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6-Weeks of Blood Flow Restriction Training on Immune Cell Function and Bioenergetics

23. června 2026 aktualizováno: Jonathan Little, University of British Columbia

Impact of 6-Weeks of Blood Flow Restriction Training on Immune Cell Function and Bioenergetics in Adults withT2D

To conduct a randomized control trial to determine the impact of 6-weeks of blood flow restriction training on immune cell function and bioenergetics in adults living with type 2 diabetes.

Přehled studie

Postavení

Nábor

Podmínky

Intervence / Léčba

Detailní popis

Participants will be randomized to a regular treadmill walking group or treadmill walking with blood flow restriction (BFR) group for 6 weeks. In both groups participants will complete treadmill walking on 3 days per week for 6 weeks. During week 1 participants will walk for 21 minutes during each session which will be increased to 32 minutes for the remaining 5 weeks of the study. In both groups the treadmill speed and grade will be set to 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 progressively increase over the course of the intervention. Weeks 1 and 2 will be completed at 60% LOP, after which pressure will increase by 5% each subsequent week, corresponding to 65%, 70%, 75%, and 80% LOP during weeks 3, 4, 5, and 6, respectively. All outcomes will be assessed at baseline before randomization and at the end of the 6-week intervention.

Typ studie

Intervenční

Zápis (Odhadovaný)

20

Fáze

  • Nelze použít

Kontakty a umístění

Tato část poskytuje kontaktní údaje pro ty, kteří studii provádějí, a informace o tom, kde se tato studie provádí.

Studijní kontakt

Studijní místa

    • British Columbia
      • Kelowna, British Columbia, Kanada, V1V 1V7
        • Nábor
        • University of British Columbia Okanagan
        • Kontakt:

Kritéria účasti

Výzkumníci hledají lidi, kteří odpovídají určitému popisu, kterému se říká kritéria způsobilosti. Některé příklady těchto kritérií jsou celkový zdravotní stav osoby nebo předchozí léčba.

Kritéria způsobilosti

Věk způsobilý ke studiu

  • Dospělý

Přijímá zdravé dobrovolníky

Ne

Popis

Inclusion Criteria:

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

Exclusion Criteria:

A. Chronic musculoskeletal condition or recent (within 2 years) cardiovascular event preventing participation in exercise.

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

Studijní plán

Tato část poskytuje podrobnosti o studijním plánu, včetně toho, jak je studie navržena a co studie měří.

Jak je studie koncipována?

Detaily designu

  • Primární účel: Základní věda
  • Přidělení: Randomizované
  • Intervenční model: Paralelní přiřazení
  • Maskování: Žádné (otevřený štítek)

Zbraně a zásahy

Skupina účastníků / Arm
Intervence / Léčba
Experimentální: Treadmill walking with blood flow restriction
Treadmill walking with blood flow restriction performed 3 days per week for 6 weeks.
In both groups participants will complete treadmill walking on 3 days per week for 6 weeks. During the first week participants will walk continuously for 21 minutes during each training session which will be increased to 32 minutes per training session for weeks 2-6. In both groups the treadmill speed and grade will be set to 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 min every 10 min based on safety recommendations. The percentage of LOP will progressively increase over the course of the intervention. Weeks 1 and 2 will be completed at 60% LOP, after which pressure will increase by 5% each subsequent week, corresponding to 65%, 70%, 75%, and 80% LOP during weeks 3, 4, 5, and 6, respectively.
Aktivní komparátor: Treadmill Walking
Treadmill walking performed 3 days per week for 6 weeks.
In both groups participants will complete treadmill walking on 3 days per week for 6 weeks. During the first week participants will walk continuously for 21 minutes during each training session which will be increased to 32 minutes per training session for weeks 2-6. In both groups the treadmill speed and grade will be set to 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 min every 10 min based on safety recommendations. The percentage of LOP will progressively increase over the course of the intervention. Weeks 1 and 2 will be completed at 60% LOP, after which pressure will increase by 5% each subsequent week, corresponding to 65%, 70%, 75%, and 80% LOP during weeks 3, 4, 5, and 6, respectively.

Co je měření studie?

Primární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Change in T-cell oxygen consumption rate (OCR) measured before and after the 6-week intervention
Časové okno: 0-6 weeks
T-cell OCR will be measured using a Seahorse Analyzer at baseline and after the 6-week intervention.
0-6 weeks

