Cognitive Stimulation in Older Adults With Alzheimer's Disease

NCT ID: NCT07041008

Last Updated: 2025-12-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

514 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-09-01

Study Completion Date

2026-04-30

Brief Summary

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This multicentre study, employing a randomised controlled repeated measures experimental design, will be conducted in several Portuguese institutions that provide care and support services for older adults diagnosed with mild to moderate Alzheimer's disease (AD). The primary aim is to evaluate the effects of two distinct cognitive stimulation modalities (digital vs physical/analogue).

The study will assess the impact of individual cognitive stimulation on multiple domains - specifically cognitive function (with an emphasis on memory and executive function), mood, and quality of life - and investigate how institutional and territorial characteristics influence these effects, considering geographical and organisational diversity as potential moderating factors.

Detailed Description

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Population ageing has increased the prevalence of neurodegenerative diseases, with Alzheimer's disease (AD) being the most common form of dementia. Its wide-ranging impact on cognition, emotion, and daily function necessitates person-centred, multidimensional interventions. In Portugal, dementia affects around 9.5% of those aged 65+, underlining its public health relevance and the need for effective responses.

In the absence of a cure, non-pharmacological interventions like cognitive stimulation (CS) have gained prominence. CS is an evidence-based, psychosocial approach involving structured activities that enhance cognitive functions such as memory, language, attention, and reasoning. Broader and more relational than cognitive training or rehabilitation, CS is effective-especially in mild to moderate AD-in improving cognition, mood, and quality of life. Portuguese and international guidelines support its use, with studies showing potential in reducing depression and anxiety in older adults.

Behavioural and psychological symptoms of dementia (BPSD)-including agitation, apathy, aggression, anxiety, and sleep issues-are common in AD and often more disruptive than cognitive decline. These symptoms increase caregiver stress and the likelihood of institutionalisation. CS may alleviate BPSD through emotional engagement and behavioural regulation.

Assessing CS efficacy requires reliable tools. The Mini-Mental State Examination is widely used in Portugal for cognitive screening, while the Alzheimer's Disease Assessment Scale - Cognitive Subscale is often used in clinical trials. As AD notably impairs executive functions, CS targeting these domains can support autonomy and adaptive behaviour.

Contextual factors, such as institutional resources and geographic location, may influence CS outcomes. However, few studies consider these variables, despite their relevance for implementing sustainable, real-world interventions.

This research adopts a multicentre, randomised controlled design to examine two individual CS modalities in older adults with mild to moderate AD attending Portuguese social care services. It aims to assess CS effects on global cognition (particularly executive function and memory), mood, and quality of life, and to explore how institutional and territorial factors shape outcomes.

By combining validated measures, structured protocols, and a context-sensitive approach, the study seeks to support the implementation of effective, sustainable CS interventions within Portugal's care system.

Conditions

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Dementia Neurocognitive Disorders Cognitive Impairment Cognitive Dysfunction Cognitive Decline

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Outcome Assessors

Study Groups

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Intervention group 1

Participants in the intervention group 1 will participate in two individual CS sessions per week for 12 weeks in addition to their treatment as usual. The sessions will include the same program in every participant site.

Group Type EXPERIMENTAL

Digital intervention

Intervention Type BEHAVIORAL

Individual cognitive stimulation sessions will be delivered using RehaCom software, which provides adaptive, computerised exercises targeting specific cognitive domains.

Intervention group 2

Participants in the intervention group 2 will participate in two individual CS sessions per week for 12 weeks in addition to their treatment as usual. The sessions will include the same program in every participant site.

Group Type EXPERIMENTAL

Physical/Analogue Intervention

Intervention Type BEHAVIORAL

Individual cognitive stimulation sessions will employ structured physical materials, specifically the 'Memories from North to South©' and 'Cognitive Domains' resources, applied on an alternating basis.

Control group (No intervention)

Participants in the control group will receive treatment as usual (TAU) at the site, following the activities specified in their individual care plans.

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Digital intervention

Individual cognitive stimulation sessions will be delivered using RehaCom software, which provides adaptive, computerised exercises targeting specific cognitive domains.

Intervention Type BEHAVIORAL

Physical/Analogue Intervention

Individual cognitive stimulation sessions will employ structured physical materials, specifically the 'Memories from North to South©' and 'Cognitive Domains' resources, applied on an alternating basis.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Age 65 or older.
* Receive care/support services for at least three months.
* A diagnosis of probable AD according to the criteria of the Diagnostic and Statistical Manual of Mental Disorders, fifth edition, text revision.
* Preserved communication skills.
* Native Portuguese speaker.
* Total scores between 10 and 26 points on the Mini Mental State Examination.

