Xbox-Based Exergames Versus Structured Home-Based Cognitive Training for Attention and Executive Functions in Healthy Adults

Primary outcomes

1. Standardized Mini-Mental State Examination (SMMSE)

   Time frame: Baseline and 1 week after completion of the 12-session intervention

   The SMMSE is a brief 30-item cognitive screening tool that assesses attention, memory, orientation, language, and visuospatial abilities. The Turkish validity and reliability of the Standardized Mini-Mental State Examination (SMMSE) were established by Güngen et al. (2002). In the Turkish version, a cutoff score of 23/24 has been established for dementia.

2. d2 Test of Attention

   Time frame: Baseline and 1 week after completion of the 12-session intervention

   The d2 Test assesses sustained and selective attention, visual scanning, and mental concentration. The d2 Test of Attention consists of 14 rows, each containing 47 characters/items. Each row includes lowercase "p" and "d" letters accompanied by one to four marks positioned above or below the letters. Participants are required to identify and mark the letter "d" accompanied by two marks within a time limit of 20 seconds for each row. Scoring is based on the total number of items processed (TN), errors of omission (E1), errors of commission (E2), and concentration performance (CP). Higher TN and CP scores indicate better attentional performance, whereas higher E1 and E2 scores indicate a greater number of errors.

3. Stroop Test

   Time frame: Baseline and 1 week after completion of the 12-session intervention

   The Stroop Test is a neuropsychological measure of selective attention, inhibitory control, processing speed, and cognitive flexibility. The Stroop Test Çapa Version consists of three parts: Stroop A, in which participants name the colors of colored rectangles; Stroop B, in which they read color words printed in incongruent ink colors; and Stroop C, in which they name the ink color while inhibiting the tendency to read the word. Completion time is recorded for each part. In the present study, the Stroop Test Interference Time Difference was calculated by subtracting the completion time of Stroop B from that of Stroop C. The Turkish validity and reliability of the Stroop Test Çapa Version were established by Emek-Savaş et al.

4. WMS-R Digit Span Test (DST)

   Time frame: Baseline and 1 week after completion of the 12-session intervention

   The Digit Span Subtest of the Wechsler Memory Scale-Revised (WMS-R) assesses attention, short-term memory, and working memory. It consists of Forward and Backward Digit Span conditions, in which participants repeat progressively longer digit sequences in the presented or reverse order, respectively. Each sequence length includes two trials, and the respective condition is discontinued when both trials are answered incorrectly. The Turkish standardization of the WMS-R has been established, and normative data are available for the Digit Span Test in Turkish adults aged 50-83 years.

5. The Trail Making Test (TMT)

   Time frame: Baseline and 1 week after completion of the 12-session intervention

   The Trail Making Test (TMT) consists of two parts, TMT-A and TMT-B. TMT-A primarily assesses visual scanning, attention, and processing speed, whereas TMT-B additionally requires cognitive flexibility, set-shifting, working memory, and inhibitory control. The basic scores for TMT-A and TMT-B are completion times in seconds, with longer completion times indicating poorer performance. The Turkish validity and reliability of the Trail Making Test were established.

6. Benton Judgment of Line Orientation Test

   Time frame: Baseline and 1 week after completion of the 12-session intervention

   The Benton Judgment of Line Orientation Test was developed by Benton et al. (1978), and its Turkish standardization was conducted within the BİLNOT battery. The Benton Judgment of Line Orientation Test (BJLOT) is a neuropsychological measure of visuospatial perception and spatial orientation. The test assesses the ability to perceive and identify angular relationships between lines and comprises five practice items followed by 30 test items. Each correct response is scored as one point, yielding a maximum score of 30, with higher scores indicating better visuospatial performance.