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

Muscle Stimulation Frequency

Muscle Stimulation Frequency

The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...

You might also read

Related Articles

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

Sort by

Same author

Overview of the limb injury measurement battery for quality of life (LIMB-QOL).

Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation·2026

Same author

Mild Traumatic Brain Injury and Subsequent Musculoskeletal Injury in US Service Members.

JAMA network open·2026

Same author

From Intradiscal Pressure to Multimodal Estimation of Lumbar Spinal Loads.

Biomedical journal·2026

Same author

The Effect of Occupational Integration on Musculoskeletal Injury in Female Marines in the Fleet: An Epidemiological Cohort Study.

Military medicine·2026

Same author

Intradiscal pressure distributions in degenerated intervertebral discs: A biomechanical investigation.

Journal of medical and biological engineering·2026

Same author

Biomechanical effects of defect size and location on vertebral fracture.

Journal of medical and biological engineering·2026

Search research articles

Related Experiment Video

Updated: May 5, 2026

Using a Split-belt Treadmill to Evaluate Generalization of Human Locomotor Adaptation

Using a Split-belt Treadmill to Evaluate Generalization of Human Locomotor Adaptation

Published on: August 23, 2017

Method for evoking a trip-like response using a treadmill-based perturbation during locomotion.

Pinata H Sessoms¹, Marilynn Wyatt², Mark Grabiner³

¹Naval Health Research Center, San Diego, CA 92106-3521, USA.

Journal of Biomechanics

|November 26, 2013

Summary

This summary is machine-generated.

Researchers developed a treadmill method to simulate trips, helping assess and train fall risk in older adults and amputees. This technique reliably evokes consistent responses for fall prediction.

Keywords:

Accidental falls Amputee CAREN Gait Perturbation Treadmill test Virtual reality

More Related Videos

A Modified Lean and Release Technique to Emphasize Response Inhibition and Action Selection in Reactive Balance

A Modified Lean and Release Technique to Emphasize Response Inhibition and Action Selection in Reactive Balance

Published on: March 19, 2020

Simultaneous Scalp Electroencephalography EEG, Electromyography EMG, and Whole-body Segmental Inertial Recording for Multi-modal Neural Decoding

Simultaneous Scalp Electroencephalography EEG, Electromyography EMG, and Whole-body Segmental Inertial Recording for Multi-modal Neural Decoding

Published on: July 26, 2013

Related Experiment Videos

Last Updated: May 5, 2026

Using a Split-belt Treadmill to Evaluate Generalization of Human Locomotor Adaptation

Using a Split-belt Treadmill to Evaluate Generalization of Human Locomotor Adaptation

Published on: August 23, 2017

A Modified Lean and Release Technique to Emphasize Response Inhibition and Action Selection in Reactive Balance

A Modified Lean and Release Technique to Emphasize Response Inhibition and Action Selection in Reactive Balance

Published on: March 19, 2020

Simultaneous Scalp Electroencephalography EEG, Electromyography EMG, and Whole-body Segmental Inertial Recording for Multi-modal Neural Decoding

Simultaneous Scalp Electroencephalography EEG, Electromyography EMG, and Whole-body Segmental Inertial Recording for Multi-modal Neural Decoding

Published on: July 26, 2013

Area of Science:

Biomechanics
Rehabilitation Engineering
Gerontology

Background:

Trip-related falls are a major concern for older adults and individuals with amputations.
Current methods for assessing fall risk in laboratory settings have limitations.

Purpose of the Study:

To describe a novel treadmill-based method for simulating trip-like events during locomotion.
To evaluate the utility of this method for assessing trip-related fall risk and for training fall prevention strategies.

Main Methods:

Subjects walked on a treadmill within a Computer Assisted Rehabilitation Environment (CAREN).
Postural perturbations were induced by rapid changes in treadmill belt speed during single-limb stance.
Compensatory stepping responses were analyzed, focusing on trunk kinematics.

Main Results:

The perturbation technique successfully evoked trip-like responses and compensatory stepping.
Peak trunk flexion angle and velocity differed significantly between recovery and fall responses.
These kinematic variables align with findings from overground trip-induced falls in older adults.
The method demonstrated consistent within-subject responses to repeated, randomized perturbations.

Conclusions:

The described treadmill perturbation method serves as a reliable surrogate for overground trips.
This technique has potential as a tool for assessing fall risk and for developing fall prevention training programs in at-risk populations.