Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Assessment of Airway, Skin Color, and Use of Accessory Muscles01:30

Assessment of Airway, Skin Color, and Use of Accessory Muscles

1.1K
A thorough assessment of respiratory health is paramount in clinical settings to identify and manage respiratory distress and ensure adequate oxygenation. This article elaborates on the critical aspects of respiratory evaluation, including airway assessment, skin color examination, and the observation of accessory muscle use, which are integral to effectively diagnosing and managing patients with respiratory conditions.
Introduction
The initial evaluation of a patient's respiratory system...
1.1K
Larynx01:21

Larynx

2.0K
The human larynx, often referred to as the voice box, is an intricate organ located in the neck. It serves as a pathway for air to enter the lungs during respiration and is an essential component of voice production.
Anatomy of the Larynx
The larynx consists of various components, including cartilage, muscles, and vocal cords. Its structure includes three large unpaired cartilages—the thyroid, cricoid, and epiglottis—and three smaller paired cartilages—the arytenoids,...
2.0K
Factors Affecting Respiration01:24

Factors Affecting Respiration

5.7K
Respiration is a crucial physiological function involving exchanging oxygen (O2) and carbon dioxide (CO2) between an organism and its environment. Various factors can impact this essential process:
5.7K
Exercise and Muscle Performance01:27

Exercise and Muscle Performance

1.6K
Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
1.6K
Mechanism of Breathing III: The Accessory Muscles01:21

Mechanism of Breathing III: The Accessory Muscles

2.7K
The Role of Accessory Muscles in the Respiratory System
The respiratory system is a complex network that relies on primary respiratory muscles like the diaphragm, but also involves accessory muscles to enhance lung expansion and airflow during both inhalation and exhalation.
Enhancing Inhalation with Accessory Muscles:
Accessory muscles such as the sternocleidomastoid, scalene, intercostal, and abdominal muscles are crucial when additional respiratory effort is required, such as during deep...
2.7K
Muscles for Facial Expressions01:14

Muscles for Facial Expressions

2.4K
The craniofacial muscles are a collection of approximately 20 thin skeletal muscles situated beneath the skin of the face and scalp. These muscles, primarily responsible for the vast array of human facial expressions, originate from the bones or fibrous structures of the skull and extend outwards to connect with the skin. While most skeletal muscles in the body are enveloped in thick fascia, facial muscles generally have a more delicate fascial covering, with the buccinator muscle being a...
2.4K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Expert Consensus Statement on Acoustic Metrics for Swallowing Dysfunction Screening in Older Adults: A Delphi Study.

Journal of voice : official journal of the Voice Foundation·2026
Same author

Gaps and Future Directions in the Research About Masking and Voice Production: Bibliometric Analysis, Systematic Literature Review, and Meta-analysis.

Journal of voice : official journal of the Voice Foundation·2026
Same author

Linear versus nonlinear modeling of dysphonia severity: A comparison between Acoustic Voice Quality Index and machine learning.

Journal of communication disorders·2026
Same author

The Role of Voice Acoustics in Depression Assessment: Findings From Bibliometric Analysis, Literature Review, and Meta-Analysis.

Depression and anxiety·2026
Same author

Translation and Adaptation of the Vocal Fatigue Index into Spanish.

Revista de investigacion e innovacion en ciencias de la salud : RIICS·2026
Same author

Speech Amplification Device Usage in Hypophonia: Spontaneous Speech Intelligibility.

American journal of speech-language pathology·2026

Related Experiment Video

Updated: Aug 24, 2025

Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication
10:16

Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication

Published on: December 2, 2011

14.1K

Muscle Activity and Aerodynamic Voice Changes at Different Body Postures: A Pilot Study.

Adrián Castillo-Allendes1, Mauricio Delgado-Bravo2, Alvaro Reyes Ponce3

  • 1Department of Communicative Sciences and Disorders, Michigan State University, East Lansing, Michigan.

Journal of Voice : Official Journal of the Voice Foundation
|October 23, 2022
PubMed
Summary

Standard body postures did not significantly alter voice aerodynamics or muscle activation in experienced singers. However, vocal pitch varied on unstable surfaces compared to stable postures.

Keywords:
Voice therapy—Voice assessment—Body posture—Surface electromyography—Muscle activity—Aerodynamics assessment

More Related Videos

Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions
10:13

Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions

Published on: November 25, 2017

11.1K
Preparation of the Rat Vocal Fold for Neuromuscular Analyses
07:17

Preparation of the Rat Vocal Fold for Neuromuscular Analyses

Published on: May 15, 2020

3.6K

Related Experiment Videos

Last Updated: Aug 24, 2025

Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication
10:16

Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication

Published on: December 2, 2011

14.1K
Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions
10:13

Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions

Published on: November 25, 2017

11.1K
Preparation of the Rat Vocal Fold for Neuromuscular Analyses
07:17

Preparation of the Rat Vocal Fold for Neuromuscular Analyses

Published on: May 15, 2020

3.6K

Area of Science:

  • Vocal Pedagogy
  • Voice Science
  • Biomechanics

Background:

  • Body posture is crucial in voice training and therapy, but its effects on voice production are inconsistently documented.
  • Standardized descriptions of postures, muscle activity, and voice changes are lacking in scientific literature.

Purpose of the Study:

  • To compare electromyographical (EMG) activation of phonation-breathing muscles across four standardized body postures in experienced singers.
  • To determine if specific body postures influence aerodynamic parameters, vocal pitch, and loudness.

Main Methods:

  • Eight experienced singers performed standardized vocal tasks in four distinct body postures.
  • A 3D-capture system quantified postural alignment.
  • Surface electromyography (sEMG) measured muscle activity during phonation and breathing.
  • Kruskal-Wallis tests analyzed sEMG and aerodynamic data across postures.

Main Results:

  • No significant differences in sEMG activity, aerodynamic parameters, or loudness were found among the tested body postures.
  • Vocal pitch (in semitones) showed significant differences on an unstable surface compared to upright, modified upright, and leaning postures.

Conclusions:

  • The studied body postures did not significantly alter voice aerodynamics or phonation-breathing muscle activation in experienced singers.
  • Further research is needed to explore body posture's role in voice therapy, particularly for individuals with voice disorders and no prior training.