Effect of stress on sound in fire fighters

Firefighters are under hihg level of stress because of facing with life-threatening events and heavy work load. It is known that the sound quality of employees is affected in occupations with high stress. In this thesis study, PSS (Perceived Stress Scale) questionnaire was used to measure the stress level. Electroglottography (EGG) and Laryngograph Speech Studio program sound measurements were made to firefighters. The universe of the research was Avcılar and Kıraç Fire Department. It consists of 25 firefighters working at the station. All individuals participating in the study were male. In the acoustic analyzes obtained in the study, the fundamental frequency (F0), % Jitter and % Shimmer, MFZ parameters, PSS scores and demographic survey data, compared using SPSS statistical program. In our study, the pre-hygiene and perturbation parameters made after the F0 and %jitter parameters, statistical results were obtained. No significant difference was observed (p>0.05). Individuals with a high stress score. In the broadband F1 /I/ measurement, there is a negative significant relationship, while in other values no significant difference was observed. Because of the pandemic period limitations, the number of volunteers participating in the study may be low. When the stress levels of the individuals participating in our study were compared, there were significant difference in narrow and broad bands. A significant difference was found in the shimmer /I/ letter measurement. Accordingly, the stress level is high shimmer /I/ measurements in narrow and wide bands of those with low stress levels were more is low. When the data obtained at the end of our study is evaluated, the job therapy and activities to minimize stress levels along with alleviating the burden of regulation is thought to be beneficial. Training programs can be created on how to breath correctly and use sound properly.