AI Article Synopsis
- Low-intensity training with blood flow restriction (BFR) could enhance endurance adaptations, but its effects on myocardial markers need more examination compared to regular training methods.
- The study involved 12 active males who completed three different exercise protocols, including low-intensity cycling with and without BFR, and high-intensity cycling, while measuring various physiological markers.
- Results showed that low-intensity cycling with BFR and high-intensity cycling significantly elevated cardiac troponin T levels, indicating potential heart strain, compared to low-intensity cycling without BFR.
Article Abstract
Background: Low-intensity training with blood flow restriction (BFR) training could induce endurance adaptations, its impact on myocardial markers is still unclear compared to training without BFR. Consequently, the influence of low-intensity interval exercise with and without BFR and high-intensity interval exercise (HIIE) on cardiac troponin was determined in this study.
Methods: Twelve physically active males between 18 and 26 years volunteered as participants. The participants completed 3 exercise tests in random order, which included 40% VO2max low-intensity cycling without BFR (group L), 40% VO2max low-intensity cycling with BFR set at 60% limb occlusion pressure (LOP) (group B), and 80% VO2max high-intensity cycling without BFR (group H). Participant muscle oxygen, blood flow, oxygen uptake, heart rate (HR), perceived exertion (RPE) rating, and pain levels were determined before and after exercise, after cuff inflation, and pre- and post-each exercise. Moreover, before each protocol, immediately after the exercises, and 3-4 hours after each exercise, elbow vein blood samples were collected to evaluate lactate (LA) and high-sensitivity cardiac troponin T (cTnT).
Results: Increased LA was recorded after exercise by the individuals in group H, which was more significant than in group B. Moreover, group B documented a more significant LA increment than group L (P < .05). The peak cTnT of groups B and H after exercise was significantly higher (P < .05). Furthermore, the increase was more significant than the values recorded by group L (P < .05).
Conclusion: The present study demonstrated that low-intensity interval exercise combined with BFR could cause cTnT elevations compared to training without BFR. The increase was similar to HIIE protocols.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11537447 | PMC |
| http://dx.doi.org/10.14744/AnatolJCardiol.2024.4458 | DOI Listing |
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