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Related Experiment Videos

Reduced active protection to the cochlea during physical exercise.

V Colletti1, F G Fiorino, G Verlato

  • 1ENT Department, University of Verona, Italy.

Acta Oto-Laryngologica
|January 1, 1991
PubMed
Summary

Dynamic physical exercise was found to depress stapedius reflex (SR) activity. This exercise also potentiates temporary threshold shift (TTS) induced by noise exposure, impacting hearing function.

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Area of Science:

  • Auditory physiology
  • Exercise physiology
  • Occupational hearing science

Background:

  • The stapedius reflex (SR) protects the inner ear from loud sounds.
  • The impact of physical exertion on auditory reflex activity and noise-induced hearing changes is not fully understood.

Purpose of the Study:

  • To investigate how dynamic physical exercise affects stapedius reflex (SR) activity.
  • To determine if exercise influences temporary threshold shift (TTS) from noise exposure.

Main Methods:

  • Assessed SR parameters in 10 normal-hearing males before, during, and after a 10-minute submaximal exercise test.
  • Measured auditory responses during exercise and at matched rest intervals.
  • Evaluated the combined effects of noise and exercise on hearing.

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Main Results:

  • Dynamic physical exercise significantly depressed stapedius reflex (SR) activity.
  • Exercise was found to potentiate noise-induced temporary threshold shift (TTS).

Conclusions:

  • Dynamic physical exercise alters auditory reflex function.
  • Exercise may increase susceptibility to noise-induced hearing damage.