Validity and Reliability of the Newly Developed Balance Assessment System in Healthy Young Adults

The goal of this observational study is to to evaluate the validity and reliability of the "Postural Stability Test", "Stability Limits Test", "Sensory Integration Test" and "One-Leg Standing Test" tests of the newly developed patented balance assessment system in healthy young adults. The main questions it aims to answer are:

* Are the "Postural Stability Test", "Stability Limits Test", "Sensory Integration Test" and "One-Leg Standing Test" tests in the newly developed balance assessment system a valid method for healthy young adults?
* Are the "Postural Stability Test", "Stability Limits Test", "Sensory Integration Test" and "One-Leg Standing Test" tests in the newly developed balance assessment system a reliable method for healthy young adults?

Participants will be evaluated with the "Postural Stability Test", "Limits of Stability Test", "Sensory Integration Test" and "Bilateral Comparison Test" within the AlBalance Balance Evaluation System and Biodex Balance Evaluation System. Participants will be asked to sit in a chair and rest for 5 minutes before starting the tests. To calculate the test-retest reliability and validity of the devices, these measurements will be made by the same evaluator in two sessions, 7 days apart. To eliminate the learning effect, participants who try AlBalance first in the first session will try Biodex first in the second session (reverse test order will be used). Participants who complete all evaluations with the first device will rest for 5 minutes and move on to the other device. Then, parallel clinical tests will be applied to the participants, "Functional Reaching Test" and "One Leg Standing Test".

Balance refers to the ability to maintain the center of gravity within the base of support, regardless of age, and is the foundation of movement. Postural stability is defined as the ability to control the body's center of mass on the base of support and maintain an upright posture. Postural stability is a complex skill that relies on the interaction of multiple dynamic sensorimotor and cognitive systems under static and dynamic conditions. Postural stability and balance are two of the most important factors that determine a person's ability to make and maintain movements Conducting balance and postural stability research is of great importance for both diagnosis and treatment purposes. Commonly used tests such as the Berg Balance Test and Functional Reaching Test can detect changes in balance and postural stability, but the accuracy of the tests is limited as they are highly dependent on the tester's abilities and familiarity with the scale. Therefore, in addition to clinical evaluations, various commercial testing devices are also used to provide needed information about balance and postural stability. Our study aims to evaluate the validity and reliability of the "Postural Stability Test", "Limits of Stability Test", "Sensory Integration Test" and "Bilateral Comparison Test" tests of the newly developed patented balance assessment system in healthy young adults.

With this study, the reliability of a new and local balance assessment system will be tested in healthy young adults. We think that this study will provide preliminary information about the use of a new and local device for professionals working in the field of postural stability and balance assessment.

Eligibility Criteria:
Inclusion Criteria:

* Being between the ages of 18-25
* Body mass index is below 24
* They should be able to understand and follow instructions
* Volunteering to participate in the study

Exclusion Criteria:

* Presence of neuromuscular, rheumatic disease or vestibular problems that may affect balance
* Having a visual impairment that affects vision
* Any other exercise or physical activity that may affect trunk muscle strength or balance
* Having a recent history of orthopedic injury or surgery in the lower extremity
* Having experienced any acute situation that could affect postural stability and balance between the two tests (within 7 days)