Invasive Assessment of Hemodynamic, Metabolic and Ionic Consequences During Blood Flow Restriction Training
Purpose: Medically recommended training often faces the dilemma that necessary mechanical intensities for muscle adaptations exceed patients' physical capacity. In this regard, blood flow restriction (BFR) training is becoming increasingly popular because it enables gains in muscle mass and str...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2020-12-01
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| Series: | Frontiers in Physiology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphys.2020.617668/full |
| _version_ | 1819059005419421696 |
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| author | Alexander Franz Alexander Franz Felix Berndt Joachim Raabe Jan-Frieder Harmsen Christoph Zilkens Christoph Zilkens Michael Behringer |
| author_facet | Alexander Franz Alexander Franz Felix Berndt Joachim Raabe Jan-Frieder Harmsen Christoph Zilkens Christoph Zilkens Michael Behringer |
| author_sort | Alexander Franz |
| collection | DOAJ |
| description | Purpose: Medically recommended training often faces the dilemma that necessary mechanical intensities for muscle adaptations exceed patients' physical capacity. In this regard, blood flow restriction (BFR) training is becoming increasingly popular because it enables gains in muscle mass and strength despite using low-mechanical loads combined with external venous occlusion. Since the underlying mechanisms are still unknown, we applied invasive measurements during exercise with and without BFR to promote physiological understanding and safety of this popular training technique.Methods: In a randomized cross-over design, ten healthy men (28.1 ± 6.5 years) underwent two trials of unilateral biceps curls either with (BFR) and without BFR (CON). For analysis of changes in intravascular pressures, blood gases, oximetry and electrolytes, an arterial and a venous catheter were placed at the exercising arm before exercise. Arterial and venous blood gases and intravascular pressures were analyzed before, during and 5 min after exercise.Results: Intravascular pressures in the arterial and venous system were more increased during exercise with BFR compared to CON (p < 0.001). Furthermore, arterial and venous blood gas analyses revealed a BFR-induced metabolic acidosis (p < 0.05) with increased lactate production (p < 0.05) and associated elevations in [K+], [Ca2+] and [Na+] (p < 0.001).Conclusion: The present study describes for the first time the local physiological changes during BFR training. While BFR causes greater hypertension in the arterial and venous system of the exercising extremity, observed electrolyte shifts corroborate a local metabolic acidosis with concurrent rises in [K+] and [Na+]. Although BFR could be a promising new training concept for medical application, its execution is associated with comprehensive physiological challenges. |
| first_indexed | 2024-12-21T14:04:13Z |
| format | Article |
| id | doaj.art-88d6756471624b2e8d799c9220569b4c |
| institution | Directory Open Access Journal |
| issn | 1664-042X |
| language | English |
| last_indexed | 2024-12-21T14:04:13Z |
| publishDate | 2020-12-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physiology |
| spelling | doaj.art-88d6756471624b2e8d799c9220569b4c2022-12-21T19:01:17ZengFrontiers Media S.A.Frontiers in Physiology1664-042X2020-12-011110.3389/fphys.2020.617668617668Invasive Assessment of Hemodynamic, Metabolic and Ionic Consequences During Blood Flow Restriction TrainingAlexander Franz0Alexander Franz1Felix Berndt2Joachim Raabe3Jan-Frieder Harmsen4Christoph Zilkens5Christoph Zilkens6Michael Behringer7Department of Orthopedics, University Hospital Duesseldorf, Düsseldorf, GermanyDepartment of Adult Reconstruction, ATOS Orthoparc Clinic Cologne, Cologne, GermanyDepartment of Orthopedics, University Hospital Duesseldorf, Düsseldorf, GermanyDepartment of Anesthesiology, University Hospital Duesseldorf, Düsseldorf, GermanyDepartment of Nutrition and Movement Sciences, School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, NetherlandsDepartment of Orthopedics, University Hospital Duesseldorf, Düsseldorf, GermanyDepartment of Adult Reconstruction, ATOS Orthoparc Clinic Cologne, Cologne, GermanyDepartment of Sports Medicine and Exercise Physiology, Goethe University Frankfurt, Frankfurt, GermanyPurpose: Medically recommended training often faces the dilemma that necessary mechanical intensities for muscle adaptations exceed patients' physical capacity. In this regard, blood flow restriction (BFR) training is becoming increasingly popular because it enables gains in muscle mass and strength despite using low-mechanical loads combined with external venous occlusion. Since the underlying mechanisms are still unknown, we applied invasive measurements during exercise with and without BFR to promote physiological understanding and safety of this popular training technique.Methods: In a randomized cross-over design, ten healthy men (28.1 ± 6.5 years) underwent two trials of unilateral biceps curls either with (BFR) and without BFR (CON). For analysis of changes in intravascular pressures, blood gases, oximetry and electrolytes, an arterial and a venous catheter were placed at the exercising arm before exercise. Arterial and venous blood gases and intravascular pressures were analyzed before, during and 5 min after exercise.Results: Intravascular pressures in the arterial and venous system were more increased during exercise with BFR compared to CON (p < 0.001). Furthermore, arterial and venous blood gas analyses revealed a BFR-induced metabolic acidosis (p < 0.05) with increased lactate production (p < 0.05) and associated elevations in [K+], [Ca2+] and [Na+] (p < 0.001).Conclusion: The present study describes for the first time the local physiological changes during BFR training. While BFR causes greater hypertension in the arterial and venous system of the exercising extremity, observed electrolyte shifts corroborate a local metabolic acidosis with concurrent rises in [K+] and [Na+]. Although BFR could be a promising new training concept for medical application, its execution is associated with comprehensive physiological challenges.https://www.frontiersin.org/articles/10.3389/fphys.2020.617668/fullvenous occlusionkaatsu trainingrehabilitationhyperkalemiaacidosisresistance training |
| spellingShingle | Alexander Franz Alexander Franz Felix Berndt Joachim Raabe Jan-Frieder Harmsen Christoph Zilkens Christoph Zilkens Michael Behringer Invasive Assessment of Hemodynamic, Metabolic and Ionic Consequences During Blood Flow Restriction Training Frontiers in Physiology venous occlusion kaatsu training rehabilitation hyperkalemia acidosis resistance training |
| title | Invasive Assessment of Hemodynamic, Metabolic and Ionic Consequences During Blood Flow Restriction Training |
| title_full | Invasive Assessment of Hemodynamic, Metabolic and Ionic Consequences During Blood Flow Restriction Training |
| title_fullStr | Invasive Assessment of Hemodynamic, Metabolic and Ionic Consequences During Blood Flow Restriction Training |
| title_full_unstemmed | Invasive Assessment of Hemodynamic, Metabolic and Ionic Consequences During Blood Flow Restriction Training |
| title_short | Invasive Assessment of Hemodynamic, Metabolic and Ionic Consequences During Blood Flow Restriction Training |
| title_sort | invasive assessment of hemodynamic metabolic and ionic consequences during blood flow restriction training |
| topic | venous occlusion kaatsu training rehabilitation hyperkalemia acidosis resistance training |
| url | https://www.frontiersin.org/articles/10.3389/fphys.2020.617668/full |
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