The Validity and Reliability of 3 Meter Backwards Walk Test in Multiple Sclerosis Patients

Multiple Sclerosis (MS) is an autoimmune, demyelinating disease of the central nervous system that causes different levels of disability with motor and sensory loss. Although the signs and symptoms of the disease vary according to the location of the lesion; loss of strength, spasticity, sensory disturbances, fatigue, ataxia, autonomic dysfunction and decreased visual acuity are frequently seen. One of the most important causes of loss of function is balance problems. Balance problems, on the other hand, result in falls that cause severe injuries. One of the most important goals in the rehabilitation of individuals with MS is to increase their performance by minimizing the risk of falling in their daily lives. For medical professionals, many medical history questionnaires, self-assessment measures and performance-based tests have been developed to determine the risk of falls. Performance-based functional assessments consist of a timed walk and walk test, functional skill, balance and fall risk, 5 times sit-and-go test and Berg Balance Test, 4 square step test and gait speed measurement tests. These tests include the ability to walk forward and revolve around ones priorities. However, walking is a more difficult activity as it involves neuromuscular control and is dependent on proprioception and protective reflexes. In daily life activities, there is a need to walk backwards to perform tasks such as leaning against a chair and opening the door. This movement can be quite challenging especially for elderly people with neurological deficits. It has been noted that the mechanical measurements of the back support, in particular the speed, the step length, and the double support surface are significantly reduced in older adults. In a study conducted in geriatric individuals, it was shown that walking backward was more sensitive to detect age-related changes in mobility and balance than walking forward. The aim of this study is to determine the validity and reliability of the 3-meter backwards walk test for evaluating performance-based fall risk in individuals with MS.