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

Beams with Unsymmetric Loadings01:17

Beams with Unsymmetric Loadings

Analyzing a supported beam under unsymmetrical loadings is essential in structural engineering to understand how beams respond to varied force distributions. This analysis involves calculating the deflection and identifying points where the slope of the beam is zero, which are crucial for ensuring structural stability and functionality.
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
Load along a Single Axis01:29

Load along a Single Axis

In structural engineering, the analysis of beams subjected to varying loads is a critical aspect of understanding the behavior and performance of these structural elements. A common scenario involves a beam subjected to a combination of different load distributions.
Consider a beam of length L subjected to a varying load, which is a combination of parabolic and trapezoidal load distribution along the x-axis. In this case, it is essential to determine the resultant loads, their locations, and...
Internal Loadings in Structural Members: Problem Solving01:28

Internal Loadings in Structural Members: Problem Solving

When designing or analyzing a structural member, it is important to consider the internal loadings developed within the member. These internal loadings include normal force, shear force, and bending moment. Engineers can ensure that the structural member can support the applied external forces by calculating these internal loadings.
To illustrate this, let's consider a beam OC of 5 kN, inclined at an angle of 53.13° with the horizontal and supported at both ends. Determine the internal loadings...
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
Thin-Walled Hollow Shafts01:15

Thin-Walled Hollow Shafts

In analyzing a thin-walled hollow shaft subjected to torsional loading, a segment with width dx is isolated for examination. Despite its equilibrium state, this segment faces torsional shearing forces at its ends. These forces are quantitatively described by the product of the longitudinal shearing stress on the segment's minor surface and the area of this surface, leading to the concept of shear flow. This shear flow is consistent throughout the structure, indicating a uniform distribution of...
Distributed Loads: Problem Solving01:21

Distributed Loads: Problem Solving

Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...

You might also read

Related Articles

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

Sort by
Same author

The effects of age, fitness, and health on the passive stiffness of the intact low back and its impact on seated work in a healthy, working, female population.

Ergonomics·2025
Same author

Adapting Fitness Age Calculations to Suit a Modern North American Female Population, Regardless of Age, Race, or Ability Level.

Gerontology & geriatric medicine·2021
Same author

The effects of squatting while pregnant on pelvic dimensions: A computational simulation to understand childbirth.

Journal of biomechanics·2019
Same author

Effects of deceleration-focused exercise strategies on shoulder range of motion and throwing velocity in baseball and softball athletes.

Sports biomechanics·2019
Same author

Development and validation of a computational model for understanding the effects of an upright birthing position on the female pelvis.

Journal of biomechanics·2018
Same author

Determining loads acting on the pelvis in upright and recumbent birthing positions: A case study.

Clinical biomechanics (Bristol, Avon)·2018
Same journal

Erratum. Validity of Poststroke Gait Spatiotemporal and Joint Excursion Metrics Between Inertial Measurement Units and a Marker-Based System.

Journal of applied biomechanics·2026
Same journal

The Influence of Different Starting Block Distances on Internal Tibial Load in Elite Sprinters.

Journal of applied biomechanics·2026
Same journal

Altered Lower-Limb Dynamics in Stop-Jump Activity of Adolescents With Major Thoracic Scoliosis.

Journal of applied biomechanics·2026
Same journal

Biomechanical Differences During Overground Walking in Virtual Reality: A Comparative Study With a Real Environment.

Journal of applied biomechanics·2026
Same journal

The Influence of Relative Schoolbag Mass on Gait Biomechanics of South African Adolescents: The Role of Sex and Grade.

Journal of applied biomechanics·2026
Same journal

Influence of Body Configuration on Kinetics and Multijoint Control Strategies Sprinters Use During the First Step Out of Blocks.

Journal of applied biomechanics·2026
See all related articles

Related Experiment Video

Updated: Jul 4, 2026

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads
07:58

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

Published on: July 25, 2025

Estimating segment inertial parameters using fan-beam DXA.

Jason Wicke1, Genevieve A Dumas

  • 1Department of Health & Human Performance, Texas A&M, Commerce University, Commerce, TX, USA.

Journal of Applied Biomechanics
|June 27, 2008
PubMed
Summary
This summary is machine-generated.

New fan-beam dual-energy x-ray absorptiometry (DXA) accurately estimates body segment inertial parameters. This method, combined with an interpolative data-reduction process, offers precise kinetic analysis for human motion studies.

More Related Videos

Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System
08:08

Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System

Published on: March 6, 2019

A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth
10:50

A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth

Published on: April 8, 2020

Related Experiment Videos

Last Updated: Jul 4, 2026

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads
07:58

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

Published on: July 25, 2025

Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System
08:08

Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System

Published on: March 6, 2019

A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth
10:50

A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth

Published on: April 8, 2020

Area of Science:

  • Biomechanics
  • Medical Imaging
  • Human Motion Analysis

Background:

  • Accurate body segment inertial parameters are crucial for human motion kinetics analysis.
  • Interindividual differences in body composition complicate noninvasive inertial estimation.
  • Dual-energy x-ray absorptiometry (DXA) offers a cost-effective, low-radiation method for estimating these parameters.

Purpose of the Study:

  • To evaluate the accuracy of a new generation of fan-beam DXA machines for estimating inertial parameters.
  • To assess a novel interpolative data-reduction process for enhancing inertial parameter estimation.
  • To validate these methods using physical objects and human participants.

Main Methods:

  • Utilized fan-beam dual-energy x-ray absorptiometry (DXA) to acquire data.
  • Applied a new interpolative data-reduction process to estimate inertial parameters.
  • Obtained inertial estimates for a plastic rod, an animal specimen, and 50 human participants.

Main Results:

  • Fan-beam DXA with the interpolative process yielded highly accurate inertial estimates (0.10-0.39%).
  • Initial estimates for center of mass and moment of inertia showed variance due to endpoint location.
  • Midpoint interpolation significantly reduced errors in center of mass (0.64-0.92%) and moment of inertia (-0.23 to -0.48%) estimates.

Conclusions:

  • Fan-beam DXA combined with the interpolative data-reduction technique provides accurate estimation of body segment inertial parameters.
  • The interpolative method effectively mitigates errors associated with endpoint location variability.
  • This approach enhances the reliability of kinetic analysis in human motion studies.