An observational study in Chronic Ankle Instability, sponsored by Meir Medical Center. Status unknown. Open to participants aged 18 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-11-22.
Sponsored by Meir Medical Center · Observational
Balance control in respond to an unexpected platform perturbration during standing and walking: comparison between individuals with chronic ankle instability and healthy individuals.
An unexpected postural perturbration is a major risk factor of falls and injuries during gait. A postural perturbration is a sudden change in conditions that displaces the body posture away from equilibrium. Reactive postural control response is an immediate ( 70-120 ms ) automatic "like reflex" response which is initiated by unexpected postural perturbration in order to maintain balance. Even among young healthy adults there could be a problem in balance performance which does not become evident untill a slip or a trip or any other sudden perturbration happens. Thus a simple test of pertubration while standing or walking can identify a problem .
This study is comparing the reactive postural control of physical education students who suffer from chronic ankle instability (CAI) to healthy students on a Perturbation Treadmill. The device consists of a treadmill mounted on a moving force plate platform. The platform moves in the medial/ lateral plains to simulate a slip and a trip in both the standing and walking phase. Their reactive postural control is tested in a few conditions: standing on both legs - eyes open and eyes closed, in tandem standing, standing on one leg and in walking. In each condition the perturbration is given every 5-15 seconds in different speed and in unexpected direction (right /left). Lost of balance control is any change in the original location of the foot in standing conditions or stepping out of the treadmill.
Meir Medical Center is the lead sponsor of 389 studies on the registry; 34 are open to participants now.
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Physical education students from Zinman College in Wingate
Exclusion Criteria:
static balance control in reaction to perturbration
The angle velocity at the ankle at the moment of loosing postural control while standing
Time frame: 20 minutes
dynamic balance control un reaction to perturbration
the speed of perturbration at the moment of loosing balance while walking
Time frame: 10 minutes
Time to returning to original condition
How much time it takes to come back to the original step (Center of Pressure - COP) after the perturbration
Time frame: 30 minutes
movement inside the foot during balance control.
The changes in center of pressure (COP) amplitude height
Time frame: 30 minutes
No study locations are listed for this record.
Plan to share: No
No publications or documents are linked to this record.
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Meir Medical Center