Honors Theses

Date of Award

Spring 5-10-2023

Document Type

Undergraduate Thesis


Health, Exercise Science, and Recreation Management

First Advisor

Matthew B Jessee

Second Advisor

Jeremy P Loenneke

Third Advisor

Minsoo Kang

Relational Format



While it is recommended that blood flow restriction be applied relative to pre-exercise arterial occlusion pressure (AOP), no guidelines exist for an initial rest period prior to the measurement. Remeasuring AOP post-exercise can be used to estimate the cardiovascular response. When measuring post-exercise (pre-) AOP, different methods could be used. Some increase the cuff pressure from blood flow restriction exercise pressure (without deflation), or deflate the cuff prior to post-exercise (post-) AOP measurement. It is unknown if pre-AOP is affected by initial rest period, or if post- AOP is affected by cuff deflation. Thus, the purpose of this study was to: 1) compare pre- AOP across differing initial rest periods, and 2) compare post- changes in AOP measured either with or without cuff deflation following exercise.

20 participants completed three visits. Visit 1 consisted of paperwork, and measurements of height, weight, and 1 repetition maximum (1RM) bicep curl testing on the dominant arm, followed by familiarization. Upon entry into the lab on visits 2 and 3 (exercise testing days), AOP was measured immediately and 10min after initial measurement, with 10min serving as pre-AOP. Depending on condition, AOP was measured 5min after initial AOP on one of the two days. Three sets of elbow flexion exercise were performed at 30% 1RM to failure and 40% of pre- AOP with 30s rest between sets. 10s after the cessation of exercise, post-AOP was measured. Depending on condition, to assess post-exercise AOP, the pressure was increased from 40% AOP, or the cuff was deflated

and reinflated. A Bayesian one-way repeated measures ANOVA was used to compare differences in AOP across rest periods and a Bayesian t-test was used to compare differences in inflated versus deflated pre- to post- AOP changes. Results presented as mean (SD). RESULTS: The immediate [158.8 (21.6)], 5min [159.3 (20.3)], and 10min [ 159.4 (23.5)] AOP measures were similar (BF10 = .141). Differences between immediate-10min measures on days with a 5-min measure [0.65 (8.1)] and days without [1.65 (9.0)] were also similar (BF10 = .244). There was anecdotal evidence of a difference (BF10 = .815) in pre- to post- changes in AOP with the cuff remaining inflated [32.8 (25.6)] and deflated [21.6 (12.8)] shows. The number of total exercise repetitions completed was similar across days, days of cuff deflation 52.8(18.9) and those without 54.5(17.4) BF10 = .293). CONCLUSION: Our data shows similarity in these three initial rest periods. It is unclear if cuff deflation affects changes in pre- to post-AOP, therefore continued research is required.

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