Abstract
Purpose
Blood-flow restricted resistance exercise training (BFRE) is suggested to be effective in rehabilitation training, but more knowledge is required about its potential muscle damaging effects. Therefore, we investigated muscle-damaging effects of BFRE performed to failure and possible protective effects of previous bouts of BFRE or maximal eccentric exercise (ECC).
Methods
Seventeen healthy young men were allocated into two groups completing two exercise bouts separated by 14 days. One group performed BFRE in both exercise bouts (BB). The other group performed ECC in the first and BFRE in the second bout. BFRE was performed to failure. Indicators of muscle damage were evaluated before and after exercise.
Results
The first bout in the BB group led to decrements in maximum isometric torque, and increases in muscle soreness, muscle water retention, and serum muscle protein concentrations after exercise. These changes were comparable in magnitude and time course to what was observed after first bout ECC. An attenuated response was observed in the repeated exercise bout in both groups.
Conclusion
We conclude that unaccustomed single-bout BFRE performed to failure induces significant muscle damage. Additionally, both ECC and BFRE can precondition against muscle damage induced by a subsequent bout of BFRE.



Abbreviations
- ANOVA:
-
Analysis of variance
- AUC:
-
Area under curve
- BFRE:
-
Blood flow restriction exercise
- CK:
-
Creatine kinase
- CSA:
-
Cross-sectional area
- DOMS:
-
Delayed onset muscle soreness
- ECC:
-
Eccentric exercise
- EIMD:
-
Exercise-induced muscle damage
- Mb:
-
Myoglobin
- MRI:
-
Magnetic resonance imaging
- MVC:
-
Maximum voluntary contraction
- ROI:
-
Region of interest
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Acknowledgments
The study was funded by Helga and Peter Kornings Foundation and by the Danish Council for Independent Research (FSS). We acknowledge the expert technical assistance provided by Janni Mosgaard Jensen and Gitte Kaiser Hartvigsen.
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Communicated by William J. Kraemer.
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Sieljacks, P., Matzon, A., Wernbom, M. et al. Muscle damage and repeated bout effect following blood flow restricted exercise. Eur J Appl Physiol 116, 513–525 (2016). https://doi.org/10.1007/s00421-015-3304-8
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DOI: https://doi.org/10.1007/s00421-015-3304-8