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European Journal of Applied Physiology

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Open Access 01-09-2018 | Original Article

Effects of training with flow restriction on the exercise pressor reflex

Authors: Patrik Sundblad, Roger Kölegård, Eric Rullman, Thomas Gustafsson

Published in: European Journal of Applied Physiology | Issue 9/2018

Abstract

Purpose

We hypothesized that 5 weeks of endurance training with blood flow restriction (R-training), providing relative ischemia and stimulation of the muscle chemoreflex, would decrease the exercise pressor reflex (EPR) when compared to training with the same workload in a free-flow condition (NR-training).

Methods

10 subjects performed one-leg knee-extension training four times a week during a 5-week period. Both legs were trained with identical workload, with one leg being trained during flow-restriction induced by lower body positive pressure. The EPR was assessed by measuring the increase in heart rate (HR) and mean arterial pressure (MAP) during an isometric knee extension of 35% of max torque for 90 s, this was done before (C), and after training in each leg (R and NR, respectively).

Results

At the end of isometric contraction, the increase in mean AP (MAP) in the NR-trained leg and in the control condition were 41 ± 4 and 38 ± 4 mmHg, respectively, whereas the increase in the R-trained leg was 30 ± 4 mmHg (p < 0.05 R vs C and NR), corresponding to a decrease of about 25%. A similar patter was observed with respect to responses in HR, where the increase was 28 ± 3 and 28 ± 3 bpm in the NR and C, and 22 ± 4 in the R condition (p < 0.05 R vs C and NR).

Conclusions

Peripheral metabolic changes induced by relative ischemia are important in modifying the EPR in response to exercise training.

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Title: Effects of training with flow restriction on the exercise pressor reflex
Authors: Patrik Sundblad
Roger Kölegård
Eric Rullman
Thomas Gustafsson
Publication date: 01-09-2018
Publisher: Springer Berlin Heidelberg
Published in: European Journal of Applied Physiology / Issue 9/2018
Print ISSN: 1439-6319
Electronic ISSN: 1439-6327
DOI: https://doi.org/10.1007/s00421-018-3911-2

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Effects of training with flow restriction on the exercise pressor reflex

Abstract

Purpose

Methods

Results

Conclusions

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

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