Exclusion Criteria

* Cannot read and write.
* Significant sensory or physical limitations.
* Acute or chronic illness preventing participation.
* Severe communication impairment.
* Aggressive or disruptive behaviour.
* Recent initiation (within two months) of neuroleptics, antipsychotics, or other psychoactive medications.
Minimum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Rsocialform - Geriatria, Lda

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Susana I. Justo Henriques, PhD

Role: PRINCIPAL_INVESTIGATOR

Polytechnic University of Beja

Locations

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AMITEI

Leiria, Leria, Portugal

Site Status RECRUITING

Associação de Desenvolvimento Comunitário do Funchal - Garouta do Calhau

Funchal, Madeira, Portugal

Site Status RECRUITING

Instituto S. João de Deus Funchal

Funchal, Madeira, Portugal

Site Status RECRUITING

Associação Alzheimer Açores

Açores, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia da Horta

Açores, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Vila do Porto

Açores, , Portugal

Site Status RECRUITING

CASTIIS

Aveiro, , Portugal

Site Status RECRUITING

CEDIARA - Associação de Solidariedade Social de Ribeira de Fráguas

Aveiro, , Portugal

Site Status RECRUITING

Centro Apoio Social Mozelos

Aveiro, , Portugal

Site Status RECRUITING

Centro Social da Freguesia de Casal Comba

Aveiro, , Portugal

Site Status RECRUITING

O Jardim - Centro de Solidariedade Social de Canedo

Aveiro, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Espinho

Aveiro, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Ovar

Aveiro, , Portugal

Site Status RECRUITING

Patronato de Santo António - Lar D. José do Patrocínio Dias

Beja, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Ferreira do Alentejo

Beja, , Portugal

Site Status RECRUITING

Centro Social do Vale do Homem Casa da Alegria

Braga, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Mirandela

Bragança, , Portugal

Site Status RECRUITING

Residência Sénior DON ANTÓNIO - Hilário & Pereira

Castelo Branco, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia da Soalheira

Castelo Branco, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Vila Velha de Rodão

Castelo Branco, , Portugal

Site Status RECRUITING

Associação Cultural Recreativa e Social de Samuel

Coimbra, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Montemor-o-Novo

Evora, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Vila Real de Santo António

Faro, , Portugal

Site Status RECRUITING

Fundação João Bento Raimundo

Guarda, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Figueira de Castelo Rodrigo

Guarda, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Alcobaça

Leiria, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Alvaiázere

Leiria, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Alvorge

Leiria, , Portugal

Site Status RECRUITING

Associação Casapiana de Solidariedade

Lisbon, , Portugal

Site Status RECRUITING

Associação de Socorros da Freguesia de Turcifal

Lisbon, , Portugal

Site Status RECRUITING

Centro Social Paroquial de Moita dos Ferreiros

Lisbon, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Lisboa - Espaço ComVida

Lisbon, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Campo Maior

Portalegre, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Gaia - ERPI José Tavares Bastos

Porto, , Portugal

Site Status RECRUITING

Quinta de Santa Ana RS

Viana do Castelo, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Caminha

Viana do Castelo, , Portugal

Site Status RECRUITING

Santa Casa da Misericórdia de Ponte de Lima

Viana do Castelo, , Portugal

Site Status RECRUITING

Associação de Solidariedade Social do Alto Paiva

Viseu, , Portugal

Site Status RECRUITING

Associação de Solidariedade Social e Recreativa de Nespereira

Viseu, , Portugal

Site Status RECRUITING

Countries

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Portugal

Central Contacts

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Susana I. Justo Henriques, PhD

Role: CONTACT

00351231202040

Rui PC Maia, BsC

Role: CONTACT

00351967116708

Facility Contacts

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Anália Ruivo

Role: primary

Gonçalo Fernandes

Role: primary

Lisete Nunes

Role: primary

Marisa Pacheco

Role: primary

Célia Pereira

Role: primary

Sónia Braga

Role: primary

Ana Pinheiro

Role: primary

Tânia Silva

Role: primary

Maria José Ramos

Role: primary

Sónia Ferreira

Role: primary

Salomé Martins

Role: primary

Catarina Pinho

Role: primary

Ana Marques

Role: primary

Susana Martins

Role: primary

Raquel do Pereiro

Role: primary

Maria do Céu Carvalho

Role: primary

Fátima Pereira

Role: primary

Catarina Pereira

Role: primary

Catarina Batista

Role: primary

Ana Brás

Role: primary

Sandra Batista

Role: primary

Dulce Barreiros

Role: primary

Sílvia Dourado

Role: primary

Mónica García

Role: primary

Cristina Peres

Role: primary

Tânia Miguel

Role: primary

Paula Reis

Role: primary

Sílvia Lopes

Role: primary

Daniela Semanas

Role: primary

Lígia Sinógas

Role: primary

Isabel Moreira

Role: primary

Ana Nascimento

Role: primary

Teresa Jorge

Role: primary

Sílvia Costa

Role: primary

Chrystelle Amorim

Role: primary

Margarida Capela

Role: primary

Natália Malheiro

Role: primary

Patrícia Rodrigues

Role: primary

Susana Pereira

Role: primary

Other Identifiers

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13062025

Identifier Type: -

Identifier Source: org_study_id

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