Research Article| Volume 33, ISSUE 5, P802.e17-802.e23, September 2019

Effect of Chant Training on the Morphology of the Lateral Thyrohyoid Ligament: A Biometric and Acoustic Assessment



      The purpose of this study was to determine the effects of chant training both on the morphologic structure of the lateral thyrohyoid ligament (LTL) and on the acoustic characteristics of the voice.


      Three groups of people participated in the study. Group I was new to chant training, group II had completed or was still continuing chant training, and group III, the control group, did not have any chant training. For all participants, laryngeal cervical magnetic resonance imaging was performed to measure the right and the left LTLs. Additionally, vocal acoustic analyses were performed and compared with the anatomic morphometric measurements. Appropriate statistical assessments were performed to evaluate the measurements.


      The length of the LTL was greater in men, and this finding supports the gender-specific differences in laryngeal structures. Anatomic differences between groups showed that 8 months of training was not sufficient to trigger morphologic changes. The left and right LTLs were asymmetric, but this finding was not statistically significant.


      Analyses revealed that vocal training causes morphologic changes in anatomic structures, which affect vocal quality.

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        • Sprinzl G.M.
        • Eckel H.E.
        • Sittel C.
        • et al.
        Morphometric measurements of the cartilaginous larynx: an anatomic correlate of laryngeal surgery.
        Head Neck. 1999; 21: 743-750
        • Eckel H.E.
        • Sittel C.
        • Zorowka P.
        • et al.
        Dimensions of the laryngeal framework in adults.
        Surg Radiol Anat. 1994; 16: 31-36
        • Jotz G.P.
        • Stefani M.A.
        • Pereira da Costa Filho O.
        • et al.
        A morphometric study of the larynx.
        J Voice. 2014; 28: 668-672
        • Loth A.
        • Corny J.
        • Santini L.
        • et al.
        Analysis of hyoid–larynx complex using 3D geometric morphometrics.
        Dysphagia. 2015; 30: 357-364
        • Howard D.M.
        Acoustics of the trained versus untrained singing voice.
        Curr Opin Otolaryngol Head Neck Surg. 2009; 17: 155-159
        • Mainka A.
        • Poznyakovskiy A.
        • Platzek I.
        • et al.
        Lower vocal tract morphologic adjustments are relevant for voice timbre in singing.
        PLoS ONE. 2015; 10: 1-19
        • Stepp C.E.
        • Heaton J.T.
        • Stadelman-Cohen T.K.
        • et al.
        Characteristics of phonatory function in singers and non-singers with vocal fold nodules.
        J Voice. 2011; 25: 714-724
        • Bosma J.F.
        • Bartner H.
        Ligaments of the larynx and the adjacent pharynx and esophagus.
        Dysphagia. 1993; 8: 23-28
        • Sonninen A.
        • Hurme P.
        • Laukkanen A.M.
        The external frame function in the control of pitch, register, and singing mode: radiographic observations of a female singer.
        J Voice. 1999; 13: 319-340
        • Hollien H.
        That golden voice—talent or training?.
        J Voice. 1993; 3: 195-205
        • Sulter A.M.
        • Schutte H.K.
        • Miller D.G.
        Standardized laryngeal videostroboscopic rating: differences between untrained and trained male and female subjects, and effects of varying sound intensity fundamental frequency, and Ag.
        J Voice. 1996; 10: 175-189
        • Mendes A.P.
        • Brown W.S.
        • Rothman H.B.
        • et al.
        Effects of singing training on the speaking voice of voice majors.
        J Voice. 2004; 18: 83-89
        • Lundy D.S.
        • Roy S.
        • Casiano R.R.
        • et al.
        Acoustic analysis of the singing and speaking voice in singing students.
        J Voice. 2000; 14: 490-493