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Mental Effort During Low Load Resistance Training in Older Adults

6 de julho de 2026 atualizado por: Garrett Hester, Kennesaw State University

The Effect of Maximal Mental Effort During Resistance Training on Physical Function and Motor Unit Behavior in Older Adults

The goal of this clinical trial is to determine the effect of maximal mental effort combined with low-intensity resistance training on strength and neuromuscular function in older adults. The main questions it aims to answer are:

  • Does low-intensity resistance training in combination with maximal mental effort increase strength more than low intensity resistance training alone?
  • Does low-intensity resistance training in combination with maximal mental effort improve neuromuscular function more than low intensity resistance training alone?

Participants will be randomly assigned to 1 of 3 groups:

  • Low intensity resistance training
  • Low intensity resistance training with maximal mental effort
  • Control Researchers will compare groups to determine differences in changes in strength, neuromuscular function, and body composition.

Visão geral do estudo

Status

Recrutamento

Condições

Intervenção / Tratamento

Descrição detalhada

Participants in both training groups will perform 8 weeks of low intensity, whole-body resistance training. Participants in the control group will participate in all testing procedures but not perform any training. Participants from all groups will be instructed to otherwise maintain their normal physical activity levels and dietary habits.

All training sessions will be supervised by research personnel at a Kennesaw State University fitness center. Participants will complete 2 training sessions per week for 8 weeks. Each training session will last about 45-60 minutes and consist of 5 exercises, including both multi-joint (leg press, chest press, back row) and single-joint (knee extension, bicep curl) exercises. Participants will perform 2 sets of 15 repetitions for each exercise for the first 2 weeks, then volume will be increased by progressing to 3 sets for the remaining 6 weeks. There will be a 60-second rest interval between sets and a similar tempo will be used between groups.

Both training groups will perform the same training protocol, but participants in the maximal mental effort group will mentally urge their muscles to contract maximally during each repetition. That is, despite using a low intensity, participants will imagine the feeling of maximal muscle contraction of the primary muscles during each repetition.

Several measures of strength, neuromuscular function, physical function, and body composition will be measured before and after the training or control period.

Tipo de estudo

Intervencional

Inscrição (Estimado)

75

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.

Contato de estudo

  • Nome: Garrett Hester Professor of Exercise Science
  • Número de telefone: 470-578-4267
  • E-mail: ghester4@kennesaw.edu

Locais de estudo

  • Estados Unidos
    • Georgia
      • Kennesaw, Georgia, Estados Unidos, 30144
        • Recrutamento
        • Kennesaw 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

  • Adulto mais velho

Aceita Voluntários Saudáveis

Sim

Descrição

Inclusion Criteria:

  • Body mass index between 18.5 - 33 kg·m2
  • No structured physical activity in past 2 years
  • Any unstable condition contradicting exercise
  • Independently walk with or without assistive device
  • No significant cognitive impairment

Exclusion Criteria:

  • Score of 22 or lower on Montreal Cognitive Assessment
  • Missing more than 3 training sessions (training groups only)
  • Pacemaker
  • Unstable angina
  • Symptomatic heart failure
  • Uncontrolled arrythmias
  • Uncontrolled hypertension (greater or equal to 160/90)
  • Myocardial infarction in the past 6 months
  • Uncontrolled type 2 diabetes
  • Type 1 diabetes
  • Severe or unstable pulmonary conditions,
  • Currently on supplemental oxygen therapy
  • Severe hearing loss or visual impairment
  • Alzheimer's Disease or significant cognitive impairment
  • Stroke in the past 6 months or ongoing stroke-induced motor impairment
  • Any neurological (e.g., Parkinson's) condition affecting motor control
  • Undergoing chemotherapy
  • Surgery in past 6 months
  • Musculoskeletal injury in the past 6 months
  • Terminal illness
  • Stage 3 or greater chronic kidney disease

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: Outro
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Solteiro

