Acute Cardiovascular Response to Low-Load Unilateral, Bilateral, and Alternating Resistance Exercise with Blood Flow Restriction in the Lower Body

<p>Resistance exercise with blood flow restriction (BFR) has been suggested to exaggerate the exercise pressor response over traditional non-BFR exercise. While applying BFR relative to an individual’s arterial occlusion pressure (AOP) and exercising at low-loads seems to produce a comparable cardiovascular response to traditional moderate or high-load training, it is beneficial to identify modifications for reducing the cardiovascular response to BFR exercise. PURPOSE: To determine if unilateral (UNI), bilateral (BI), or alternating (ALT) exercise modalities elicit different cardiovascular responses during BFR exercise. METHODS: 18 participants (13 male and 5 female) performed four sets of UNI, BI, and ALT knee-extensions at 30% one-repetition maximum and 40% AOP. Pulse wave analysis was measured before and after exercise. Data were analyzed using Bayesian RMANOVA and presented as mean (SD). RESULTS: Changes in aortic systolic blood pressure, aortic diastolic blood pressure, and aortic mean arterial pressure were greater following ALT. Changes in aortic rate pressure product [ALT = 4873 (2479) mmHg * bpm, UNI = 3243 (1482) mmHg * bpm, BI = 3308 (1449) mmHg * bpm] were also higher following ALT. The volume of work performed was greater in ALT [ALT = 1946 (1787) kg, UNI = 945 (313) kg, BI = 918 (319) kg]. CONCLUSION: Given the greater cardiovascular response following alternating BFR exercise in healthy individuals, those at an increased risk of a cardiovascular event should instead choose unilateral or bilateral BFR exercise until further work is done to determine the degree to which this modality can be tolerated.</p>

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Masters Thesis

Year dc:date.available

2019

Author dc:creator

• Stanford, Daphney

Contributors dc:contributor

• Matthew Jessee
• Daniel Credeur
• Stephanie McCoy

• cardiovascular response
• blood flow restriction
• aortic
• augmentation
• wave reflection
• blood pressure
• Life Sciences
• Medicine and Health Sciences

Repository record dc:identifier

https://aquila.usm.edu/masters_theses/669

OAI identifier oai:identifier

oai:aquila.usm.edu:masters_theses-1731