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

Normal Strain under Axial Loading

Normal Strain under Axial Loading

Normal strain under axial loading is an important concept in the field of mechanics of materials. Axial loading implies the application of a force along the axis of a material, like a column or bar. This force can either compress or stretch the material. In the context of axial loading, normal strain is the deformation experienced by the material in the direction of the loading force. It's calculated as the change in length divided by the original length of the material. This unitless ratio...

You might also read

Related Articles

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

Sort by

Same author

Effects of auditory perturbations on recovery dynamics as a component of locomotor resilience in healthy young and older adults.

Gait & posture·2026

Same author

Group synchrony and pain: investigating the interplay between social bonding and affective states.

Proceedings. Biological sciences·2026

Same author

Distinguishing Muscle Oxygen Saturation from Tissue Oxygen Saturation: Accuracy, Limitations, and Practical Utility in Muscle Oximetry.

Sports medicine - open·2026

Same author

E-cohort profile: ComPaRe chronic low back pain (CLBP) cohort.

Annals of physical and rehabilitation medicine·2026

Same author

Obesity is linked to impaired sensorimotor synchronization during walking but not tapping.

Scientific reports·2026

Same author

Heat Acclimation During the Third Week of a Live-High-Train-High Training Camp Does Not Impair the Hematological and Perceptual Responses to Altitude.

Scandinavian journal of medicine & science in sports·2026

Same journal

Torque provides a more comprehensive assessment of reverse total shoulder arthroplasty lateralization than moment arms or muscle forces.

Journal of biomechanics·2026

Same journal

Age-related adaptations in acceleration and deceleration control during gait.

Journal of biomechanics·2026

Same journal

Regional mechanical differences in hamstring muscles after removal of surrounding connective tissue.

Journal of biomechanics·2026

Same journal

A novel knee joint laxity measurement device in mice.

Journal of biomechanics·2026

Same journal

Influence of iliofemoral ligament laxity on hip joint contact forces during gait.

Journal of biomechanics·2026

Same journal

Associations of sagittal spinal alignment with shear wave velocity, thickness, and echo intensity of muscles attached to the spine and pelvis in healthy women.

Journal of biomechanics·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 23, 2026

Induction and Assessment of Exertional Skeletal Muscle Damage in Humans

Induction and Assessment of Exertional Skeletal Muscle Damage in Humans

Published on: December 11, 2016

Reliability of a novel neck external loading dynamometer.

Marc Julia¹, Loic Damm², Simon Pla²

¹EuroMov Digital Health in Motion, Univ Montpellier, IMT Mines Ales, Montpellier, France; Department of Physical Medicine and Rehabilitation, CHU Montpellier, Univ Montpellier, France.

Journal of Biomechanics

|November 4, 2024

Summary

This summary is machine-generated.

The Cervistab device reliably measures neck extensor muscle responses to sudden head movements, crucial for understanding and preventing rugby head and neck injuries.

Keywords:

Cervical reflex Concussion Head and neck injury Muscle Rugby

More Related Videos

Measuring the Motor Aspect of Cancer-Related Fatigue using a Handheld Dynamometer

Measuring the Motor Aspect of Cancer-Related Fatigue using a Handheld Dynamometer

Published on: February 20, 2020

Cantilever Bending of Murine Femoral Necks

Cantilever Bending of Murine Femoral Necks

Published on: January 5, 2022

Related Experiment Videos

Last Updated: Jun 23, 2026

Induction and Assessment of Exertional Skeletal Muscle Damage in Humans

Induction and Assessment of Exertional Skeletal Muscle Damage in Humans

Published on: December 11, 2016

Measuring the Motor Aspect of Cancer-Related Fatigue using a Handheld Dynamometer

Measuring the Motor Aspect of Cancer-Related Fatigue using a Handheld Dynamometer

Published on: February 20, 2020

Cantilever Bending of Murine Femoral Necks

Cantilever Bending of Murine Femoral Necks

Published on: January 5, 2022

Area of Science:

Biomechanics
Sports Medicine
Neuromuscular Physiology

Background:

Head and neck injuries are a significant concern in rugby.
Assessing neck muscle response to perturbations is vital for injury prevention.
A validated device for measuring neck extensor response to flexion is lacking.

Purpose of the Study:

To test the reliability of the Cervistab device.
To assess the neck extensor muscle response to a flexion perturbation.
To evaluate the device's utility in understanding neck stability and injury prevention.

Main Methods:

The Cervistab electro-pneumatic device was used to create flexion push-loading events.
Twelve healthy volunteers participated in a test-retest protocol over 7 days.
Measurements included muscle mechanical latency and rates of force development under 20% and 50% preloading.

Main Results:

Cervistab demonstrated good reliability for muscle mechanical latency (ICC 0.81-0.88, CV 3.5%).
Non-reflex and reflex rates of force development also showed good reliability (ICC 0.78-0.89).
Bland and Altman analysis indicated no significant bias, supporting measurement consistency.

Conclusions:

The Cervistab device provides reliable measurements of neck extensor muscle responses.
This device can enhance understanding of neuromechanical factors in neck stability.
Cervistab may aid in preventing head/neck injuries and guiding return-to-play decisions in rugby.