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Remote Ischaemic Preconditioning Combined With Exercise Training on Vascular Function.

L

Liverpool John Moores University

Status

Completed

Conditions

Cardiovascular Disease Risk

Treatments

Other: rIPC only
Other: rIPC + Exercise

Study type

Interventional

Funder types

Other

Identifiers

NCT03624452
Exericse&rIPC

Details and patient eligibility

About

Remote Ischaemic preconditioning' (RIPC) is defined as short controlled sequences of repeated inflation of a blood pressure cuff on the upper arm (to reduce blood flow) for 5 mins followed by recovery (cuff deflation so blood flows normally again). An intervention consisting of 4 cycles of 5 min of arm cuff inflation followed by deflation performed 3 times per week, spread over 8 weeks has been shown to improve blood vessel function in young individuals without any medical conditions. This is a simple and easily applicable intervention that could help the blood vessels capacity to deliver blood to an organ (e.g. heart or the muscle).It is currently unknown if RIPC combined with exercise training, provides stronger benefits to our blood vessels than RIPC alone. Therefore, the aim of this study is to investigate if combining RIPC with an 8 week exercise training programme improves blood vessel health more than 8 weeks of RIPC alone.

Full description

A bout of ischaemia using a blood pressure cuff on the upper arm inflated to a pressure of 220 mm Hg for 5 mins followed by reperfusion (deflation of the cuff) is commonly known as remote ischaemic preconditioning (RIPC). Traditionally, RIPC refers to 5 minutes of inflation-5 minutes deflation repeated 4 times. Recent research has investigated the impact of repeated RIPC interventions on cardiovascular health. One previous repeated RIPC intervention, whereby RIPC was performed 3 times per week for eight weeks, identified that RIPC significantly enhanced conduit artery endothelial function and microvascular function.

Exercise training is crucial for a healthy lifestyle, with the World Health Organization recommending that adults aged 18-64 should do at least 150 minutes of moderate aerobic physical activity per week, or at least 75 minutes of vigorous intensity activity. Interestingly, the impact of exercise training on the vasculature is similar to that of repeated RIPC interventions, with reductions in arterial blood pressure, increased in blood flow and improvements in systemic vascular endothelial function. No study has examined if combining exercise and RIPC provides enhanced effects on the vasculature compared to exercise alone.

The aim of this study is to investigate whether combining 8 weeks of exercise and RIPC is more beneficial to systemic vascular function that exercise alone.

Enrollment

20 patients

Sex

All

Ages

18 to 65 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • Able to provide written consent.
  • Males and females 18 to 65 years.
  • Body Mass Index >30g/m2 or waist circumference of ≥94cm (male), ≥80cm (female).
  • Raised blood pressure systolic >130 or diastolic >85 mmHg or normal
  • Diagnosed with high cholesterol by GP or normal

Exclusion criteria

  • Type 1 or 2 diabetes mellitus
  • Previous myocardial infarction, stroke (including TIA) or thrombosis
  • Diagnosed with Congestive Heart failure
  • Unable to enroll for the duration of the study
  • Pregnancy or lactation period
  • Smoking
  • Any arm injury that will prevent application of the RIPC-intervention

Trial design

Primary purpose

Other

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Single Blind

20 participants in 2 patient groups

rIPC and exercise training
Experimental group
Description:
Those in the rIPC + exercise group will attend three 50 minute exercise sessions per week for 8 weeks at Liverpool John Moores University and 3 bouts of IPC per week at home at a time of their choice
Treatment:
Other: rIPC + Exercise
rIPC only
Experimental group
Description:
Those randomly allocated into the rIPC group will self administer 3 bouts of IPC per week at home at a time of their choice.
Treatment:
Other: rIPC only

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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