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

Sampling duration effects on centre of pressure summary measures.

M G Carpenter1, J S Frank, D A Winter

  • 1Department of Kinesiology, University of Waterloo, Waterloo, Canada N2L 3G1.

Gait & Posture
|February 13, 2001
PubMed
Summary

Longer sample durations improve the reliability of center of pressure (COP) measures for assessing upright stance control. Increased sample times significantly affect root mean square (RMS) and mean power frequency (MPF) values.

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

Learning to balance on a slackline: Development of coordinated multi-joint synergies.

Scandinavian journal of medicine & science in sports·2018
Same author

Threat effects on human oculo-motor function.

Neuroscience·2017
Same author

Attentional requirements of postural control in people with spinal cord injury: the effect of dual task.

Spinal cord·2017
Same author

Physiological arousal accompanying postural responses to external perturbations after stroke.

Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology·2017
Same author

Vestibulo-spinal and vestibulo-ocular reflexes are modulated when standing with increased postural threat.

Journal of neurophysiology·2015
Same author

Response to 'Diagnostic accuracy of common clinical tests for assessing abdominal muscle function after motor-complete spinal cord injury above T6'.

Spinal cord·2015

Area of Science:

  • Biomechanics
  • Human Movement Science
  • Postural Control Research

Background:

  • Accurate assessment of upright stance control is crucial in kinesiology and rehabilitation.
  • Center of Pressure (COP) summary measures are widely used to quantify postural stability.
  • The influence of data sampling duration on COP measure reliability requires further investigation.

Purpose of the Study:

  • To investigate how varying sample durations impact the magnitude and reliability of key COP summary measures.
  • To determine the optimal sample duration for robust characterization of upright stance control.

Main Methods:

  • Collected COP data from 49 participants during quiet standing over three 120-second trials.
  • Subdivided records into 15, 30, 60, and 120-second samples for analysis.

Related Experiment Videos

  • Calculated root mean square (RMS), mean power frequency (MPF), and mean position for each sample duration.

    • Main Results:

    • Root mean square (RMS) significantly increased with longer sample durations.
    • Mean power frequency (MPF) significantly decreased as sample duration increased.
    • Reliability for both RMS and MPF measures showed substantial improvement with extended sample durations.

    Conclusions:

    • Sample duration significantly influences the magnitude of COP summary measures (RMS, MPF).
    • Longer sample durations enhance the reliability of RMS and MPF for assessing postural control.
    • These findings have implications for standardizing COP data analysis in postural control studies.