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

Relative Motion Analysis using Rotating Axes

Relative Motion Analysis using Rotating Axes

Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it instrumental in...

Orthogonal Trajectories

Orthogonal Trajectories

Orthogonal trajectories describe the geometric relationship between two families of curves that intersect each other at right angles. One illustrative case involves a family of parabolas that open sideways along the x-axis. These curves share a common shape but differ by a scaling parameter, resulting in a set of curves that all pass through the origin and widen at different rates.Determining Orthogonal TrajectoriesTo identify the orthogonal trajectories for these parabolas, the first step...

You might also read

Related Articles

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

Sort by

Same author

Joint angle trajectories are Robust to segment length estimation methods in human reaching.

PloS one·2025

Same author

Stroke-Related Changes in Tonic and Phasic Muscle Recruitment During Reaching Reveal Pathway-Specific Motor Deficits.

Journal of central nervous system disease·2025

Same author

Stroke-Related Changes in Tonic and Phasic Muscle Recruitment During Reaching Reveal Pathway-Specific Motor Deficits.

bioRxiv : the preprint server for biology·2025

Same author

Control signal dimensionality depends on limb dynamics.

PloS one·2025

Same author

Differential Impact of Biomechanical Constraints on Control Signal Dimensionality for Gravity Support Versus Propulsion.

bioRxiv : the preprint server for biology·2024

Same author

Muscle anatomy is reflected in the spatial organization of the spinal motoneuron pools.

Communications biology·2024

Same journal

A human-specific genetic modifier reconfigures large-scale cortical network dynamics underlying behavioral performance.

bioRxiv : the preprint server for biology·2026

Same journal

<i>Staphylococcus aureus</i> uses a eukaryotic-like uridyltransferase to make UDP-GlcNAc for cell wall synthesis.

bioRxiv : the preprint server for biology·2026

Same journal

Dynamic redistribution of eIF4F controls cap-dependent translation initiation.

bioRxiv : the preprint server for biology·2026

Same journal

When does additional information improve accuracy of RNA secondary structure prediction?

bioRxiv : the preprint server for biology·2026

Same journal

Normative brain-state trajectories reveal deviation from healthy aging in Alzheimer's disease.

bioRxiv : the preprint server for biology·2026

Same journal

Noradrenergic infraslow rhythm during sleep is the critical link between heart-rate dynamics and memory consolidation.

bioRxiv : the preprint server for biology·2026

See all related articles

Search research articles

Related Experiment Video

Updated: May 12, 2026

Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact

Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact

Published on: February 10, 2015

Joint Angle Trajectories Are Robust to Segment Length Estimation Methods in Human Reaching.

Rachel I Taitano^1,2, Valeriya Gritsenko^3,1,2

¹Department of Neuroscience, School of Medicine, West Virginia University, Morgantown, USA.

Biorxiv : the Preprint Server for Biology

|September 16, 2024

Summary

This summary is machine-generated.

Motion capture technology accurately estimates arm joint angles for assessing motor deficits. Using patient height for model scaling provides reliable data for clinical movement analysis, even in remote settings.

Keywords:

Disabilities Dynamic inertial model Model scaling Motion capture technology Motor deficits Movement analysis Movement redundancy Quantitative data Rehabilitation Remote healthcare Upper extremity movements Virtual reality

More Related Videos

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

Published on: July 2, 2021

Related Experiment Videos

Last Updated: May 12, 2026

Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact

Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact

Published on: February 10, 2015

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

Published on: July 2, 2021

Area of Science:

Biomechanics
Rehabilitation Technology
Clinical Assessment

Background:

Movement analysis is vital for diagnosing and treating movement disorders.
Affordable motion capture enhances clinical data accessibility.
Validating motion capture accuracy is crucial, especially for remote patient monitoring.

Purpose of the Study:

To evaluate the accuracy of joint angle calculations from motion capture data.
To compare model scaling methods using direct measurements versus patient height.
To assess the clinical utility of motion capture for motor deficit evaluation.

Main Methods:

Upper extremity movements were tracked using motion capture during a virtual reality reaching task.
Kinematic data was calculated using a scaled dynamic inertial model.
Joint angles (shoulder, elbow, radioulnar, wrist) were computed via inverse kinematics.

Main Results:

Errors in joint angle calculations were compared between direct measurements and height-based scaling.
The variance of errors fell within the normal inter-trial variability range.
Height-based scaling demonstrated sufficient accuracy for clinical application.

Conclusions:

Motion capture data, even when scaled using individual height, provides accurate enough joint angle estimations.
This technology shows promise for remote clinical assessment of motor deficits.
Validated motion capture systems can reliably support patient rehabilitation and diagnosis.