Search for: [Abstract = "opera singers from a control group. All participants underwent a voice assessment protocol\: an ENT specialist examination and a speech therapist evaluation. Acoustic parameters and subjective observations were obtained, and then analysed. Third part\: in the group of 250 professional opera singers who were examined in Clarós Clinic in 10 years period, fifty\-five cases of vocal fatigue were reported and evaluated. Among subjects were 21 men and 34 women. Mean age of participants was 46,78y \(range 19\-72 years old, standard deviation\: 12.18 year\). Representation of classical voice types was\: 14 tenors, 5 baritones, 2 basses, 22 sopranos, 10 mezzos, 2 contralti. Results. In vocal fold measurement study\: some significant differences and correlation were found. The VFL was diversified between classical voice types. VFL for soprano, mezzo\-soprano, and bass was significantly different from every other type of voice. The vocal range has been shown to have a negative correlation with VFL value, which reflects the narrowest vocal range among bass voices. The analysis confirmed a linear correlation between VFL and individual features of the body such as height and body mass index. Main conclusion from study about ageing changes of singers voice were\: the fundamental frequency \(F0\) level was distinctly decreased in the case of older female singers, but F0 in older male singers had stable"]

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