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Acute Blood Flow Restriction Walking on Immune Cell Phenotype and Function

3. november 2026 oppdatert av: 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.

Studieoversikt

Status

Rekruttering

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

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.

Studietype

Intervensjonell

Registrering (Antatt)

20

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

Studiesteder

    • British Columbia
      • Kelowna, British Columbia, Canada, V1V 1V7
        • Rekruttering
        • University of British Columbia Okanagan
        • Ta kontakt med:

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

19 år til 64 år (Voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

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

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Grunnvitenskap
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: 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%.

Aktiv komparator: Treadmill Walking

Treadmill walking.

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

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Change in white blood cell count before, during, and after exercise.
Tidsramme: 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

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Change in monocyte count before, during, and after exercise
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

11. februar 2026

Primær fullføring (Antatt)

31. desember 2027

Studiet fullført (Antatt)

31. desember 2027

Datoer for studieregistrering

Først innsendt

23. juni 2026

Først innsendt som oppfylte QC-kriteriene

3. november 2026

Først lagt ut (Faktiske)

10. november 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

10. november 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

3. november 2026

Sist bekreftet

1. november 2026

Mer informasjon

Begreper knyttet til denne studien

Andre studie-ID-numre

  • H25-02870 acute

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

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Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

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