&lng=en&nrm=iso&tlng=en
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