Utjecaj uporabe oralnih kontraceptivnih sredstava na kvalitetu glasa

master's thesis

• Title (english): The impact of the use of oral contraceptives on voice quality
• Author: Mirna Ivanić
• Mentor: Ana Bonetti (mentor)
• Committee member: Ana Bonetti (predsjednik povjerenstva)
• Committee member: Ana Leko Krhen (član povjerenstva)
• Committee member: Jasmina Ivšac Pavliša (član povjerenstva)
• Granter: University of Zagreb; Faculty of Education and Rehabilitation Sciences; Zagreb
• Defense date and country: 2018-09-17, Croatia
• Scientific / art field, discipline and subdiscipline: SOCIAL SCIENCES; Speech Therapy

Abstract

Cilj ovog rada bio je ispitati kvalitetu glasa kod ţena koje koriste oralna kontraceptivna sredstva, objektivnom metodom, odnosno akustičkom analizom glasa te usporediti kvalitetu glasa osoba koje koriste oralne kontraceptive s onima koje ih ne koriste. Sve ispitanice bile su ţenskog spola (n=20), kao i kontrolna skupina (n=20). Procjena se sastojala od snimanja fonacije glasa /a/ i mjerenja vremena proizvodnje glasova /s/ i /z/. Objektivnu procjenu činila je akustička obrada i analiza fonacije glasa /a/ pomoću programa PRAAT. Promatrane su sljedeće varijable: jitter, shimmer, omjer šumnog i harmoničnog dijela spektra (HNR), maksimalno vrijeme fonacije te omjer glasova /s/ i /z/. Statističkom obradom nisu pronađene statistički značajne razlike između eksperimentalne i kontrolne skupine što je u suglasnosti s brojnim novijim istraţivanjima koja su potvrdila kako oralna kontracepcija koja se danas koristi sadrţi otprilike pet puta niţu razinu hormona u odnosu na prve oralne kontraceptive.

Abstract (english)

The aim of this paper was to examine the quality of voice in women using oral contraceptives using objective measures and compare the quality of voice of people who use oral contraceptives with those who do not use them. All participants were female (n=20), as well as the control group (n=20). Evaluation comprised of an acoustic and phonation analyses of the sound /a/ using the PRAAT programme and measurement of the ability to sustain sounds /s/ and /z/. The following variables were observed: jitter, shimmer, harmonics to noise ratio (HNR), maximum phonation time and s/z ratio. Statistical analysis did not show statistically significant differences between the experimental and control groups, which is in accordance with numerous recent studies that are confirming that oral contraceptive used today have about five times lower hormone levels than the first oral contraceptives.

• Keywords: oralni kontraceptivi; glas; hormoni; akustička analiza glasa
• Keywords (english): oral contraceptives; voice; hormones; acoustic voice analysis
• Language: croatian
• URN:NBN: urn:nbn:hr:158:866728
• Study programme: Title: 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: 2018-11-16 13:01:56