Date Presented

Spring 5-2020

Document Type

Thesis

Degree Name

Bachelor of Science

Department

Exercise Physiology

First Advisor

Sean Collins, PhD

Second Advisor

Thomas Bowman, PhD, ATC

Third Advisor

Jennifer Styrsky, PhD

Abstract

Purpose: The purpose of this study was to determine the immediate physiological response that is elicited when performing low-intensity resistance exercise in conjunction with blood flow restriction (BFR) compared to the physiological response that occurs as a result of heavy load non-BFR resistance exercise. Methods: Subjects (n=5) completed seated, incline leg press over three experimental trials. Two were BFR trials {B-60 [restriction set to 60% arterial occlusion pressure (AOP) and B-10 [10% AOP]} with a resistance load equal to 20% of one-repetition maximum resistance (1RM) (sets x reps, 1 x 30 plus 3 x 15), and one non-BFR trial at 65% 1RM (HL) (3 x 10). Measurements recorded were heart rate (HR), rate of perceived exertion (RPE), pain perception, and blood lactate. Results: A 3 x 3 ANOVA revealed a significant interaction (F4,16= 6.991, p = 0.002) between exercise condition and set for HR delta scores but no significant simple main effects. Blood lactate had no significant interaction (F6,24 = 0.49, p = 0.81) or main effects for condition (F3,1 = 2.05, p = 0.19) nor time (F2,8 = 1.93, p = 0.18). No other significant differences were observed for RPE or pain. Conclusion: Low-intensity resistance exercise with BFR did not produce consistent differences in indicators of intensity of work or subjective perceptions of the work compared to high-load resistance exercise without BFR, indicating that the acute physiological responses were comparable between the exercise conditions.

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