Mental Effort During Low Load Resistance Training in Older Adults
6 de julio de 2026 actualizado 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.
Descripción general del estudio
Estado
Reclutamiento
Condiciones
Descripción detallada
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 estudio
Intervencionista
Inscripción (Estimado)
75
Fase
- No aplica
Contactos y Ubicaciones
Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.
Estudio Contacto
- Nombre: Garrett Hester Professor of Exercise Science
- Número de teléfono: 470-578-4267
- Correo electrónico: ghester4@kennesaw.edu
Ubicaciones de estudio
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Georgia
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Kennesaw, Georgia, Estados Unidos, 30144
- Reclutamiento
- Kennesaw State University
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Contacto:
- Garrett Hester
- Número de teléfono: 470-578-4267
- Correo electrónico: ghester4@kennesaw.edu
-
-
Criterios de participación
Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.
Criterio de elegibilidad
Edades elegibles para estudiar
- Adulto Mayor
Acepta Voluntarios Saludables
Sí
Descripción
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
Plan de estudios
Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Otro
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Único
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
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Sin intervención: Control
Este grupo no realizará ningún entrenamiento y mantendrá su nivel habitual de actividad física.
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Experimental: Low Intensity Resistance Training
This group will perform low intensity, whole-body resistance training.
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This training intervention will be 8 weeks of low intensity resistance training, including whole-body and isolated muscle exercises.
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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.
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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.
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Change in isokinetic strength of the knee extensors at 60 degrees per second
Periodo de tiempo: Baseline, Week 8
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Dynamic strength of the knee extensors contracting at a constant velocity
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Baseline, Week 8
|
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Change in isokinetic knee extensor muscle activation as measured by electromyography amplitude
Periodo de tiempo: Baseline, Week 8
|
Electromyography root mean square during isokinetic contraction divided by root mean square during isometric contraction
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Baseline, Week 8
|
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Change in isometric knee extensor strength as measured by newton-meters of torque
Periodo de tiempo: Baseline, Week 8
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Isometric strength of a muscle
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Baseline, Week 8
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Change in knee extensor muscle activation as measured by electromyography amplitude
Periodo de tiempo: Baseline, Week 8
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A measure of the capacity at which the muscle is activated by the nervous system
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Baseline, Week 8
|
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Change in motor unit firing rate as measured relative to the motor unit recruitment threshold
Periodo de tiempo: Baseline, Week 8
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A measure of how nervous system input produces force output during an isometric contraction
|
Baseline, Week 8
|
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Change in motor unit action potential size as measured relative to the motor unit recruitment threshold
Periodo de tiempo: Baseline, Week 8
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A measure of how nervous system input produces force output during an isometric contraction
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Baseline, Week 8
|
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Change in handgrip strength as measured in kilograms of force
Periodo de tiempo: Baseline, Week 8
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Upper-body strength as measured by a handgrip dynamometer
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Baseline, Week 8
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Change in walking speed as measured by time taken to walk 4 meters
Periodo de tiempo: Baseline, Week 8
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Measure of lower-body physical function
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Baseline, Week 8
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Change in chair rise performance as measured by number of chair rises performed in 30 seconds
Periodo de tiempo: Baseline, Week 8
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Measure of lower-body physical function
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Baseline, Week 8
|
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Change in bicep curl strength as measured by load lifted in pounds
Periodo de tiempo: Baseline, Week 8
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Maximum dumbbell load lifted successfully throughout the range of motion of a bicep curl
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Baseline, Week 8
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Change in dynamic strength of the lower body muscles during the leg press as measured by load lifted in pounds for 5 repetitions
Periodo de tiempo: Baseline, Week 5, Week 8
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Measure of dynamic strength during the leg press exercise
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Baseline, Week 5, Week 8
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Change in muscle composition as measured by ultrasound-derived grey-scale analysis
Periodo de tiempo: Baseline, Week 8
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Echo-intensity value derived from grey-scale analysis is indicative of amount of non-contractile tissue in muscle
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Baseline, Week 8
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Change in skeletal muscle size as measured by ultrasound-derived cross-sectional area
Periodo de tiempo: Baseline, Week 8
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Size of a muscle
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Baseline, Week 8
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Change in fat mass as measured by kilograms
Periodo de tiempo: Baseline, Week 8
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Amount of fat tissue a person possesses estimated by bioelectrical impedance analysis
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Baseline, Week 8
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Change in fat-free mass as measured by kilograms
Periodo de tiempo: Baseline, Week 8
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Amount of non-fat tissue a person possesses estimated by bioelectrical impedance analysis
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Baseline, Week 8
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Change in body fat percentage as measured by fat tissue relative to fat-free tissue
Periodo de tiempo: Baseline, Week 8
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Relative amount of body fat a person possesses estimated by bioelectrical impedance analysis
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Baseline, Week 8
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Change in cognitive function as measured by the Montreal Cognitive Assessment
Periodo de tiempo: Baseline, Week 8
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Assessment of cognitive function where 0 is the lowest score and 30 is the highest score and a higher score represents higher cognitive function.
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Baseline, Week 8
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Colaboradores e Investigadores
Aquí es donde encontrará personas y organizaciones involucradas en este estudio.
Patrocinador
Fechas de registro del estudio
Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.
Fechas importantes del estudio
Inicio del estudio (Actual)
6 de junio de 2026
Finalización primaria (Estimado)
1 de diciembre de 2027
Finalización del estudio (Estimado)
1 de diciembre de 2027
Fechas de registro del estudio
Enviado por primera vez
30 de junio de 2026
Primero enviado que cumplió con los criterios de control de calidad
30 de junio de 2026
Publicado por primera vez (Actual)
7 de julio de 2026
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
8 de julio de 2026
Última actualización enviada que cumplió con los criterios de control de calidad
6 de julio de 2026
Última verificación
1 de julio de 2026
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- 2026-Hester
Plan de datos de participantes individuales (IPD)
¿Planea compartir datos de participantes individuales (IPD)?
NO
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
No
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
No
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