Sekundární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Change in CD4 expression before and after the 6-week intervention
Časové okno: 0-6 weeks
The CD4 expression will be measured using flow cytometry at baseline and after the 6-week intervention.
0-6 weeks
Change in CD8 expression before and after the 6-week intervention
Časové okno: The CD8 expression will be measured using flow cytometry at baseline and after the 6-week intervention.
0-6 weeks
The CD8 expression will be measured using flow cytometry at baseline and after the 6-week intervention.
Change in % of T regulatory cells before and after the 6-week intervention
Časové okno: 0-6 weeks
The % T regulatory cells will be measured using flow cytometry at baseline and after the 6-week intervention.
0-6 weeks
Change in % of Th1 cells before and after the 6-week intervention
Časové okno: 0-6 weeks
The % Th1 cells will be measured using flow cytometry at baseline and after the 6-week intervention.
0-6 weeks
Change in % of Th2 cells before and after the 6-week intervention
Časové okno: The % Th2 cells will be measured using flow cytometry at baseline and after the 6-week intervention.
0-6 weeks
The % Th2 cells will be measured using flow cytometry at baseline and after the 6-week intervention.
Change in % of Th17 cells before and after the 6-week intervention
Časové okno: 0-6 weeks
The % Th17 cells will be measured using flow cytometry at baseline and after the 6-week intervention.
0-6 weeks
Change in CD66b+ expression before and after the 6-week intervention
Časové okno: The CD66b+ expression will be measured using flow cytometry at baseline and after the 6-week intervention.
0-6 weeks
The CD66b+ expression will be measured using flow cytometry at baseline and after the 6-week intervention.
Change in CD11b+ expression before and after the 6-week intervention
Časové okno: The CD11b+ expression will be measured using flow cytometry at baseline and after the 6-week intervention.
0-6 weeks
The CD11b+ expression will be measured using flow cytometry at baseline and after the 6-week intervention.
Change in CD63+ expression before and after the 6-week intervention
Časové okno: 0-6 weeks
The CD63+ expression will be measured using flow cytometry at baseline and after the 6-week intervention.
0-6 weeks
Change in % of classical monocytes before and after the 6-week intervention
Časové okno: 0-6 weeks
The % of classical monocytes will be measured using flow cytometry at baseline and after the 6-week intervention.
0-6 weeks
Change in % of intermediate monocytes before and after the 6-week intervention
Časové okno: 0-6 weeks
The % of intermediate monocytes will be measured using flow cytometry at baseline and after the 6-week intervention.
0-6 weeks
Change in % of non-classical monocytes before and after the 6-week intervention
Časové okno: 0-6 weeks
The % of non-classical monocytes will be measured using flow cytometry at baseline and after the 6-week intervention.
0-6 weeks
Change in TLR-4 expression on classical monocytes before and after the 6-week intervention
Časové okno: 0-6 weeks
The TLR-4 expression on classical monocytes will be measured using flow cytometry at baseline and after the 6-week intervention.
0-6 weeks
Change in TLR-4 expression on intermediate monocytes before and after the 6-week intervention
Časové okno: 0-6 weeks
The TLR-4 expression on intermediate monocytes will be measured using flow cytometry at baseline and after the 6-week intervention.
0-6 weeks
Change in TLR-4 expression on non-classical monocytes before and after the 6-week intervention
Časové okno: 0-6 weeks
The TLR-4 expression on non-classical monocytes will be measured using flow cytometry at baseline and after the 6-week intervention.
0-6 weeks
Change in white blood cell count before and after the 6-week intervention
Časové okno: 0-6 weeks
The white blood cell count will be measured using a hematology analyzer at baseline and after the 6-week intervention.
0-6 weeks
Change in monocyte count before and after the 6-week intervention
Časové okno: 0-6 weeks
The monocyte count will be measured using a hematology analyzer at baseline and after the 6-week intervention.
0-6 weeks
Change in neutrophil count before and after the 6-week intervention
Časové okno: 0-6 weeks
The neutrophil count will be measured using a hematology analyzer at baseline and after the 6-week intervention.
0-6 weeks
Change in eosinophil count before and after the 6-week intervention
Časové okno: 0-6 weeks
The eosinophil count will be measured using a hematology analyzer at baseline and after the 6-week intervention.
0-6 weeks
Change in plasma IL-6 before and after the 6-week intervention
Časové okno: 0-6 weeks
The plasma IL-6 concentration will be measured using a multiplex assay at baseline and after the 6-week intervention.
0-6 weeks
Change in plasma IL-10 before and after the 6-week intervention
Časové okno: 0-6 weeks
The plasma IL-10 concentration will be measured using a multiplex assay at baseline and after the 6-week intervention.
0-6 weeks
Change in plasma TNF-α before and after the 6-week intervention
Časové okno: 0-6 weeks
The plasma TNF-α concentration will be measured using a multiplex assay at baseline and after the 6-week intervention.
0-6 weeks
Change in 4-h LPS-induced TNF-α before and after the 6-week intervention
Časové okno: 0-6 weeks
The LPS-induced TNF-α concentration will be measured from whole-blood culture supernatant using an ELISA at baseline and after the 6-week intervention.
0-6 weeks
Change in 4-h LPS+IL-10-induced TNF-α before and after the 6-week intervention
Časové okno: 0-6 weeks
The LPS+IL10-induced TNF-α concentration will be measured from whole-blood culture supernatant using an ELISA at baseline and after the 6-week intervention.
0-6 weeks
Change in 24-h CD3/CD28 stimulated INF-γ before and after the 6-week intervention
Časové okno: 0-6 weeks
The CD3/CD28 stimulated INF-γ concentration will be measured from T-cell culture supernatant using an ELISA at baseline and after the 6-week intervention.
0-6 weeks
Change in PMA/Ionomysin induced INF-γ before and after the 6-week
Časové okno: 0-6 weeks
The PMA/Ionomysin induced INF-γ concentration will be measured from whole-blood culture supernatant using an ELISA at baseline and after the 6-week intervention.
0-6 weeks

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Sponzor

Termíny studijních záznamů

Tato data sledují průběh záznamů studie a předkládání souhrnných výsledků na ClinicalTrials.gov. Záznamy ze studií a hlášené výsledky jsou před zveřejněním na veřejné webové stránce přezkoumány Národní lékařskou knihovnou (NLM), aby se ujistily, že splňují specifické standardy kontroly kvality.

Hlavní termíny studia

Začátek studia (Aktuální)

11. února 2026

Primární dokončení (Odhadovaný)

31. prosince 2027

Dokončení studie (Odhadovaný)

31. prosince 2027

Termíny zápisu do studia

První předloženo

23. června 2026

První předloženo, které splnilo kritéria kontroly kvality

23. června 2026

První zveřejněno (Aktuální)

30. června 2026

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Aktuální)

30. června 2026

Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality

23. června 2026

Naposledy ověřeno

1. června 2026

Více informací

Termíny související s touto studií

Další identifikační čísla studie

  • H25-02870-chronic

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