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Acute Blood Flow Restriction Walking on Immune Cell Phenotype and Function

3 de noviembre de 2026 actualizado por: Jonathan Little, University of British Columbia

Impact of Acute Blood Flow Restriction Walking on Immune Cell Phenotype and Function in Adults withT2D

To conduct a randomized control trial to determine the impact of acute blood flow restriction treadmill walking on immune cell counts, function, and phenotype in adults living with type 2 diabetes.

Descripción general del estudio

Estado

Reclutamiento

Condiciones

Intervención / Tratamiento

Descripción detallada

Participants will be randomized to a regular treadmill walking condition or treadmill walking with blood flow restriction (BFR) condition. In both groups participants will complete 32 minutes of treadmill walking at a speed and grade that elicit 40-50% heart rate reserve. In the BFR group the cuffs will be inflated based on each participants individualized limb occlusion pressure (LOP). The cuffs will remain inflated for the entire session but will deflate for 1 minute every 10 minutes based on safety recommendations. The percentage of LOP will 60%. Blood samples will be obtained pre-exercise (PRE), during the final 2 minutes of the final occlusion cycle (OCC), and 3 minutes into the recovery period post-exercise (POST) to measure outcomes.

Tipo de estudio

Intervencionista

Inscripción (Estimado)

20

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: Jonathan P Little, PhD
  • Número de teléfono: 250-807-9876
  • Correo electrónico: jonathan.little@ubc.ca

Ubicaciones de estudio

    • British Columbia
      • Kelowna, British Columbia, Canadá, V1V 1V7
        • Reclutamiento
        • University of British Columbia Okanagan
        • Contacto:

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

19 años a 64 años (Adulto)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Descripción

Inclusion Criteria:

  • Aged 19-64 years
  • Diagnosed with type 2 diabetes with current HbA1c 5.7-9.0%
  • Completing <150 minutes of moderate-vigorous physical activity per week.

Exclusion Criteria:

  • Chronic musculoskeletal condition or recent (within 2 years) cardiovascular event preventing participation in exercise.
  • Unstable type 2 diabetes medication of the last 3 months
  • Absolute contraindications to BFR (i.e., peripheral vascular disease)
  • A self-reported diagnosis of low iron concentrations, anemia, or being treated for these conditions
  • A diagnosis of any red blood cell-altering condition (i.e., sickle cell anemia, poikilocytosis)
  • Currently living with any cardiovascular disease, which would impact the ability to participate in exercise safely
  • Currently prescribed any medication which would impact the ability to use a heart rate monitor to accurately track intensity

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
Experimental: Treadmill walking with blood flow restriction

Treadmill walking with blood flow restriction.

Participants will complete 32 minutes of treadmill walking at a speed and grade that elicit 40-50% heart rate reserve. The cuffs will be inflated based on each participants individualized limb occlusion pressure (LOP). The cuffs will remain inflated for the entire session but will deflate for 1 minute every 10 minutes based on safety recommendations. The percentage of LOP will 60%.

Comparador activo: Treadmill Walking

Treadmill walking.

Participants will complete 32 minutes of treadmill walking at a speed and grade that elicit 40-50% heart rate reserve.

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Change in white blood cell count before, during, and after exercise.
Periodo de tiempo: Pre-exercise, during 32 minute of exercise, immediately post-exercise

The white blood cell count will be measured using a hematology analyzer before, during, and after exercise.

Pre-exercise, during 32 minute of exercise, immediately post-exercise

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Change in monocyte count before, during, and after exercise
Periodo de tiempo: Pre-exercise, during 32 minute of exercise, immediately post-exercise

The monocyte count will be measured using a hematology analyzer before, during, and after exercise.

Pre-exercise, during 32 minute of exercise, immediately post-exercise
Change in neutrophil count before, during, and after exercise
Periodo de tiempo: Pre-exercise, during 32 minute of exercise, immediately post-exercise

The neutrophil count will be measured using a hematology analyzer before, during, and after exercise.

Pre-exercise, during 32 minute of exercise, immediately post-exercise
Change in eosinophil count before, during, and after exercise
Periodo de tiempo: Pre-exercise, during 32 minute of exercise, immediately post-exercise

The eosinophil count will be measured using a hematology analyzer before, during, and after exercise.

Pre-exercise, during 32 minute of exercise, immediately post-exercise
Change in CD66b+ expression before, during, and after exercise
Periodo de tiempo: Pre-exercise, during 32 minute of exercise, immediately post-exercise

The CD66b+ expression will be measured using flow cytometry before, during, and after exercise.

