Acute High Intensity Interval Training and Blood Flow Restriction

Summary

The study aims to look at the blood flow restriction (BFR) + high intensity interval training (HIIT) variables to induce an optimal acute training stimulus (i.e., acute responses in main outcome measures of muscular activation, muscular deoxygenation, and secondary outcome measures of heart rate (HR), blood lactate (bLa), subjective ratings of perceived exertion and discomfort)

The hypotheses for this study are: (i) BFR increases muscular deoxygenation, muscular activation when HIIT exercise is of the same intensity, (ii) however, comparing between a lower BFR + HIIT exercise intensity (e.g. 80% V̇O2max) and higher HIIT exercise intensity (e.g. 100% V̇O2max), muscular deoxygenation and activation will be similar but HR will be lower in the BFR + HIIT condition.

Conditions

• Activity, Motor

Interventions

OTHER

Active Comparator: HIIT Control

Complete 3 sets of five repetitions of 30 seconds cycling at 100% of maximal aerobic power with 30 seconds of active unloaded recovery between repetitions; 3 minutes of passive rest between sets.

OTHER

Experimental: HIIT + BFR between cycling sets

Complete 3 sets of five repetitions of 30 seconds cycling at 100% of maximal aerobic power with 30 seconds of active unloaded recovery between repetitions; 3 minutes of passive rest between sets. Blood flow restriction is applied for 2 minutes during the passive rest at 80% of limb occlusion pressure.

OTHER

Experimental: HIIT + BFR moderate occlusion during cycling

Complete 3 sets of five repetitions of 30 seconds cycling at 70% of maximal aerobic power with 30 seconds of active unloaded recovery between repetitions; 3 minutes of passive rest between sets. Blood flow restriction is applied during and between exercise repetitions at 50% of limb occlusion pressure and deflated during passive rest periods.

OTHER

Experimental: HIIT + BFR high occlusion during cycling

Complete 3 sets of five repetitions of 30 seconds cycling at 70% of maximal aerobic power with 30 seconds of active unloaded recovery between repetitions; 3 minutes of passive rest between sets. Blood flow restriction is applied during and between exercise repetitions at 80% of limb occlusion pressure and deflated during passive rest periods.

Sponsors & Collaborators

• Nanyang Technological University

  lead OTHER

Principal Investigators

• Stephen Burns, PhD · Nanyang Technological University

Study Design

Allocation

RANDOMIZED

Purpose

OTHER

Masking

NONE

Model

CROSSOVER

Eligibility

Min Age

18 Years

Max Age

40 Years

Sex

MALE

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2022-08-01

Primary Completion

2022-12-31

Completion

2022-12-31

Countries

• Singapore

Study Locations