No registrations found.
ID
Source
Health condition
standing balance
elderly
ankle and hip strategy
adaptation
balanshandhaving
ouderen
enkel en heup strategie
adaptatie
Sponsors and support
Intervention
Outcome measures
Primary outcome
Frequency 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 outcome
In 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.
Background summary
N/A
Study objective
Adapatation to stabilizing externally applied force fields reduces postural responses at the ankle and hip
Study design
The 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
Intervention
To 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.
D. Engelhart
Enschede
The Netherlands
+31(0) 534892484
d.engelhart@utwente.nl
D. Engelhart
Enschede
The Netherlands
+31(0) 534892484
d.engelhart@utwente.nl
Inclusion criteria
Healthy 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 criteria
Unable 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
Design
Recruitment
Followed up by the following (possibly more current) registration
Other (possibly less up-to-date) registrations in this register
No registrations found.
In other registers
| Register | ID |
|---|---|
| NTR-new | NL4164 |
| NTR-old | NTR4323 |
| CCMO | NL46985.044.13 |
| ISRCTN | ISRCT wordt niet meer aangevraagd. |
| OMON | NL-OMON40406 |