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Modified Experimental Conditions for Noise-Induced Hearing Loss in Mice and Assessment of Hearing Function and Outer Hair Cell Damage
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Impulse noise: can hitting a softball harm your hearing?

Korrine Cook1, Samuel R Atcherson1

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Summary
This summary is machine-generated.

Recreational softball bats made of aluminum, composite, or wood do not pose a significant hearing risk. Peak sound pressure levels are below the threshold for potential hearing damage during typical slow-pitch games.

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Area of Science:

  • Audiology
  • Sports Science
  • Materials Science

Background:

  • Recreational sports can involve loud noises.
  • Understanding noise exposure from sports equipment is crucial for safety.

Purpose of the Study:

  • To assess the hearing risk associated with different softball bat materials (wood, aluminum, composite).
  • To measure sound pressure levels and analyze frequencies produced during slow-pitch softball impacts.

Main Methods:

  • Controlled softball pitching with wooden, aluminum, and composite bats.
  • Measurement of peak sound pressure levels (dBC) and spectral analysis.
  • Testing conducted outdoors in a regulation playing field.

Main Results:

  • Peak sound pressure levels: aluminum (124.6 dBC), composite (121.2 dBC), wood (120.0 dBC).
  • Aluminum bats produced distinct high-frequency peaks (1700 Hz, 2260 Hz), causing a 'ping' sound.
  • Composite and wooden bats showed similar, broadly distributed frequency responses.

Conclusions:

  • Softball bat impacts in recreational slow pitch generate sound levels below 140 dBC.
  • These sound levels are unlikely to cause hearing damage, even with multiple exposures.
  • Different bat materials present minimal to no hearing risk in this context.