Effect of Cognitive Stimulation Therapy on Quality of Life: A Critical Review

Effects of an individual cognitive stimulation intervention on global cognition, memory, and executive function in older adults with mild to moderate Alzheimer's disease

OBJECTIVE

To determine the efficacy of a 12-week individual cognitive stimulation (iCS) intervention on global cognition, memory, and executive function of older adults with mild to moderate Alzheimer's disease (AD).

METHOD

Protocolized analysis using data from a multicenter, single-blind, randomized, parallel two-arm RCT of iCS for older adults with probable AD. A sample of 142 people with probable Alzheimer's disease attending 13 Portuguese institutions providing care and support services for older adults were selected. Intervention group (n = 72) received 24 iCS sessions, twice a week for 12 weeks. Control group (n = 70) maintained their activities as usual. Outcomes included global cognitive function (Mini-Mental State Examination, and Alzheimer's Disease Assessment Scale-Cognitive Subscale), memory (Memory Alteration Test, and Free and Cued Selective Reminding Test), and executive functioning (Frontal Assessment Battery). All participants were assessed at baseline (T0), after the intervention (T1), and 12 weeks follow-up (T2).

RESULTS

The results showed significant improvements in memory performance at follow-up for the intervention group and greater stability in global cognition in the intervention relative to the control group.

CONCLUSION

The current iCS protocol shows effectiveness in cognitive functioning in older adults with probable AD, particularly for memory upon completion of the intervention and at follow-up, adding further support to previous iCS studies showing similar results and to the effectiveness of the current intervention.

Cognitive stimulation and psychosocial results in older adults: A systematic review and meta-analysis

INTRODUCTION

Cognitive stimulation (CS) is a popular and cost-effective intervention, which applies different types of techniques focused on cognitive skills and can be administered by different professionals. CS can be defined as activities that involve cognitive processing usually conducted in a social context and often in a group. Therefore, CS can improve psychosocial functioning and quality of life (QoL), depression, anxiety and activities of daily living (ADLs) independent of the pharmacological treatment such as acetylcholinesterase inhibitors. The objective of this systematic review and meta-analysis was to evaluate the effects of CS on psychosocial outcomes in older adults (aged 65 years or over), with healthy cognitive ageing, mild cognitive impairment (MCI), and dementia.

METHODS

PubMed, Scopus and Web of Science databases were examined from inception to October 2021. A total of 1,997 studies were initially identified in these databases. After discarding studies that did not meet the inclusion criteria, 30 studies were finally included in the systematic review and the meta-analysis performed with robust variance estimator (RVE) due the inclusion of studies with repeated measurements. The quality assessment tools from the National Institutes of Health were used to evaluate the quality of the studies.

RESULTS

CS was significantly associated with a higher QoL in participants who received personalized/adapted CS (RVE = 0.11±0.19 [-0.76, 0.99], t(1.86) = 0.6, p = 0.61). .

CONCLUSION

Personalized/adapted CS seems to improve QoL in older adults.

Carers' experience of everyday life impacted by people with dementia who attended a cognitive stimulation therapy (CST) group intervention: a qualitative systematic review

ObjectivesTo explore carers' experiences of everyday life impacted by people with dementia who attended a seven-week cognitive stimulation therapy (CST) group intervention.MethodsA systematic review of qualitative studies and qualitative mixed method studies was conducted. Eight databases were searched. The selected studies were screened and assessed for methodological quality using the Rayyan Qatar Computing Research Institute (QCRI) and Critical Appraisal Skills Programme Qualitative Checklist (CASP-QC). Three studies were included following an inductive content analysis.ResultsTwo themes were identified: 'Enrichment by enhanced communication' and 'Growth through positive emotional interaction'.ConclusionQualitative research on the impact of the CST group intervention on carers' everyday life with a person with dementia is scarce. Carers experienced feelings of enrichment due to improvement and equality in communication and a possible source of happiness. There was a sense of togetherness and reconnection through music and singing together as well as a sense of mutual growth, increased positive interaction, increased ability to socialize, and feelings of fondness when experiencing glimpses of the previous personality of the person with dementia. Nevertheless, knowledge about the impact of the CST group intervention on carers' personal everyday life is lacking and requires further research.

Cognitive stimulation and cognitive results in older adults: A systematic review and meta-analysis

BACKGROUND AND PURPOSE

The lack of cognitive activity accelerates age cognitive decline. Cognitive stimulation (CS) tries to enhance cognitive functioning. The purpose of this systematic review and meta-analysis was to evaluate the effects of CS on cognitive outcomes (general cognitive functioning and specific cognitive domains) in older adults (aged 65 years or older, cognitively healthy participants, or with mild cognitive impairment, or dementia).

METHODS

PubMed, Scopus and Web of Science databases were examined from inception to October 2021. A total of 1,997 studies were identified in these databases, and. 33 studies were finally included in the systematic review and the meta-analysis. Raw means and standard deviations were used for continuous outcomes. Publication bias was examined by Egger's Regression Test for Funnel Plot Asymmetry and the quality assessment tools from the National Institutes of Health.

