Objektivna i subjektivna evaluacija vokalnog zamora kod sportskih trenera

master's thesis

• Title (english): Objective and subjective evaluation of vocal fatigue in sports coaches
• Author: Katarina Herenda
• Mentor: Ana Bonetti (mentor)
• Committee member: Ana Bonetti (predsjednik povjerenstva)
• Committee member: Iva Hrastinski (član povjerenstva)
• Committee member: Ana Leko Krhen (član povjerenstva)
• Granter: University of Zagreb; Faculty of Education and Rehabilitation Sciences; Zagreb
• Defense date and country: 2022-07-07, Croatia
• Scientific / art field, discipline and subdiscipline: SOCIAL SCIENCES; Speech Therapy

Abstract

Cilj ovog istraživanja bio je objektivnim i subjektivnim metodama procijeniti vokalni zamor kod sportskih trenera. Za objektivnu procjenu korištena je akustička analiza glasa, a mjerene akustičke varijable su bile fundamentalna frekvencija, njena minimalna i maksimalna vrijednost, jitter, shimmer, omjer harmoničnog i šumnog dijela spektra te maksimalno vrijeme fonacije. Akustička analiza navedenih parametara napravljena je pomoću PRAAT programa. Za subjektivnu procjenu korištena je hrvatska verzija Indeksa vokalnog zamora (VFI-C). Ispitivanje je uključivalo snimanje fonacije glasa /a/ na početku radnog tjedna, prije prvog treninga i na kraju radnog tjedna, odnosno poslije zadnjeg treninga u tjednu te ispunjavanje VFI upitnika drugi dan mjerenja. Ispitanici su bili sportski treneri i trenerice s područja grada Zagreba (N=30). Statističkom obradom utvrđeno je da ne postoje statistički značajne razlike u akustičkim parametrima na početku i na kraju tjedna, kao ni statistički značajne razlike između muških i ženskih trenera na VFI upitniku. Unatoč nepostojanju statistički značajnih razlika, uočene su povišene vrijednosti shimmera i kraće maksimalno vrijeme fonacije od referentnih vrijednosti u oba mjerenja, te viši postignuti ukupni rezultat na VFI upitniku koji ukazuje na samoprocjenu prisutnosti vokalnog zamora kod muških i ženskih ispitanika.

Abstract (english)

The aim of this research was to assess vocal fatigue in sport coaches using objective and subjective methods. Objective assessment consisted of acoustic analysis of voice. The acoustic parameters included fundamental frequency, minimal and maximal fundamental frequency, jitter, shimmer, harmonics-to-noise ratio and maximum duration of sustained phonation. Acoustic analysis was made using PRAAT. For the purpose of subjective assessment, the Croatian version of the Vocal Fatigue Index (VFI-C) was used. The examination included recording the phonation of the sound /a/ at the beginning of a week (before the first training) and at the end of the week (after last training of the week) as well as filling in the VFI on the second day of examination. Participants were sport coaches from the city of Zagreb (N=30). A statistical analysis showed that there were no statistically significant differences in acoustic parameters at the beginning and end of the week, as well as no statistically significant differences between male and female sport coaches on the VFI. Despite the absence of statistically significant differences, increased shimmer values and shortened maximum duration of sustained phonation were observed, and higher overall score on the VFI, indicating the self-percieved presence of vocal fatigue in both male and female sport coaches.

• Keywords: vokalni zamor; sportski treneri; Indeks vokalnog zamora; akustička analiza
• Keywords (english): vocal fatigue; sport coaches; Vocal Fatigue Index; acoustic analysis
• Language: croatian
• URN:NBN: urn:nbn:hr:158:563266
• Study programme: Title: Graduate study of Speech and Language Pathology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra logopedije (magistar/magistra logopedije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-08-31 12:18:09