Pre-exercise, during 32 minute of exercise, immediately post-exercise
Change in CD11b+ expression before, during, and after exercise
Periodo de tiempo: Pre-exercise, during 32 minute of exercise, immediately post-exercise

The CD11b+ expression will be measured using flow cytometer before, during, and after exercise

Pre-exercise, during 32 minute of exercise, immediately post-exercise
Change in CD63+ expression before, during, and after exercise
Periodo de tiempo: Pre-exercise, during 32 minute of exercise, immediately post-exercise

The CD63+ expression will be measured using flow cytometry before, during, and after exercise.

Pre-exercise, during 32 minute of exercise, immediately post-exercise
Change in % of classical monocytes before, during, and after exercise
Periodo de tiempo: Pre-exercise, during 32 minute of exercise, immediately post-exercise

The % of classical monocytes will be measured using flow cytometry before, during, and after exercise.

Pre-exercise, during 32 minute of exercise, immediately post-exercise
Change in % of intermediate monocytes before, during, and after exercise
Periodo de tiempo: Pre-exercise, during 32 minute of exercise, immediately post-exercise

The % of intermediate monocytes will be measured using flow cytometry before, during, and after exercise.

Pre-exercise, during 32 minute of exercise, immediately post-exercise
Change in % of non-classical monocytes before, during, and after exercise
Periodo de tiempo: Pre-exercise, during 32 minute of exercise, immediately post-exercise

The % of non-classical monocytes will be measured using flow cytometry before, during, and after exercise.

Pre-exercise, during 32 minute of exercise, immediately post-exercise
Change in TLR-4 expression on classical monocytes before, during, and after exercise
Periodo de tiempo: Pre-exercise, during 32 minute of exercise, immediately post-exercise

The TLR-4 expression on classical monocytes will be measured using flow cytometry before, during, and after exercise.

Pre-exercise, during 32 minute of exercise, immediately post-exercise
Change in TLR-4 expression on intermediate monocytes before, during, and after exercise
Periodo de tiempo: Pre-exercise, during 32 minute of exercise, immediately post-exercise

The TLR-4 expression on intermediate monocytes will be measured using flow cytometry before, during, and after exercise.

Pre-exercise, during 32 minute of exercise, immediately post-exercise
Change in TLR-4 expression on non-classical monocytes before, during, and after exercise
Periodo de tiempo: Pre-exercise, during 32 minute of exercise, immediately post-exercise

The TLR-4 expression on non-classical monocytes will be measured using flow cytometry before, during, and after exercise.

Pre-exercise, during 32 minute of exercise, immediately post-exercise
Change in plasma IL-6 before, during, and after exercise
Periodo de tiempo: Pre-exercise, during 32 minute of exercise, immediately post-exercise

The plasma IL-6 concentration will be measured using a multiplex assay before, during, and after exercise

Pre-exercise, during 32 minute of exercise, immediately post-exercise
Change in plasma IL-10 before, during, and after exercise
Periodo de tiempo: Pre-exercise, during 32 minute of exercise, immediately post-exercise

The plasma IL-10 concentration will be measured using a multiplex assay before, during, and after exercise.

Pre-exercise, during 32 minute of exercise, immediately post-exercise
Change in plasma TNF-α before, during, and after exercise
Periodo de tiempo: Pre-exercise, during 32 minute of exercise, immediately post-exercise

The plasma TNF-α concentration will be measured using a multiplex assay before, during, and after exercise

Pre-exercise, during 32 minute of exercise, immediately post-exercise
Change in 4-h LPS-induced TNF-α before and after exercise
Periodo de tiempo: Pre-exercise, immediately post-exercise

The LPS-induced TNF-α concentration will be measured from whole-blood culture supernatant using an ELISA before and after exercise.

Pre-exercise, immediately post-exercise
Change in 4-h LPS+IL10-induced TNF-α before and after exercise
Periodo de tiempo: Pre-exercise, immediately post-exercise

The LPS+IL10-induced TNF-α concentration will be measured from whole-blood culture supernatant using an ELISA before and after exercise.

Pre-exercise, immediately post-exercise

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)

11 de febrero de 2026

Finalización primaria (Estimado)

31 de diciembre de 2027

Finalización del estudio (Estimado)

31 de diciembre de 2027

Fechas de registro del estudio

Enviado por primera vez

23 de junio de 2026

Primero enviado que cumplió con los criterios de control de calidad

3 de noviembre de 2026

Publicado por primera vez (Actual)

10 de noviembre de 2026

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

10 de noviembre de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

3 de noviembre de 2026

Última verificación

1 de noviembre de 2026

Más información

Términos relacionados con este estudio

Otros números de identificación del estudio

  • H25-02870 acute

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

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .