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Comparing the acute responses between a manual and automated blood flow restriction system
Daphney M Carter1, Matthew A Chatlaong2, William M Miller3
1Wellstar College of Health and Human Services, Department of Exercise Science and Sport Management, Kennesaw State University, Kennesaw, GA, United States.
Frontiers in Physiology
|July 1, 2024
Summary
Manual and automated blood flow restriction (BFR) systems show similar physiological responses. However, manual BFR resulted in less discomfort and more repetitions during exercise.
Area of Science:
- Exercise Physiology
- Biomedical Engineering
Background:
- Blood flow restriction (BFR) training is a method used to increase muscle mass and strength.
- Manual and automated BFR systems differ in their application and control.
Purpose of the Study:
- To compare the acute physiological responses and user experience between manual and automated BFR systems.
- To determine if differences exist in muscle thickness, maximal force, and perceived exertion.
Main Methods:
- 33 participants underwent testing with both manual and automated BFR systems.
- Measurements included arterial occlusion pressure (AOP), cardiovascular responses, muscle thickness (MT), and maximal force.
- Participants performed unilateral bicep curls at 30% of one-repetition maximum and 50% AOP.
Main Results:
- Cardiovascular responses and perceived discomfort were similar between systems.
- Manual BFR systems resulted in higher AOP in a supine position but similar AOP when standing.
- Muscle thickness increased similarly post-exercise, while force decreased and then recovered. Manual BFR yielded more repetitions per set and lower perceived exertion.
Conclusions:
- Manual and automated BFR systems elicit comparable acute physiological adaptations.
- Manual BFR systems may offer advantages in terms of reduced exercise discomfort and increased training volume.
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