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Multi-joint coordination in standing balance


- candidate number15902
- NTR NumberNTR4323
- ISRCTNISRCT wordt niet meer aangevraagd.
- Date ISRCTN created
- date ISRCTN requested
- Date Registered NTR18-dec-2013
- Secondary IDsNL46985.044.13  P13-35
- Public TitleMulti-joint coordination in standing balance
- Scientific TitleMulti-joint coordination and adaptation of ankle and hip strategy in healthy young and healthy elderly
- ACRONYM
- hypothesisAdapatation to stabilizing externally applied force fields reduces postural responses at the ankle and hip
- Healt Condition(s) or Problem(s) studiedOlder adults, Postural balance, Ankle, Hip
- Inclusion criteriaHealthy young subjects aged between 20-30 years
Healthy elderly subjects aged 70 years or older
Ability to stand independently for approximately 5 consecutive minutes
- Exclusion criteriaUnable to give informed consent
Current orthopeadic problems
Neurological disorders
A history of cardiac conditions that interfere with physical load
Chronic joint pain, or rheumatoid arthritis
Use of medication with an effect on balance control
pregnancy
- mec approval receivedyes
- multicenter trialno
- randomisedno
- group[default]
- Type[default]
- Studytypeintervention
- planned startdate 1-jan-2014
- planned closingdate1-mei-2014
- Target number of participants0
- InterventionsTo study multi-joint coordination, balance disturbances are externally applied by pushing and pulling at the hips and shoulders. The disturbances contain multiple frequencies ranging from 0.05-5Hz, making the disturbance unpredictable. The disturbances are submaximal, challenging the balance control system, but not intended to make subjects step or fall. In addition, to study adaptation of the ankle and hip strategy, external whole-body force fields are applied, by altering the dynamics of the device and thereby manipulating ankle and hip strategy.
- Primary outcomeFrequency Response Functions (FRF) describe the dynamic relation between the disturbances and the human responses (ankle and hip angle and corresponding joint torques) in means of amplitude and timing.
- Secondary outcomeIn addition a human balance control model is fit onto the experimentally derived FRF, to estimate parameters with a physiological meaning, for instance ankle and hip joint passive stiffness, reflexive properties and neural time delays.
- TimepointsThe primary and secondaire measures are calculated after the measurements have been performed. The available data for the calculation (leg and trunk movement and ankle and hip torques) are measured during the two hour trial, continously
- Trial web siteN/A
- statusplanned
- CONTACT FOR PUBLIC QUERIESMsc D. Engelhart
- CONTACT for SCIENTIFIC QUERIESMsc D. Engelhart
- Sponsor/Initiator University of Twente
- Funding
(Source(s) of Monetary or Material Support)
STW/NWO
- PublicationsN/A
- Brief summaryN/A
- Main changes (audit trail)
- RECORD18-dec-2013 - 2-feb-2014


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