Effect of Constraining Joint Motions on Postural Control

The recruitment status of this study is unknown because the information has not been verified recently.
Verified October 2012 by National Taiwan University Hospital.
Recruitment status was  Recruiting
Sponsor:
Information provided by (Responsible Party):
National Taiwan University Hospital
ClinicalTrials.gov Identifier:
NCT01703377
First received: October 5, 2012
Last updated: October 9, 2012
Last verified: October 2012
  Purpose

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.


Condition
Healthy Adults

Study Type: Observational
Study Design: Observational Model: Case-Crossover
Time Perspective: Cross-Sectional
Official Title: Effect of Constraining Joint Motions on Postural Control

Further study details as provided by National Taiwan University Hospital:

Estimated Enrollment: 30
Study Start Date: April 2012
  Eligibility

Ages Eligible for Study:   18 Years to 65 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Sampling Method:   Probability Sample
Study Population

Healthy adults from 18-65 years old

Criteria

Inclusion Criteria:

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

Exclusion Criteria:

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

  Contacts and Locations
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Please refer to this study by its ClinicalTrials.gov identifier: NCT01703377

Contacts
Contact: Wei-Li Hsu, PhD 886-3366-8127 wlhsu@ntu.edu.tw

Locations
Taiwan
School & Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University Recruiting
Taipei City, Taiwan, 100
Contact: Wei-Li Hsu, PhD       wlhsu@ntu.edu.tw   
Principal Investigator: Wei-Li Hsu, PhD         
Sponsors and Collaborators
National Taiwan University Hospital
Investigators
Principal Investigator: Wei-Li Hsu, PhD National Taiwan University
  More Information

No publications provided

Responsible Party: National Taiwan University Hospital
ClinicalTrials.gov Identifier: NCT01703377     History of Changes
Other Study ID Numbers: 201203044RIC
Study First Received: October 5, 2012
Last Updated: October 9, 2012
Health Authority: Taiwan: Department of Health

ClinicalTrials.gov processed this record on October 23, 2014