Introduction: The Y Balance Test was developed from the Star Excursion Balance Test (SEBT). SEBT includes 8 reach directions. Later, the test was modified, and a new version was developed, including only 3 reach directions (anterior, posteromedial and posterolateral). In literature, two versions of the test appear – one with the floor-affixed Y Balance Test, from which the measure of performance can be read, and the instrumental Y Balance Test, in which the participant pushes the measuring board in three different directions, and the performance is noted on the device. Lately, the latter has been used more frequently. Purpose: The purpose of this research was to determine the correlation between the instrumental Y Balance Test (FSM Y-Balance Test Kit, USA) and the floor-affixed Y Balance Test for the pathologies, injuries, and chronic conditions of the ankle, knee, and hip. Methods: 21 physiotherapists and 64 patients participated in the research. The patients were attending physiotherapy at the Community Health Centre Kranj with the pathologies of the ankle, knee or hip (injury/defect/chronic condition) and were over 18 years old. Each participant took the instrumental and the floor-affixed Y Balance Test in random order with 3 practice trials and 3 test trials in each direction. The data were statistically analysed with the SPSS 24 tool. Results: There was a statistically significant difference between both tests in the anterior reach direction. The majority of the participants reached further on the floor-affixed Y Balance Test. In the posteromedial direction, some participants performed better on the instrumental Y Balance Test, while some reached further on the floor-affixed Y Balance Test. In the posterolateral direction, the achievements didn’t show any statistically significant difference. Discussion and conclusion: Due to the difference in the results between the two tests, we cannot compare them. The differences between the two tests appear regardless of the type of the impaired joint (hip, knee, ankle, healthy joint).
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