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Effects of Exercise Frequency on Muscle Size and Strength in Healthy, Untrained Young Adults (FREQ)

11 août 2026 mis à jour par: Cameron Mitchell
Resistance training (RT) is important for building and maintaining healthy muscles. An exercise frequency called "exercise snacks" involves short bursts of exercise throughout the day (~5-15 minutes), but no studies have examined a gym-based RT exercise snack program. The invetigators will randomize 40 participants into one of two groups for 10 weeks: the control group will complete two full-body workouts per week (standard-frequency) and the experimental group will complete 10 mini-workouts per week (high-frequency). Muscle hypertrophy (size) and strength will be measured before and after the exercise program to determine if the participants had the same or different results.

Aperçu de l'étude

Statut

Recrutement

Les conditions

Intervention / Traitement

Type d'étude

Interventionnel

Inscription (Estimé)

40

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Lieux d'étude

  • Canada
    • British Columbia
      • Vancouver, British Columbia, Canada, V6T 1Z1
        • Recrutement
        • University of British Columbia | Gateway Health Building
        • Contact:
        • Contact:
        • Sous-enquêteur:
          • Haley Dennis, MSc

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

  • Adulte

Accepte les volontaires sains

Oui

La description

Inclusion Criteria:

  • Can fluently read and write in English
  • Lives, works, and/or studies at or near the Gateway Health Building (where all study visits will occur)
  • Willing and able to commit to 2 or 10 in-person training sessions per week for 10 continuous weeks, as well as one week of testing before the training period and one week of testing after the training period
  • Has continuous access to smartphone or other device that they can use to access the Technogym app
  • Answers "No" to all questions on the Canadian Society for Exercise Physiology - Get Active Questonnaire (CSEP-GAQ) or has their doctor's approval to participate

Exclusion Criteria:

  • Any major uncontrolled cardiovascular, muscular, metabolic, and/or neurological disorders
  • Lung disease, kidney disease, or liver disease
  • Current diagnosis of type 1 diabetes, type 2 diabetes, or cancer
  • Medical conditions that limit their ability to undertake strenuous physical activity
  • Regular use of any medications that may affect muscle physiology or body composition (i.e. benzodiazepines, hormone replacement therapy, ADHD medication, Metformin, Ozempic)
  • Participated in consistent resistance exercise training more than twice per month in the previous 12 months
  • Participated in consistent moderate or vigorous aerobic training more than twice per week in the previous 12 months, or planning to start consistent training in the next few months
  • Significant gain or loss of body mass in the past 6 months (greater than 2 kg)
  • Current smoker (including but not limited to cigarettes, e-cigarettes, or vaping)
  • Body Mass Index of less than 18 kg/m2 or over 30 kg/m2
  • Pregnancy or breastfeeding
  • Currently taking blood thinners
  • Allergic to Tegaderm medical tape (used with the activity trackers)

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Science basique
  • Répartition: Randomisé
  • Modèle interventionnel: Affectation parallèle
  • Masquage: Aucun (étiquette ouverte)

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Comparateur actif: Standard-frequency resistance training
Comportemental: Two sessions per week of resistance training
Full-body resistance training consisting of 10 sets per week for all major muscle groups with progressive overload in a gym-based setting. Training at an exercise frequency of two sessions per week (around 45-60 minutes per session).
Expérimental: High-frequency resistance training
Comportemental: 10 sessions per week of resistance training
Full-body resistance training consisting of 10 sets per week for all major muscle groups with progressive overload in a gym-based setting. Training at an exercise frequency of 10 brief sessions per week (around 8-12 minutes per session).

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Délai
Change in Total Body Skeletal Muscle Mass Measured using the D3-Creatine Dilution Method
Délai: From enrolment (Week 1) to the end of the exercise training phase (Week 12)
From enrolment (Week 1) to the end of the exercise training phase (Week 12)

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Change in Total Body Muscle Size Measured as Cross-sectional Area using Muscle Ultrasound Imaging
Délai: From enrolment (Week 1) to the end of the exercise training phase (Week 12)
Muscle ultrasound imaging will be conducted on one randomly selected side of the body (left or right) for each participant. Scans will be analyzed to determine the cross-sectional area of the following seven muscles: rectus femoris, vastus lateralis, biceps brachii, pectoralis major, latissimus dorsi, triceps brachii, and hamstring group (semitendinosus, semimembranosus, and long head of biceps femoris).
From enrolment (Week 1) to the end of the exercise training phase (Week 12)
Change in Muscle Strength Measured as the One-Repetition Maximum of Back Squat and Bench Press
Délai: From enrolment (Week 1) to the end of the exercise training phase (Week 12)
One-repetition maximums will be measured using a Quantum Synchro Smith Machine.
From enrolment (Week 1) to the end of the exercise training phase (Week 12)
Change in Skeletal Muscle Power Measured at Various Relative Loads for Back Squat and Bench Press
Délai: From enrolment (Week 1) to the end of the exercise training phase (Week 12)
At enrolment (Week 1), power will be measured using a Quantum Synchro Smith Machine at 40%, 50%, 60%, 70%, and 80% of the participant's initial one-repetition maximum (1RM) for back squat and bench press. At the end of the exercise training phase (Week 12), if a participant's 1RM has increased by less than 25%, power will be measured at the same relative loads. If a participant's 1RM has increased by 25-49%, power will be measured at 50%, 60%, 70%, 80%, and 90% of the participant's initial 1RM (in this case, 90% of the participant's initial 1RM would not exceed 80% of the participant's post-training 1RM). If a participant's 1RM has increased by 50% or greater, power will be measured at 60%, 70%, 80%, 90%, and 100% of the participant's initial 1RM (in this case, 100% of the participant's initial 1RM would not exceed 80% of the participant's post-training 1RM).
From enrolment (Week 1) to the end of the exercise training phase (Week 12)
Participant Satisfaction with the Exercise Program
Délai: At the end of the exercise training phase (Week 12)
Participant satisfaction with the exercise program will be measured using a modified Intrinsic Motivation Inventory (subscales of "Interest/Enjoyment", "Percieved Competence", "Effort/Importance", and "Value/Usefullness").
At the end of the exercise training phase (Week 12)

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Cameron Mitchell

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

12 août 2026

Achèvement primaire (Estimé)

1 juin 2027

Achèvement de l'étude (Estimé)

1 juin 2027

Dates d'inscription aux études

Première soumission

7 août 2026

Première soumission répondant aux critères de contrôle qualité

7 août 2026

Première publication (Réel)

12 août 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

13 août 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

11 août 2026

Dernière vérification

1 août 2026

Plus d'information

Termes liés à cette étude

Mots clés

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • H26-01331

Plan pour les données individuelles des participants (IPD)

Prévoyez-vous de partager les données individuelles des participants (DPI) ?

NON

Description du régime IPD

The dataset will contain potentially identifying information (age, height, and weight) of people in a relatively small geographic area, so individual participant data will not be shared with other researchers.

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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