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

Lumbar-pelvic range and coordination during lifting tasks.

A Maduri1, B L Pearson, S E Wilson

  • 1National Institute for Occupational Safety and Health, Morgantown, WV, United States.

Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology
|April 24, 2007
PubMed
Summary

Lumbar spine motion during lifting tasks shows neutral orientation during flexion. However, extension involves a kyphotic posture, potentially increasing injury risk due to excessive spinal loading.

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

Prospective monitoring of adverse events following vaccination with Modified vaccinia Ankara - Bavarian Nordic (MVA-BN) administered to a Canadian population at risk of Mpox: A Canadian Immunization Research Network study.

Vaccine·2024
Same author

Corrigendum to "Topical losartan inhibits corneal scarring fibrosis and collagen type IV deposition after Descemet's membrane-endothelial excision in rabbits" [Exp. Eye Res. 216 (2022) 108940].

Experimental eye research·2022
Same author

A systematic review of tetanus in individuals with previous tetanus toxoid immunization.

Canada communicable disease report = Releve des maladies transmissibles au Canada·2018
Same author

Novel evidence for paternal dietary influences on cognitive and neural functions in offspring mice.

Molecular psychiatry·2017
Same author

A paternal methyl donor-rich diet altered cognitive and neural functions in offspring mice.

Molecular psychiatry·2017
Same author

Novice lifters exhibit a more kyphotic lifting posture than experienced lifters in straight-leg lifting.

Journal of biomechanics·2015

Area of Science:

  • Biomechanics
  • Spinal Physiology
  • Musculoskeletal Health

Background:

  • Spine motion includes a neutral zone with low resistance and an elastic zone with higher resistance.
  • Passive muscles further limit the functional neutral range of lumbar motion.
  • Exceeding the functional neutral range may increase loads on spinal structures.

Purpose of the Study:

  • To examine the range of lumbar curvature rotation during lifting tasks.
  • To define lumbar curvature during straight-leg lifting relative to the total range of motion.
  • To investigate the influence of torso inclination and lifting load on lumbar posture.

Main Methods:

  • Twelve healthy, untrained volunteers participated.
  • Lumbar curvature rotation was measured at four torso inclination angles.

Related Experiment Videos

  • Lumbar curvature during straight-leg lifting was quantified as a percentage of the total range.

    • Main Results:

    • Subjects maintained a neutral lumbar orientation during the flexion phase of lifting.
    • During extension, subjects adopted a kyphotic posture, nearing the limit of their functional range of motion.
    • This kyphotic posture during extension was more pronounced with heavier lifting tasks.

    Conclusions:

    • The kyphotic posture during lifting extension may utilize stretch-shortening mechanisms in extensor muscles to reduce energy expenditure.
    • This posture, however, could lead to excessive loading on spinal elastic structures and musculature.
    • Increased loading may elevate the risk of spinal injury during lifting activities.