Andrade Gómez Elena

Age-related subjective memory complaints (SMC) are a common concern among older adults. However, little is known about the effects of cognitive stimulation (CS) interventions on subjective memory complaints. The aim of this study was to analyse the effectiveness of a CS programme on global cognition and cognitive functions of older adults with SMC. A randomised clinical trial was conducted on older adults with SMC, including 308 participants ≥65 years of age assessed 6 and 12 months after the intervention. The assessment instrument was the Spanish version of the Mini-Mental State Examination (MEC-35), and all domains of the instrument were assessed. For statistical analysis, the data were analysed using robust ANOVA with means truncated at 20% utilising a two-way repeated measures model, with between (groups) and within (measurements) factors. In post hoc tests, a Wilcoxon signed-rank test of exact permutations between groups and Bonferroni correction were applied. In post hoc between-group tests, significant differences were found: (1) post-treatment in MEC-35, temporal orientation, short-term memory (STM), global language and praxis, and language and praxis (p ≤ 0.005); (2) at 6 months in MEC-35, global orientation, temporal orientation, and STM (p = 0.005); (3) at 12 months in MEC-35, global orientation, temporal orientation, STM, global language and praxis, and language (p = 0.005). This study shows benefits in global cognition and orientation, temporal orientation, STM, and language in older adults with SMC.

The efficacy of cognitive stimulation programs for the elderly is sufficiently documented. However, few studies have addressed the effectiveness of language stimulation programs by cognitive levels in this population. This randomized controlled trial was conducted on 308 participants from a primary care center and followed the CONSORT guidelines. A stratified randomization was carried out. The primary variable was the MEC-35, validated Spanish version of the Mini-Mental State Examination (MMSE). The secondary outcome variable was set-test, which evaluates verbal fluency in four categories. These tests were assessed for all outcome measures at baseline, at 10 weeks, at 6 months, and 1 year after the intervention. The intervention consisted of 10 sessions of 45 min/week for 10 weeks through mental activation notebooks that comprehensively work on the different cognitive functions. The results show that the comparisons between the control and intervention group turn out to be significant (p < 0.05) at the three time points. The comprehensive cognitive stimulation program has made it possible to improve the global aspects of cognition, language proficiency, and verbal fluency. To optimize and maintain these results, it is necessary to consider other clinical, functional, psychological, and occupational aspects, as well as related educational aspects, which prevent mild cognitive impairment.