Reference Values of Different Functional Tests With or Without Cognitive Dual-task in Young Adults

Primary outcomes

1. Timed Up and Go Test without dual task

   Time frame: Baseline

   The test measures the time (in seconds) will taken by a participant to stand up from a chair, walk a distance of 3 m, turn, walk back to the chair, and sit down. To perform the test, the participants will sit on a chair, placing his/her back against the backrest and resting his/her arms on armrests. On the instruction "Go", the participants will rise up from a chair, walk to a line/block on the floor 3 m away, turn around, return, and sit back on a chair.

2. 4 Meter Gait Speed Test without dual task

   Time frame: Baseline

   The participant will walk briskly through the 1-meter "test" zone for acceleration, the central 4-meter "test" zone, and the 1-meter deceleration zone. Time starts with the first leg after the 0 meter line and time is stopped with the first leg after the 4 meter line. In this test, the result is recorded in meters per second (m/s).

3. 10 Meter Walk Test without dual task

   Time frame: Baseline

   In this test, the participant will walk at the best possible speed in a pre-measured 10-meter area. The time starts when the participant's foot is on the starting line and ends when they cross the finish line. In this test, the result is recorded in total seconds.

4. Timed 25-Foot Walk Test without dual task

   Time frame: Baseline

   The participant walks the distance of 7.62 meters as fast as possible but without running. The time to complete the distance will recorded in seconds.

5. 1 min-Sit-to-Stand Test without dual task

   Time frame: Baseline

   Participants put their hands on their hips and they had to stand up and sit down completely and as many times as possible from a chair (height = 46 cm) without arm rests during one minute. Participants are not allowed to use their arms as support. The number of sit-ups performed during 1 minute will recorded.

6. Timed Up and Go Test with dual task

   Time frame: Baseline

   The test measures the time (in seconds) will taken by a participant to stand up from a chair, walk a distance of 3 m, turn, walk back to the chair, and sit down. To perform the test, the participants will sit on a chair, placing his/her back against the backrest and resting his/her arms on armrests. On the instruction "Go", the participants will rise up from a chair, walk to a line/block on the floor 3 m away, turn around, return, and sit back on a chair. The participants will perform with dual task. This dual task will be to say the names of animals.

7. 4 Meter Gait Speed Test with dual task

   Time frame: Baseline

   The participant will walk briskly through the 1-meter "test" zone for acceleration, the central 4-meter "test" zone, and the 1-meter deceleration zone. Time starts with the first leg after the 0 meter line and time is stopped with the first leg after the 4 meter line. In this test, the result is recorded in meters per second (m/s). The participants will perform with dual task. This dual task will be counting down the months of the year starting from December.

8. 10 Meter Walk Test with dual task

   Time frame: Baseline

   In this test, the participant will walk at the best possible speed in a pre-measured 10-meter area. The time starts when the participant's foot is on the starting line and ends when they cross the finish line. In this test, the result is recorded in total seconds. The participants will perform with dual task. This dual task will be counting numbers back from 100 by threes.

9. Timed 25-Foot Walk Test with dual task

   Time frame: Baseline

   The participant walks the distance of 7.62 meters as fast as possible but without running. The time to complete the distance will recorded in seconds. The participants will perform with dual task. This dual task will be counting numbers back from 100 by sevens.

10. 1 min-Sit-to-Stand Test with dual task

    Time frame: Baseline

    Participants put their hands on their hips and they had to stand up and sit down completely and as many times as possible from a chair (height = 46 cm) without arm rests during one minute. Participants are not allowed to use their arms as support. The number of sit-ups performed during 1 minute will recorded. The participants will perform with dual task. This dual task will be counting city names.