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Pulse wave reflection responses to bench press with and without practical blood flow restriction
Yu Lun Tai1,1, Erica M Marshall1,1, Alaina Glasgow1,1
1Cardiovascular Dynamics Laboratory, Exercise Physiology, 161F MACC Annex, Kent State University, Kent, OH 44242, USA.
Summary
Both low-load resistance exercise with practical blood flow restriction (pBFR) and high-load bench press significantly alter pulse wave reflection. These resistance training methods showed similar effects on cardiovascular responses in trained men.
Area of Science:
- Cardiovascular Physiology
- Exercise Science
- Biomedical Engineering
Background:
- Resistance exercise enhances muscular strength but may impact pulse wave reflection.
- The cardiovascular effects of combining resistance exercise with practical blood flow restriction (pBFR) are not well understood.
Purpose of the Study:
- To compare pulse wave reflection characteristics between low-load bench press with pBFR (LL-pBFR) and traditional high-load bench press (HL) in resistance-trained men.
Main Methods:
- Sixteen resistance-trained men underwent LL-pBFR, HL, and control (CON) conditions.
- Pulse wave reflection was assessed before and after each condition.
- Repeated-measures ANOVA analyzed changes in cardiovascular parameters.
Main Results:
- Both LL-pBFR and HL significantly increased heart rate, augmentation index, augmentation pressure, and wasted left ventricular energy compared to rest and CON.
- Aortic pulse pressure increased significantly after LL-pBFR.
- Aortic diastolic blood pressure decreased after LL-pBFR but not HL.
Conclusions:
- Acute bench press resistance exercise, with or without pBFR, significantly alters pulse wave reflection characteristics.
- LL-pBFR and HL elicited comparable changes in most measured pulse wave reflection parameters.
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