Abstract
The purpose of this study was to evaluate risk factors and the prevalence of voice problems in aerobic instructors. Fifty-four aerobic instructors, mean age 34.1 yrs, completed a voice loss questionnaire. The questionnaire included items related to yrs teaching experience, teaching environment, voice projection, music volume, history of illness, allergies, voice loss, hoarseness, smoking habits, and knowledge of voice hygiene. Results of the questionnaire showed that 44% of the instructors experienced complete or partial voice loss during and/or after instructing. The group experiencing voice loss had a greater number of yrs teaching experience 7.8 vs. 4.9 yrs (p< 0.05). A chi-squared analysis comparing the groups indicated the following symptoms related to voice loss: hoarseness (p = 0.00), sore throat(p = 0.00), and shouting to cue the class (p = 0.00). There was no significant difference between groups for acoustics (p = 0.10), size of facility (p = 0.08), music volume (p = 0.65), microphone usage (p = 0.45), and substitution for other instructors (p = 0.09). It was concluded that aerobic instructors experience a high incidence of voice loss and vocal related problems.
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