The Effect of the Mediterranean Diet-Integrated Gamified Home-Based Cognitive-Nutritional (GAHOCON) Training Programme for Older People With Cognitive Frailty: Pilot Randomized Controlled Trial.

The sample size was very small (25 participants), limiting the ability to confirm effects or detect interaction effects between groups. Missing baseline data for four control group participants on memory and verbal fluency tests reduces confidence in those specific outcomes. The improvement in physical frailty in the intervention group had an effect size comparable to the control group, and the short duration (12 weeks) may not be sufficient to show true frailty reduction from diet alone. Mediterranean diet adherence was self-reported, which may introduce social desirability bias, particularly in the intervention group who had more knowledge of the diet. Mediterranean diet knowledge was not assessed before the educational lectures, so baseline knowledge retention could not be fully evaluated. Participants and interventionists were not blinded to group assignment, which could influence self-reported outcomes or engagement.

The authors declared no conflicts of interest. The GAHOCON application was codeveloped with Mindvivid, a company specializing in computerized cognitive training for older adults, but the paper states no conflicts of interest.

Do not interpret the significant improvements in the intervention group as proof that the gamified app alone caused the changes. Both groups received identical center-based health and nutritional education lectures for the first four weeks, so the effect of the specific home-based gamified component versus standard education is not fully isolated. Additionally, the small sample size and lack of blinding mean these preliminary results require confirmation in larger trials before changing clinical practice.