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 Experiment Videos

Spine loading during trunk lateral bending motions

W S Marras1, K P Granata

  • 1Biodynamics Laboratory, Ohio State University, Columbus 43210, USA.

Journal of Biomechanics
|July 1, 1997
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

An EMG-driven biomechanical model of the canine cervical spine.

Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology·2017
Same author

MRI cross sectional atlas of normal canine cervical musculoskeletal structure.

Research in veterinary science·2016
Same author

A quantitative description of typing biomechanics.

Journal of occupational rehabilitation·2013
Same author

Dynamic low back functional motion capacity evaluation.

Journal of occupational rehabilitation·2013
Same author

Carrying and spine loading.

Ergonomics·2013
Same author

Putting mind and body back together: a human-systems approach to the integration of the physical and cognitive dimensions of task design and operations.

Applied ergonomics·2013

Increased trunk velocity during lateral bending elevates spine loading, raising the risk of low-back disorder. Dynamic movements significantly increase spinal compression and shear forces compared to static lifting.

Area of Science:

  • Biomechanics
  • Occupational Health
  • Spine Mechanics

Background:

  • Lateral trunk velocity is linked to low-back disorder risk.
  • Trunk muscle coactivation increases during lateral bending.
  • Spine loading changes with increasing lateral trunk velocity are not well understood.

Purpose of the Study:

  • To investigate how spine loading changes with increasing lateral trunk velocity.
  • To quantify the impact of muscle coactivation on spine loading during dynamic lateral bending.
  • To determine if specific movement directions increase spinal loads.

Main Methods:

  • Twelve subjects performed lateral lifts at static and dynamic velocities.
  • Trunk kinematics and ten trunk muscle activities were recorded.

Related Experiment Videos

  • An EMG-assisted model evaluated spine loading, considering muscle coactivation.

    • Main Results:

    • Muscle coactivation increased significantly during dynamic versus static trials.
    • Coactivation increased spinal loads by up to 25% compared to models without coactivation.
    • Movements to the right increased spinal compression by 252 N compared to the left.
    • Spine compression and lateral shear increased monotonically with trunk velocity.

    Conclusions:

    • Dynamic lateral trunk movements significantly increase spinal loads (compression and shear).
    • Muscle coactivation plays a crucial role in elevating spine loading during dynamic tasks.
    • Increased compression and lateral shear at higher velocities are likely mechanisms for industry-related low-back disorder risk.