Effects of Exercise Frequency on Muscle Size and Strength in Healthy, Untrained Young Adults (FREQ)
11 de agosto de 2026 actualizado por: 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.
Descripción general del estudio
Estado
Reclutamiento
Condiciones
Intervención / Tratamiento
Tipo de estudio
Intervencionista
Inscripción (Estimado)
40
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: Cameron Mitchell, PhD
- Número de teléfono: 604-827-2072
- Correo electrónico: cameron.mitchell@ubc.ca
Ubicaciones de estudio
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British Columbia
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Vancouver, British Columbia, Canadá, V6T 1Z1
- Reclutamiento
- University of British Columbia | Gateway Health Building
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Contacto:
- Cameron Mitchell, PhD
- Número de teléfono: 604-827-2072
- Correo electrónico: cameron.mitchell@ubc.ca
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Contacto:
- Correo electrónico: hdennis@student.ubc.ca
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Sub-Investigador:
- Haley Dennis, MSc
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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
Acepta Voluntarios Saludables
Sí
Descripción
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 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: Ciencia básica
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Ninguno (etiqueta abierta)
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
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Comparador activo: Standard-frequency resistance training
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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).
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Experimental: High-frequency resistance training
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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).
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Periodo de tiempo |
|---|---|
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Change in Total Body Skeletal Muscle Mass Measured using the D3-Creatine Dilution Method
Periodo de tiempo: From enrolment (Week 1) to the end of the exercise training phase (Week 12)
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From enrolment (Week 1) to the end of the exercise training phase (Week 12)
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Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Change in Total Body Muscle Size Measured as Cross-sectional Area using Muscle Ultrasound Imaging
Periodo de tiempo: From enrolment (Week 1) to the end of the exercise training phase (Week 12)
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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).
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From enrolment (Week 1) to the end of the exercise training phase (Week 12)
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Change in Muscle Strength Measured as the One-Repetition Maximum of Back Squat and Bench Press
Periodo de tiempo: From enrolment (Week 1) to the end of the exercise training phase (Week 12)
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One-repetition maximums will be measured using a Quantum Synchro Smith Machine.
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From enrolment (Week 1) to the end of the exercise training phase (Week 12)
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Change in Skeletal Muscle Power Measured at Various Relative Loads for Back Squat and Bench Press
Periodo de tiempo: From enrolment (Week 1) to the end of the exercise training phase (Week 12)
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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).
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From enrolment (Week 1) to the end of the exercise training phase (Week 12)
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Participant Satisfaction with the Exercise Program
Periodo de tiempo: At the end of the exercise training phase (Week 12)
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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").
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At the end of the exercise training phase (Week 12)
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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)
12 de agosto de 2026
Finalización primaria (Estimado)
1 de junio de 2027
Finalización del estudio (Estimado)
1 de junio de 2027
Fechas de registro del estudio
Enviado por primera vez
7 de agosto de 2026
Primero enviado que cumplió con los criterios de control de calidad
7 de agosto de 2026
Publicado por primera vez (Actual)
12 de agosto de 2026
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
13 de agosto de 2026
Última actualización enviada que cumplió con los criterios de control de calidad
11 de agosto de 2026
Última verificación
1 de agosto de 2026
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- H26-01331
Plan de datos de participantes individuales (IPD)
¿Planea compartir datos de participantes individuales (IPD)?
NO
Descripción del plan 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.
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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