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

Quantification of back motion during asymmetric lifting.

S A Ferguson1, W S Marras, T R Waters

  • 1Department of Industrial and Systems Engineering, Ohio State University, Columbus 43210.

Ergonomics
|July 1, 1992
PubMed
Summary

Lifting tasks become riskier as asymmetry increases, impacting trunk motion and reducing strength. Heavier loads can decrease some motion, but asymmetry generally increases risks for low back disorders.

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

Sleep regularity in shiftwork: A missing metric for fatigue risk management?

Sleep medicine reviews·2025
Same author

How should we manage fatigue in on-call workers? A review of guidance materials and a systematic review of the evidence-base.

Sleep medicine reviews·2024
Same author

Perception versus Reality: The Relationship between Subjective and Objective Measures of Sleep When On-call under Simulated Laboratory Conditions.

Behavioral sleep medicine·2020
Same author

How to keep the mini c-arm laser positional crosshair lit throughout a procedure.

Annals of the Royal College of Surgeons of England·2020
Same author

Waking qEEG to assess psychophysiological stress and alertness during simulated on-call conditions.

International journal of psychophysiology : official journal of the International Organization of Psychophysiology·2019
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

Area of Science:

  • Biomechanics
  • Occupational Health
  • Ergonomics

Background:

  • Trunk motion characteristics influence trunk strength and musculature.
  • Understanding these dynamics is crucial for preventing low back disorders.

Purpose of the Study:

  • To quantify changes in trunk motion (range of motion, velocity, acceleration) across three planes.
  • To assess how these changes are affected by increasing task asymmetry and weight.

Main Methods:

  • Subjects performed dynamic lifting tasks with varying asymmetry and weight.
  • Trunk motion in all three planes was measured during these tasks.
  • Models were developed to predict motion characteristics based on task parameters.

Main Results:

  • Trunk motion generally increased with greater task asymmetry across all planes.
  • Increased task weight led to decreased motion in the sagittal and one transverse plane.
  • Dynamic asymmetric lifts can reduce available strength by up to 21% of maximum static strength.

Conclusions:

  • Task asymmetry is a significant factor influencing trunk motion and potentially increasing injury risk.
  • Findings provide insights into factors contributing to low back disorder development.
  • Dynamic lifting analysis offers a new perspective on occupational safety.

Related Experiment Videos