The Effect of Perturbration on Balance Control in Adults

Chronic Ankle Instability Clinical Trial

Official title:

The Effect of Perturbration on Balance Control in Adults

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT04174027
• Other study ID #: MeirMc102-19CTIL
• Status: Not yet recruiting
• Start date: December 15, 2019
• Est. completion date: December 15, 2020

Study information

• Verified date: November 2019
• Source: Meir Medical Center
• Contact: Alon Eliakim, MD
• Phone: 972-9-7471596
• Email: Eliakim.Alon[@]clalit.org.il
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

Balance control in respond to an unexpected platform perturbration during standing and walking: comparison between individuals with chronic ankle instability and healthy individuals.

Description:

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.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 100
• Est. completion date: December 15, 2020
• Est. primary completion date: October 15, 2020
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 50 Years

Eligibility

Inclusion Criteria:

• age 18-50

• good health

• active people

Exclusion Criteria:

• Body weight greater than 135 kg

• Bone instability (non-consolidated fractures, unstable spinal column, severe osteoporosis)

• Head damage in the year prior to the study

• Diabetics or Unstable circulation

• Cardiac (blood) contraindications

• Vestibular problem

• Neurological deficits

• Mechanical ventilation problem

• Severe vascular disorders of the lower limbs

Related Conditions & MeSH terms

• Chronic Ankle Instability

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
Meir Medical Center

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	movement inside the foot during balance control.	The changes in center of pressure (COP) amplitude height	30 minutes
Primary	static balance control in reaction to perturbration	The angle velocity at the ankle at the moment of loosing postural control while standing	20 minutes
Primary	dynamic balance control un reaction to perturbration	the speed of perturbration at the moment of loosing balance while walking	10 minutes
Secondary	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	30 minutes