Why the study?
Does the menstrual cycle influence temporary threshold shift (TTS) after noise exposure, and are there sex differences?
Does the menstrual cycle influence temporary threshold shift (TTS) after noise exposure, and are there sex differences?
The menstrual cycle phase influences susceptibility to temporary hearing threshold shifts, with women generally showing less shift than men.
The aim of this research was to investigate the influences of the menstrual cycles of women on temporary threshold shift (TTS) and to compare the results with TTS of men. The subjects were, after 5 min rest, exposed to 100dB of continuous white noise for 8 min. The audiometry with a 4000 Hz test tone was done in the 45-min recovery process. In the three phases of the menstrual cycle, TTS tended to be lower in postovulatory phase than in preovulatory phase and during menstruation. The male TTS was higher than that of the female in all phases of menstrual cycle.
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Hori et al. (1992) studied this question.
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