High-intensity resistance exercise with low repetitions maintains endothelial function
Takuma Morishima1, Yosuke Tsuchiya2, Motoyuki Iemitsu3
1Sport Research Center, Hosei University , Tokyo , Japan.
Summary
High-intensity resistance exercise with low repetitions preserves endothelial function, preventing exercise-induced vascular impairment. This specific training method avoids the negative effects seen with moderate or high-repetition resistance exercise.
Area of Science:
- Cardiovascular Physiology
- Exercise Science
- Vascular Biology
Background:
- Resistance exercise can impair endothelial function, potentially due to sustained blood pressure elevation.
- Understanding the specific exercise parameters that mitigate these vascular effects is crucial for safe and effective training.
Purpose of the Study:
- To test if high-intensity resistance exercise with low repetitions prevents endothelial dysfunction.
- To compare the effects of different resistance exercise protocols on blood pressure and endothelial function.
Main Methods:
- Thirteen healthy young subjects underwent three randomized trials: moderate-intensity/moderate-repetitions, low-intensity/high-repetitions, and high-intensity/low-repetitions.
- Brachial artery flow-mediated dilation (FMD) and blood pressure were measured pre- and post-exercise (10, 30, 60 min).
Main Results:
- High-intensity, low-repetitions exercise induced lower increases in blood flow and shear rate compared to other protocols.
- While all protocols elevated systolic blood pressure, the high-intensity, low-repetitions group showed a smaller increase.
- Endothelial function (FMD) was impaired after moderate-moderate and low-high protocols but maintained after the high-low protocol.
Conclusions:
- High-intensity resistance exercise performed with low repetitions effectively maintains endothelial function.
- This exercise strategy prevents the detrimental vascular effects associated with other resistance training methods.
- This study provides novel evidence for a resistance exercise protocol that supports vascular health.
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