NCT04174027

The Effect of Perturbration on Balance Control in Adults

• Status: Unknown
• Phase: —
• Study type: Observational
• Enrollment: 100 (estimated)
• Sponsor: Meir Medical Center · Academic / Other
• Sex: All
• Age: 18 Years – 50 Years
• Healthy volunteers: Accepted

Summary

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

Detailed 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.

Conditions

• Chronic Ankle Instability

Timeline

• Start date: 2019-12-15
• Primary completion: 2020-10-15
• Completion: 2020-12-15
• First posted: 2019-11-22
• Last updated: 2019-11-22