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IMST para Redução do Risco de Demência

2 de novembro de 2026 atualizado por: Julia Sheffler, Florida State University

Estudo-Piloto Controlado e Randomizado do Treino de Força Muscular Inspiratória (TFMI) para Reduzir o Risco de Demência em Idosos

Using a 2-arm, RCT approach, the primary goal of the study is to evaluate the feasibility and preliminary efficacy of Inspiratory Muscle Strength Training (IMST) as a non-pharmacologic intervention to reduce cardiovascular and cognitive risks in older adults. Next, investigators will examine secondary effects of IMST on mood, sleep quality, systemic inflammation, and physical/motor function. Finally, investigators will assess participant adherence and acceptability ratings of using an 8-week home-based IMST protocol in a diverse older adult sample.

Visão geral do estudo

Status

Recrutamento

Condições

Intervenção / Tratamento

Descrição detalhada

This is a 2-arm randomized pilot trial (N=30), including adults aged 60-80 years of age with cardiovascular risks for dementia. Participants will complete assessments prior to beginning the study, each week during the intervention, and at the conclusion of the 8-week intervention. Participants in the experimental group will complete daily high-resistance IMST training (e.g., 75% maximal inspiratory pressure), and participants in the sham condition will complete IMST training at 15% maximal inspiratory pressure. Investigators hypothesize the following: Hypothesis 1: Participants in the high-resistance IMST group will show greater reductions in systolic blood pressure and other vascular health indicators compared to those in the sham IMST group after 8 weeks.

Hypothesis 2: Participants in the high-resistance IMST group will demonstrate greater improvements in executive cognitive function than those in the sham group.

Hypothesis 3: IMST will lead to secondary improvements in mood (reduced depression and anxiety symptoms), better sleep quality (as measured by self-report and actigraphy), and improved physical function (e.g., grip strength, gait speed).

Hypothesis 4: The IMST protocol will be feasible and acceptable, with at least 80% adherence to prescribed training sessions over the 8-week period.

Tipo de estudo

Intervencional

Inscrição (Estimado)

30

Estágio

  • Não aplicável

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Locais de estudo

    • Florida
      • Tallahassee, Florida, Estados Unidos, 32301
        • Recrutamento
        • Florida State University
        • Contato:

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

60 anos a 80 anos (Adulto, Adulto mais velho)

Aceita Voluntários Saudáveis

Não

Gêneros Elegíveis para o Estudo

Tudo

Descrição

Inclusion Criteria:

  • Ages 60-80
  • Converted telephone MoCA total score≥18
  • Presence of at least one dementia risk factor (e.g., MCI or subjective cognitive decline, hypertension [SBP >130 mmHg or on medication], sedentary lifestyle [<150 min/week], family history of dementia or self-reported APOE ε4 carrier, or mild sleep-disordered breathing; CAIDE total score [>5]
  • Capable of independently completing or requiring minimal assistance with inspiratory muscle strength training (IMST)
  • Willing to adhere to the IMST protocol (approximately 5-10 minutes per day for 8 weeks)
  • Optional inclusion of inspiratory muscle weakness (MIP <80 cmH₂O for men, <70 cmH₂O for women) will also be assessed.

Exclusion Criteria:

  • tMoCA <18, or diagnosis of neurodegenerative illness at the discretion of principal investigator (except MCI)
  • Current evidence of any major psychiatric disorder including psychosis (at the discretion of principal investigator), bipolar disorder, severe major depression (PHQ-9 > 20)
  • Unstable cardiovascular or pulmonary disease
  • Recent respiratory therapy or major medication changes
  • Self-reported severe untreated or unstable obstructive sleep apnea (OSA)
  • Recent start (within the past month) of CPAP or BiPAP, or recent use of inspiratory muscle training
  • Lung and eardrum injuries
  • Non-English speaking
  • Participants with a pacemaker or other medical implants containing magnets or electronics will be noted and excluded from body composition analyses.

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Prevenção
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Solteiro

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: High-Resistance

Participants assigned to the high resistance arm will complete inspiratory muscle strength training (IMST) using a handheld respiratory training device set to 75% of their maximal inspiratory pressure (MIP). Participants will follow the IMST training regimen for the duration of the intervention period, 8-weeks, consisting of 30 breaths per day, completed in a minimum of 5 minutes.

Investigators will use POWERbreathe® Electronic IMST devices and manually set them to 75% of an individual's IPpeak, depending on their randomization, to the high-resistance IMST group or very low-resistance IMST (sham) group. All participants will complete 30 training breaths per day at home for 8 weeks.

Comparador Falso: Control Group - Low-Resistance

Participants assigned to the low-resistance arm will complete inspiratory muscle strength training (IMST) using a handheld respiratory training device set to 15% of their maximal inspiratory pressure (MIP). Participants will follow the IMST training regimen for the duration of the intervention period, 8-weeks, completing 30 inspiratory breaths per day, with each session lasting a minimum of 5 minutes.

