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

How do load carriage and walking speed influence trunk coordination and stride parameters?

M LaFiandra1, R C Wagenaar, K G Holt

  • 1Sargent College of Health and Rehabilitation Sciences, Boston University, USA. michael.lafiandra@na.amed.army.mil

Journal of Biomechanics
|December 18, 2002
PubMed
Summary

Carrying a heavy backpack significantly alters walking biomechanics. Load carriage reduces pelvic rotation, leading to shorter strides and increased stride frequency, necessitating greater hip excursion.

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

Outbreaks attributed to pork in the United States, 1998-2015.

Epidemiology and infection·2017
Same author

Patterns of human interlimb coordination emerge from the properties of non-linear, limit cycle oscillatory processes.

Journal of motor behavior·2013
Same author

Can the transitions to and from running and the metabolic cost of running be determined from the kinetic energy of running?

Journal of motor behavior·2009
Same author

Effects of a hip belt on transverse plane trunk coordination and stability during load carriage.

Journal of biomechanics·2008
Same author

Coordination and stability of one-legged hopping patterns in patients with anterior cruciate ligament reconstruction: preliminary results.

Clinical biomechanics (Bristol, Avon)·2003
Same author

Long term effects of intensity of upper and lower limb training after stroke: a randomised trial.

Journal of neurology, neurosurgery, and psychiatry·2002

Area of Science:

  • Biomechanics
  • Human Movement Analysis
  • Kinesiology

Background:

  • Load carriage significantly impacts gait and trunk coordination.
  • Understanding these effects is crucial for optimizing load-carrying strategies and preventing injuries.

Purpose of the Study:

  • To investigate the effects of load carriage (40% body mass) and walking speed on stride parameters.
  • To analyze the coordination of trunk movements, specifically pelvic and thoracic rotations, during loaded walking.

Main Methods:

  • Twelve subjects walked on a treadmill at various speeds (0.6-1.6 m/s) with and without a 40% body mass backpack.
  • Kinematic data were analyzed to assess stride parameters, pelvic and thoracic rotations, and relative phase.
  • Dimensionless analysis was used to evaluate contributions to stride length.

Related Experiment Videos

Main Results:

  • Load carriage decreased transverse pelvic and thoracic rotation and the relative phase between them.
  • Hip excursion increased, while stride length decreased and stride frequency increased during load carriage.
  • Pelvic rotation contributed less to stride length increases with load, while hip excursion increased but did not fully compensate.

Conclusions:

  • Reduced pelvic rotation is the primary cause of shorter stride length and higher stride frequency when carrying a backpack.
  • Increased hip excursion compensates for decreased pelvic rotation but is insufficient to maintain normal stride length.
  • Altered trunk coordination and stride parameters during load carriage necessitate increased stride frequency to maintain walking speed.