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Mental Effort During Low Load Resistance Training in Older Adults

6 luglio 2026 aggiornato da: 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.

Panoramica dello studio

Stato

Reclutamento

Condizioni

Intervento / Trattamento

Descrizione dettagliata

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 di studio

Interventistico

Iscrizione (Stimato)

75

Fase

  • Non applicabile

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

  • Nome: Garrett Hester Professor of Exercise Science
  • Numero di telefono: 470-578-4267
  • Email: ghester4@kennesaw.edu

Luoghi di studio

  • Stati Uniti
    • Georgia
      • Kennesaw, Georgia, Stati Uniti, 30144
        • Reclutamento
        • Kennesaw State University
        • Contatto:

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Adulto più anziano

Accetta volontari sani

Sì

Descrizione

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

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Altro
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Separare

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Nessun intervento: Controllo
Questo gruppo non effettuerà alcun allenamento e manterrà il regolare livello di attività fisica.
Sperimentale: Low Intensity Resistance Training
This group will perform low intensity, whole-body resistance training.
Comportamentale: Low Intensity Resistance Training
This training intervention will be 8 weeks of low intensity resistance training, including whole-body and isolated muscle exercises.
Sperimentale: 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.
Comportamentale: 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.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Change in isokinetic strength of the knee extensors at 60 degrees per second
Lasso di tempo: Baseline, Week 8
Dynamic strength of the knee extensors contracting at a constant velocity
Baseline, Week 8

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Change in isokinetic knee extensor muscle activation as measured by electromyography amplitude
Lasso di tempo: 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
Lasso di tempo: Baseline, Week 8
Isometric strength of a muscle
Baseline, Week 8
Change in knee extensor muscle activation as measured by electromyography amplitude
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: Baseline, Week 8
Measure of lower-body physical function
Baseline, Week 8
Change in bicep curl strength as measured by load lifted in pounds
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: Baseline, Week 8
Size of a muscle
Baseline, Week 8
Change in fat mass as measured by kilograms
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Kennesaw State University

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Effettivo)

6 giugno 2026

Completamento primario (Stimato)

1 dicembre 2027

Completamento dello studio (Stimato)

1 dicembre 2027

Date di iscrizione allo studio

Primo inviato

30 giugno 2026

Primo inviato che soddisfa i criteri di controllo qualità

30 giugno 2026

Primo Inserito (Effettivo)

7 luglio 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

8 luglio 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

6 luglio 2026

Ultimo verificato

1 luglio 2026

Maggiori informazioni

Termini relativi a questo studio

Parole chiave

Termini MeSH pertinenti aggiuntivi

Altri numeri di identificazione dello studio

  • 2026-Hester

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

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