Investigators will use POWERbreathe® Electronic IMST devices and manually set them to 15% of an individual's IPpeak, depending on their randomization, to the high-resistance IMST group or very low-resistance IMST (sham) group. All participants will complete 30 training breaths per day at home for 8 weeks.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Change in systolic BP
Prazo: Baseline, 8-weeks

Participants will demonstrate a change in systolic blood pressure (mmHg), assessed as the average of two seated measurements obtained following two consecutive 5-minute rest periods, from baseline to post-intervention.

Baseline, 8-weeks
Change in executive cognitive functioning
Prazo: Baseline, 8 weeks

Participants will demonstrate a change in executive cognitive functioning, assessed using the Fluid Composite Score from the NIH Toolbox Cognition Battery. The Fluid Composite Score is derived from tasks assessing executive function, attention, working memory, episodic memory, and processing speed. Change in executive cognitive functioning will be evaluated as the difference in Fluid Composite Scores from baseline to post-intervention.

Baseline, 8 weeks

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Change from Baseline in Mood Symptoms (Depression) at 8 Weeks
Prazo: Baseline, 8 weeks

Participants will demonstrate a change in depression symptoms, assessed using the Patient Health Questionnaire-9 (PHQ-9) for depressive symptoms. Total scores of 5, 10, 15, and 20 represent cut off points for mild, moderate, moderately severe and severe depression. Change in symptoms will be evaluated as the difference in scores from baseline to 8 weeks, with higher scores indicating greater symptom severity.

Baseline, 8 weeks
Change from Baseline in Mood Symptoms (Anxiety) at 8 Weeks
Prazo: Baseline, 8 weeks

Participants will demonstrate a change in anxiety symptoms, assessed using the Geriatric Anxiety Scale-10 (GAS) for anxiety symptoms. Total scores range from 0 to 30, with higher scores indicating greater symptom severity. Change in symptoms will be evaluated as the difference in scores from baseline to 8 weeks, with higher scores indicating greater severity.

Baseline, 8 weeks
Change from Baseline in Sleep Quality at 8 Weeks
Prazo: Baseline, 8 weeks

Participants will demonstrate a change in sleep quality, measured using the Pittsburgh Sleep Quality Index (PSQI) and objective sleep measures collected via actigraphy (Fitbit) devices provided to participants. Change in sleep quality will be evaluated as the difference in PSQI global scores, with higher scores indicating poorer sleep quality, and sleep metrics compiled from actigraphy data from baseline to 8 weeks.

Baseline, 8 weeks
Change from Baseline in Inflammatory Markers (CRP, IL-6, TNF-α) at 8 Weeks
Prazo: Baseline, 8 weeks

Participants will demonstrate a change in inflammatory markers, assessed from fasting blood samples. Serum concentrations of CRP, IL-6, and TNF-α will be measured using standardized laboratory analyses. Change in inflammatory markers will be evaluated from baseline to 8 weeks.

Baseline, 8 weeks
Change from Baseline in Physical Functioning (Grip-Strength) at 8 Weeks
Prazo: Baseline, 8 weeks

Participants will demonstrate a change in physical functioning, assessed using grip strength. Change in physical functioning will be evaluated from baseline to 8 weeks based on performance across these standardized physical function measures. Higher grip strength performance indicate improved physical functioning.

Baseline, 8 weeks
Change from Baseline in Physical Functioning (Gait Speed) at 8 Weeks
Prazo: Baseline, 8 weeks

Participants will demonstrate a change in physical functioning, assessed using gait speed. Change in physical functioning will be evaluated from baseline to 8 weeks based on performance across these standardized physical function measures. Faster gait speed performance indicate improved physical functioning.

Baseline, 8 weeks
Change from Baseline in Physical Functioning (Sit-to-Stand) at 8 Weeks
Prazo: Baseline, 8 weeks

Participants will demonstrate a change in physical functioning, assessed using the sit-to-stand test. Change in physical functioning will be evaluated from baseline to 8 weeks based on performance across these standardized physical function measures. Improved sit-to-stand performance indicate improved physical functioning.

Baseline, 8 weeks

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Colaboradores

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Real)

17 de novembro de 2025

Conclusão Primária (Estimado)

1 de fevereiro de 2027

Conclusão do estudo (Estimado)

1 de fevereiro de 2027

Datas de inscrição no estudo

Enviado pela primeira vez

15 de janeiro de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

15 de janeiro de 2026

Primeira postagem (Real)

20 de janeiro de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

4 de novembro de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

2 de novembro de 2026

Última verificação

1 de novembro de 2026

Mais Informações

Termos relacionados a este estudo

Outros números de identificação do estudo

  • STUDY00006529

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

NÃO

Descrição do plano IPD

Individual participant data will not be shared to protect the privacy and confidentiality of the participants.

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Sim

produto fabricado e exportado dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .