PMC9789711_01
Flow diagram of randomization.
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All administrative tasks and data entry were carried out by the research assistant who was not involved in the interventions and outcome assessment (Figure 1).  The final 86 participants were randomly assigned to the CTI and wait-list group (Figure 1).
Cognitive training intervention (CTI) protocol.
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There was a 1-minute break after each section had ended to enable participants to recover (Figure 2). After the experiment phase had ended both CTI and wait-list groups attended usual recreational group activities, following a regular schedule at the elderly center from the 13th week to the 23rd week (Figure 2).