Effect of Constraining Joint Motions on Postural Control

NCT01703377 | Unknown DMC

• 1 other identifier: 201203044RIC
• Study Type: observational
• Target: 30
• Locations: 1 country
• Sites: 1

Brief Summary

A major advantage of understanding a neural control scheme is able to simultaneously perform multiple tasks based on the Uncontrolled Manifold (UCM) hypothesis by taking advantage of motor redundancy. The present study aims to investigate this hypothesis further by examining the effect of artificially eliminating knee and lumbar-thoracic joint motions on postural control when the arms performing targeting task simultaneously in standing. Subjects (Younger group: 20\~35 years old; Elder group: 60\~85 years old) will execute a targeting task with and without an additional ball-balancing task in standing with free joint motions and with restricted joint motions. The investigators expect to recruit 50 subjects for each group. Analyses of joint configuration variance on the stability of the center of mass (COM) position and the hand path will be performed using the UCM method of variance analysis. This method partitions joint configuration variance into one component consistent with the use of motor abundance and a component that leads to COM position or hand path variability. Furthermore, the differences between the younger group and the elder group will be evaluated.

Conditions

Healthy Adults

Eligibility Criteria

• Age: 18 Years - 65 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Probability Sample

Study Population

Healthy adults from 18-65 years old

You may qualify if:

• Participants are healthy with no self-reported neurological deficits, musculoskeletal conditions or motion sickness that affected their ability to maintain stable upright posture.

You may not qualify if:

• Participants are healthy with self-reported neurological deficits, musculoskeletal conditions or motion sickness that affected their ability to maintain stable upright posture.

Sponsors & Collaborators

• National Taiwan University Hospital: lead

Study Sites (1)

School & Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University

Taipei, 100, Taiwan

RECRUITING

Study Officials

• Wei-Li Hsu, PhD

  National Taiwan University

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Wei-Li Hsu, PhD

CONTACT

886-3366-8127; wlhsu@ntu.edu.tw

Study Design

• Study Type: observational
• Observational Model: CASE CROSSOVER
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: October 5, 2012
• First Posted: October 10, 2012
• Study Start: April 1, 2012
• Primary Completion: December 1, 2016
• Study Completion: December 1, 2016
• Last Updated: July 8, 2015

Record last verified: 2015-07

Locations

TW (1)