Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Metabolic Rate

Metabolic Rate

The human body is a powerhouse of energy, with every cell performing numerous functions that require energy. This energy production and consumption is measured by the metabolic rate, which quantifies the total heat generated by all the body's chemical reactions and mechanical work. This measurement helps to determine the rate of kilocalorie (kcal) consumption needed to fuel all ongoing activities.
The Basal Metabolic Rate (BMR) measures the energy expended at rest.
Several factors influence the...

Pulmonary Function Tests

Pulmonary Function Tests

Pulmonary Function Tests (PFTs)
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...

Factors Affecting Activity Coefficient

Factors Affecting Activity Coefficient

The extended Debye-Hückel equation indicates that the activity coefficient of an ion in an aqueous solution at 25°C depends on three partially interdependent properties: the ionic strength of the solution, the charge of the ion, and the ion size.
The activity coefficient value for an ion is close to one when the solution has almost zero ionic strength, i.e., when the solution shows close to ideal behavior. As the ionic strength of the solution increases from 0 to 0.1 mol/L, a decrease in the...

Respiratory Capacities

Respiratory Capacities

Respiratory capacities are crucial indicators of lung function, representing the maximum amount of air an individual's respiratory system can handle during various breathing phases.
One key metric is the Inspiratory Capacity (IC), which represents the maximum amount of air that can be inhaled with full effort. IC is calculated by summing the tidal volume and inspiratory reserve volume, typically ranging from 2.4 to 3.6 liters.
The Functional Residual Capacity (FRC) represents the air in the...

Exercise and Cardiac Output

Exercise and Cardiac Output

Regular physical activity is essential for maintaining cardiovascular health, with aerobic exercises being particularly effective. According to the American Heart Association, 150 minutes of moderate to intense aerobic exercise per week is recommended for a healthy heart. Aerobic activities may include brisk walking, running, bicycling, cross-country skiing, and swimming, ideally performed three to five times per week.
Sustained exercise increases the muscles' oxygen demand, which can be met...

You might also read

Related Articles

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

Sort by

Same author

Application of Pitch-Based Measures for Aperiodic Pediatric Dysphonic Voices.

Journal of voice : official journal of the Voice Foundation·2025

Same author

Multidimensional Perceptual Structure of Pediatric Dysphonia in Children With Glottal and Supraglottal Vibratory Sources.

Journal of speech, language, and hearing research : JSLHR·2025

Same author

Segment-Based Signal Typing and Predictive Modeling in Pediatric Dysphonia With Different Vibratory Sources.

Journal of speech, language, and hearing research : JSLHR·2025

Same author

Voice Quality in Pediatric Dysphonia: Assessing Expert Rater Reliability Across Three Perceptual Methods.

Journal of voice : official journal of the Voice Foundation·2025

Same author

Effects of Vibratory Source on Auditory-Perceptual and Bio-Inspired Computational Measures of Pediatric Voice Quality.

Journal of voice : official journal of the Voice Foundation·2023

Same author

Perceptual Measures of Boychoir Voices During the Phases of Pubertal Voice Mutation.

Journal of voice : official journal of the Voice Foundation·2020

Search research articles

Related Experiment Video

Updated: Jun 2, 2026

Measuring the Switch Cost of Smartphone Use While Walking

Measuring the Switch Cost of Smartphone Use While Walking

Published on: April 30, 2020

Metabolic cost and speech quality while using an active workstation.

Ronald Howard Cox¹, Jared Guth, Leah Siekemeyer

¹Dept of Kinesiology & Health, Miami University, Oxford, OH, USA.

Journal of Physical Activity & Health

|April 14, 2011

Summary

This summary is machine-generated.

Active workstations increase physical activity without negatively impacting speech quality. Standing and walking at 1.6 km/h elevated metabolic rate, but speech clarity and perceived exertion remained unaffected.

More Related Videos

A Protocol for Comprehensive Assessment of Bulbar Dysfunction in Amyotrophic Lateral Sclerosis (ALS)

A Protocol for Comprehensive Assessment of Bulbar Dysfunction in Amyotrophic Lateral Sclerosis (ALS)

Published on: February 21, 2011

Assessment of Physical Activity Intensity with Accelerometers and Oxygen Consumption

Assessment of Physical Activity Intensity with Accelerometers and Oxygen Consumption

Published on: June 20, 2025

Related Experiment Videos

Last Updated: Jun 2, 2026

Measuring the Switch Cost of Smartphone Use While Walking

Measuring the Switch Cost of Smartphone Use While Walking

Published on: April 30, 2020

A Protocol for Comprehensive Assessment of Bulbar Dysfunction in Amyotrophic Lateral Sclerosis (ALS)

A Protocol for Comprehensive Assessment of Bulbar Dysfunction in Amyotrophic Lateral Sclerosis (ALS)

Published on: February 21, 2011

Assessment of Physical Activity Intensity with Accelerometers and Oxygen Consumption

Assessment of Physical Activity Intensity with Accelerometers and Oxygen Consumption

Published on: June 20, 2025

Area of Science:

Occupational health
Human physiology
Speech science

Background:

The impact of active workstations on speech quality in work environments is not well understood.
Research is needed to evaluate the physiological and acoustic effects of different postures during work-related tasks.

Purpose of the Study:

To compare energy expenditure and speech quality across sitting, standing, and walking conditions.
To investigate the feasibility of active workstations for increasing physical activity without compromising communication.

Main Methods:

Participants (22 females, 9 males) performed reading and spontaneous speech tasks in sitting, standing, and walking (1.61 km/h) postures.
Physiological measures included oxygen consumption (VO2), blood pressure, and rating of perceived exertion (RPE).
Speech samples were evaluated by blinded expert listeners for quality and fluency.

Main Results:

Standing significantly increased metabolic rate compared to sitting (3.6 ± 0.9 vs. 3.3 ± 0.7 ml·kg-1·min-1).
Walking at 1.6 km/h resulted in higher VO2 values (7.0–8.1 ml·kg-1·min-1).
No significant differences were found in speech syllable count, ungrammatical pauses, or overall speech quality across postures.

Conclusions:

Active workstations effectively increase metabolic rate and physical activity.
Implementing active workstations is viable as it does not impair speech quality or increase perceived exertion.
These findings support the use of active workstations to promote a healthier work environment.