RESULTS

CS significantly improves general cognitive functioning (mean difference=MD = 1.536, 95%CI, 0.832 to 2.240), memory (MD = 0.365, 95%CI, 0.300 to 0.430), orientation (MD = 0.428, 95%CI, 0.306 to 0.550), praxis (MD = 0.278, 95%CI, 0.094 to 0.462) and calculation (MD = 0.228, 95%CI, 0.112 to 0.343).

CONCLUSION

CS seems to increase general cognitive functioning, memory, orientation, praxis, and calculation in older adults.

Exploring outcome measures with cognitive stimulation therapies and how these relate to the experiences of people with dementia: A narrative literature review

A narrative literature review was undertaken to consider the outcome measures used in research on cognitive stimulation therapy (CST), cognitive training (CT) and cognitive stimulation (CS) interventions. This review extends findings from previous reviews by including a broad range of study methodologies, both qualitative and quantitative, and explored whether participant experiences of taking part in the research are discussed. A database search identified 1261 articles matching the search criteria, with 29 included in this review. Studies tended to use the manualised CST model, with 11 other models identified. Randomised control trials were chosen as the most used method to explore impact. Across the studies, 65 different outcome measures were used with people with dementia, and only four studies used a qualitative approach. Little information is provided on the assessment process in terms of time taken, assessor, or of the experience of the person with dementia. There is heterogeneity of measures used, within and across domains, and number, and agreement or consistency of measures would provide greater comparability across CS studies. Gaps in reporting were noted on the detail of the assessment process and the experience of people with dementia taking part in this research.

The Role of Individual Characteristics in Predicting Short- and Long-Term Cognitive and Psychological Benefits of Cognitive Stimulation Therapy for Mild-to-Moderate Dementia

Introduction: This study examined the role of individual characteristics in predicting short- and long-term benefits of the Italian version of Cognitive Stimulation Therapy (CST-IT), an evidence-based intervention for people with mild-to-moderate dementia.

Materials and Methods: Data were drawn from a sample (N = 123) of people with dementia (PwD) who took part in a multicenter controlled clinical trial of CST-IT. Assessments at pre-test, immediately after completing the treatment, and 3 months later investigated the following outcomes: general cognitive functioning and language, mood and behavior, everyday functioning, and quality of life. Age, education and baseline (pre-test) cognitive functioning, mood (depression) and behavioral and neuropsychiatric symptoms were considered as predictors of any short- and long-term benefits.

Results: Linear mixed-effects models showed that different individual characteristics -particularly education and age- influenced the benefits of CST-IT, depending on the outcome measures considered. Higher education predicted larger gains in general cognitive functioning and, along with less severe depressive symptoms, in language (magnification effects). Older age was associated with positive changes in mood (compensation effects). Albeit very modestly, older age was also associated with larger gains in everyday functioning (compensation effects). Gains in quality of life were predicted by older age and lower education (compensation effects). Baseline cognitive functioning, mood and/or behavioral symptoms broadly influenced performance too, but their role again depended on the outcomes considered.

Discussion: These findings underscore the importance of considering and further exploring how psychosocial interventions like CST are affected by individual characteristics in order to maximize their efficacy for PwD.

A multicomponent psychosocial intervention among people with early-stage dementia involving physical exercise, cognitive stimulation therapy, psychoeducation and counselling: Results from a mixed-methods study

BACKGROUND

There is increasing awareness of the benefits of both physical and psychosocial interventions to empower and benefit people with dementia and their caregivers. However, the potential additional benefits of combining physical and psychosocial interventions have only been sparsely explored. The aim of this pilot study was to investigate the acceptability and potential impact of a multicomponent intervention comprising physical exercise, cognitive stimulation therapy (CST), psychoeducation and counselling for people with early-stage dementia.

DESIGN

A 15-week multicomponent group-based intervention was offered to people with early-stage dementia in Denmark (N = 44). A mixed-methods design combining interviews, observations, tests of cognitive and physical functioning and an interviewer-assisted questionnaire on quality of life was applied to (1) investigate acceptability of the intervention, including whether people with dementia and their caregivers found the intervention meaningful and (2) to explore and assess changes in participants' physical and cognitive functioning and quality of life. The study was conducted between June 2018 and August 2019.

RESULTS

The pilot study demonstrated that the multicomponent intervention was acceptable for people with early-stage dementia and their caregivers. Test results did not show significant changes in measures of participants' physical and cognitive functioning or quality of life. However, qualitative data revealed that participants perceived the intervention as meaningful and found that it had a positive influence on their physical and social well-being. In addition, interaction and support from peers and staff members was considered important and rewarding.

CONCLUSION

This multicomponent intervention constitutes a meaningful and beneficial activity for people with early-stage dementia and their caregivers. It provides an opportunity to engage in social interactions with peers and experience professional support. The study also underlines the importance of providing prolonged and sustainable interventions for people with dementia to maintain personal and social benefits.