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Sem intervenção: Ao controle
Este grupo não realizará nenhum treinamento e manterá seu nível regular de atividade física.
Experimental: Low Intensity Resistance Training
This group will perform low intensity, whole-body resistance training.
Comportamental: Low Intensity Resistance Training
This training intervention will be 8 weeks of low intensity resistance training, including whole-body and isolated muscle exercises.
Experimental: Low Intensity Resistance Training with Maximal Mental Effort
This group will perform low intensity, whole-body resistance training with maximal mental effort during muscle contraction.
Comportamental: Low Intensity Resistance Training with Maximal Mental Effort
This training intervention will be 8 weeks of low intensity resistance training, including whole-body and isolated muscle exercises, where participants will perform maximal mental effort by imagining maximal muscle contraction during each exercise.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Change in isokinetic strength of the knee extensors at 60 degrees per second
Prazo: Baseline, Week 8
Dynamic strength of the knee extensors contracting at a constant velocity
Baseline, Week 8

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Change in isokinetic knee extensor muscle activation as measured by electromyography amplitude
Prazo: Baseline, Week 8
Electromyography root mean square during isokinetic contraction divided by root mean square during isometric contraction
Baseline, Week 8
Change in isometric knee extensor strength as measured by newton-meters of torque
Prazo: Baseline, Week 8
Isometric strength of a muscle
Baseline, Week 8
Change in knee extensor muscle activation as measured by electromyography amplitude
Prazo: Baseline, Week 8
A measure of the capacity at which the muscle is activated by the nervous system
Baseline, Week 8
Change in motor unit firing rate as measured relative to the motor unit recruitment threshold
Prazo: Baseline, Week 8
A measure of how nervous system input produces force output during an isometric contraction
Baseline, Week 8
Change in motor unit action potential size as measured relative to the motor unit recruitment threshold
Prazo: Baseline, Week 8
A measure of how nervous system input produces force output during an isometric contraction
Baseline, Week 8
Change in handgrip strength as measured in kilograms of force
Prazo: Baseline, Week 8
Upper-body strength as measured by a handgrip dynamometer
Baseline, Week 8
Change in walking speed as measured by time taken to walk 4 meters
Prazo: Baseline, Week 8
Measure of lower-body physical function
Baseline, Week 8
Change in chair rise performance as measured by number of chair rises performed in 30 seconds
Prazo: Baseline, Week 8
Measure of lower-body physical function
Baseline, Week 8
Change in bicep curl strength as measured by load lifted in pounds
Prazo: Baseline, Week 8
Maximum dumbbell load lifted successfully throughout the range of motion of a bicep curl
Baseline, Week 8
Change in dynamic strength of the lower body muscles during the leg press as measured by load lifted in pounds for 5 repetitions
Prazo: Baseline, Week 5, Week 8
Measure of dynamic strength during the leg press exercise
Baseline, Week 5, Week 8
Change in muscle composition as measured by ultrasound-derived grey-scale analysis
Prazo: Baseline, Week 8
Echo-intensity value derived from grey-scale analysis is indicative of amount of non-contractile tissue in muscle
Baseline, Week 8
Change in skeletal muscle size as measured by ultrasound-derived cross-sectional area
Prazo: Baseline, Week 8
Size of a muscle
Baseline, Week 8
Change in fat mass as measured by kilograms
Prazo: Baseline, Week 8
Amount of fat tissue a person possesses estimated by bioelectrical impedance analysis
Baseline, Week 8
Change in fat-free mass as measured by kilograms
Prazo: Baseline, Week 8
Amount of non-fat tissue a person possesses estimated by bioelectrical impedance analysis
Baseline, Week 8
Change in body fat percentage as measured by fat tissue relative to fat-free tissue
Prazo: Baseline, Week 8
Relative amount of body fat a person possesses estimated by bioelectrical impedance analysis
Baseline, Week 8
Change in cognitive function as measured by the Montreal Cognitive Assessment
Prazo: Baseline, Week 8
Assessment of cognitive function where 0 is the lowest score and 30 is the highest score and a higher score represents higher cognitive function.
Baseline, Week 8

Colaboradores e Investigadores

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

Patrocinador

Kennesaw State University

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)

6 de junho de 2026

Conclusão Primária (Estimado)

1 de dezembro de 2027

Conclusão do estudo (Estimado)

1 de dezembro de 2027

Datas de inscrição no estudo

Enviado pela primeira vez

30 de junho de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

30 de junho de 2026

Primeira postagem (Real)

7 de julho de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

8 de julho de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

6 de julho de 2026

Última verificação

1 de julho de 2026

Mais Informações

Termos relacionados a este estudo

Palavras-chave

Termos MeSH relevantes adicionais

Outros números de identificação do estudo

  • 2026-Hester

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

NÃO

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

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 .

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