Autoregulated and Non-Autoregulated Blood Flow Restriction on Acute Arterial Stiffness

Author:

Rolnick Nicholas12,Licameli Nicholas3,Moghaddam Masoud4,Marquette Lisa5,Walter Jessica5,Fedorko Brent5,Werner Tim5

Affiliation:

1. Exercise Science, Lehman College, Bronx, United States

2. Physical Therapy, The Human Performance Mechanic, Manhattan, United States

3. Physical Therapy, Strength Together, Inc., Nutley, United States

4. Physical Therapy, University of Maryland Eastern Shore, Princess Anne, United States

5. Exercise Science, Salisbury University, Salisbury, United States

Abstract

AbstractThis study aimed to investigate the acute effects of autoregulated and non-autoregulated applied pressures during blood flow restriction resistance exercise to volitional fatigue on indices of arterial stiffness using the Delfi Personalized Tourniquet System. Following a randomized autoregulated or non-autoregulated blood flow restriction familiarization session, 20 physically active adults (23±5 years; 7 females) participated in three randomized treatment-order sessions with autoregulated and non-autoregulated and no blood flow restriction training. Participants performed four sets of dumbbell wall squats to failure using 20% of one repetition maximum. Blood flow restriction was performed with 60% of supine limb occlusion pressure. Testing before and post-session included an ultrasonic scan of the carotid artery, applanation tonometry, and blood pressure acquisition.Carotid-femoral pulse wave velocity increased in the non-autoregulated and no blood flow restriction training groups following exercise while carotid-radial pulse wave velocity increased in the no blood flow restriction training group (all p<0.05). Carotid-femoral pulse wave velocity exhibited an interaction effect between autoregulated and non-autoregulated blood flow restriction in favor of autoregulated blood flow restriction (p<0.05). Autoregulated blood flow restriction training does not influence indices of arterial stiffness while non-autoregulated and no blood flow restriction training increases central stiffness.

Publisher

Georg Thieme Verlag KG

Subject

Orthopedics and Sports Medicine,Physical Therapy, Sports Therapy and Rehabilitation

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