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Blood Lactate as a Metabolic Biomarker of Anaerobic Vocal Capacity: A Pilot Study.
J Voice
January 2025
Department of Speech, Language, and Hearing Sciences, Auburn University, Auburn, AL.
Purpose: Blood lactate concentration is commonly used to assess metabolic demand and skeletal muscle training response. The objective of the pilot study was to investigate if a change in blood lactate was detectable in an anaerobically designed vocal demand task vocal capacity anaerobic task (VCAT) and determine if the developed vocal demand task may assess the anaerobic capacity of the voice musculature, like anaerobic power tests commonly used in applied exercise science.
Methods: A prospective repeated measures study quantified blood lactate concentration preVCAT and postVCAT in vocally healthy adults.
Laryngeal photobiomodulation: application sites, interferences from body mass index and skin phototype.
Codas
August 2024
Departamento de Fonoaudiologia, Faculdade de Medicina, Universidade Federal de Minas Gerais - UFMG - Belo Horizonte (MG), Brasil.
Purpose: Establish points on the neck, correspondent to the laryngeal topography, where to apply Low Level Light therapy (LLLT), to evaluate the incidence of light through variables such as skin phototype and body mass index (BMI).
Methods: This is a cross-sectional, analytical, observational study, carried out with 15 vocally healthy women, between 18 and 50 years of age, who were divided into three groups, according to BMI and skin phototype. Six anatomical reference points were established to locate the larynx and its musculature, with visual monitoring by videonasolaryngoscopy, to assess light reach (present/absent) and degree of illumination (from very weak to very strong) in the larynx during the LASER application at doses of 3J, 6J and 9J.
Morphological comparison of the larynx and trachea of Chelonia mydas (Linnaeus, 1758), Caiman yacare (Daudin, 1802) and Caiman latirostris (Daudin, 1802).
An Acad Bras Cienc
July 2024
Programa de Pós-Graduação em Ciências Veterinárias, Universidade Federal do Espírito Santo, Alto Universitário, s/n, 29500-000 Alegre, ES, Brazil.
The larynx is in the lower respiratory tract and has the function of protecting the airways, controlling, and modulating breathing, assisting the circulatory system, and vocalizing. This study aims to describe the anatomy and histology of the skeleton of the larynx and trachea of the species Chelonia mydas, Caiman yacare and Caiman latirostris. The study was conducted at the Federal University of Espírito Santo (UFES), using nine specimens of Ch.
View Article and Find Full Text PDFThe Characterization of Normal Male and Female Voice from Surface Electromyographic Parameters.
J Pers Med
June 2024
Speech Therapy University Clinic, Department of Basic Psychology, Universitat de València, Avda. de Blasco Ibáñez, 21, 46010 Valencia, Spain.
Currently, there is no consensus on the characterization of the human voice. The objective of the present study is to describe the myoelectric behavior of the extrinsic musculature of the larynx in 146 people with normal voice (Spanish speakers), aged between 20 and 50 years old. Different vocal tasks were recorded using a surface electromyograph (SEMG).
View Article and Find Full Text PDFThe Relationship between Posture and Muscle Tensive Dysphonia in Teachers: A Systematic Scoping Review.
J Funct Morphol Kinesiol
March 2024
Department of Biomedical and Biotechnological Sciences, Section of Anatomy, Histology and Movement Science, School of Medicine, University of Catania, Via S. Sofia 97, 95123 Catania, Italy.
Teachers usually present work-related pain such as neck pain. Their posture could be the cause of these problems; indeed, it is often a sway-back posture. Furthermore, teachers can also experience problems with their voice such as dysphonia, specifically muscle tension dysphonia (MTD).
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