Acute Effects of Different Blood Flow Restriction Protocols on Bar Velocity During the Squat Exercise
The main goal of the present study was to evaluate the effects of different blood flow restriction (BFR) protocols (continuous and intermittent) on peak bar velocity (PV) and mean bar velocity (MV) during the squat exercise at progressive loads, from 40 to 90% 1RM. Eleven healthy men (age = 23.4 ± 3...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-06-01
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| Series: | Frontiers in Physiology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphys.2021.652896/full |
| _version_ | 1819102616115740672 |
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| author | Michal Wilk Robert Trybulski Robert Trybulski Michal Krzysztofik Grzegorz Wojdala Yuri Campos Yuri Campos Adam Zajac Ewelina Lulińska Petr Stastny |
| author_facet | Michal Wilk Robert Trybulski Robert Trybulski Michal Krzysztofik Grzegorz Wojdala Yuri Campos Yuri Campos Adam Zajac Ewelina Lulińska Petr Stastny |
| author_sort | Michal Wilk |
| collection | DOAJ |
| description | The main goal of the present study was to evaluate the effects of different blood flow restriction (BFR) protocols (continuous and intermittent) on peak bar velocity (PV) and mean bar velocity (MV) during the squat exercise at progressive loads, from 40 to 90% 1RM. Eleven healthy men (age = 23.4 ± 3.1 years; body mass = 88.5 ± 12.1 kg; squat 1RM = 183.2 ± 30.7 kg; resistance training experience, 5.7 ± 3.6 years) performed experimental sessions once a week for 3 weeks in random and counterbalanced order: without BFR (NO-BFR), with intermittent BFR (I-BFR), and with continuous BFR (C-BFR). During the experimental session, the participants performed six sets of the barbell squat exercise with loads from 40 to 90% 1RM. In each set, they performed two repetitions. During the C-BFR session, the cuffs were maintained throughout the training session. During the I-BFR, the cuffs were used only during the exercise and released for each rest interval. The BFR pressure was set to ∼80% arterial occlusion pressure (AOP). Analyses of variance showed a statistically significant interaction for MV (p < 0.02; η2 = 0.18). However, the post hoc analysis did not show significant differences between particular conditions for particular loads. There was no significant condition × load interaction for PV (p = 0.16; η2 = 0.13). Furthermore, there were no main effects for conditions in MV (p = 0.38; η2 = 0.09) as well as in PV (p = 0.94; η2 = 0.01). The results indicate that the different BFR protocols used during lower body resistance exercises did not reduce peak bar velocity and mean bar velocity during the squat exercise performed with various loads. |
| first_indexed | 2024-12-22T01:37:23Z |
| format | Article |
| id | doaj.art-bd2088880e4b41b0aaa64221a307991e |
| institution | Directory Open Access Journal |
| issn | 1664-042X |
| language | English |
| last_indexed | 2024-12-22T01:37:23Z |
| publishDate | 2021-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physiology |
| spelling | doaj.art-bd2088880e4b41b0aaa64221a307991e2022-12-21T18:43:20ZengFrontiers Media S.A.Frontiers in Physiology1664-042X2021-06-011210.3389/fphys.2021.652896652896Acute Effects of Different Blood Flow Restriction Protocols on Bar Velocity During the Squat ExerciseMichal Wilk0Robert Trybulski1Robert Trybulski2Michal Krzysztofik3Grzegorz Wojdala4Yuri Campos5Yuri Campos6Adam Zajac7Ewelina Lulińska8Petr Stastny9Institute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education, Katowice, PolandDepartment of Medical Sciences, The Wojciech Korfanty School of Economics, Katowice, PolandProvita Zory Medical Center, Zory, PolandInstitute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education, Katowice, PolandInstitute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education, Katowice, PolandPostgraduate Program, Faculty of Physical Education and Sports, Federal University of Juiz de Fora, Juiz de Fora, BrazilStudy Group and Research in Neuromuscular Responses, Federal University of Lavras, Lavras, BrazilInstitute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education, Katowice, PolandFaculty of Physical Education, Gdansk University of Physical Education and Sport, Gdańsk, PolandDepartment of Sport Games, Faculty of Physical Education and Sport, Charles University, Prague, CzechiaThe main goal of the present study was to evaluate the effects of different blood flow restriction (BFR) protocols (continuous and intermittent) on peak bar velocity (PV) and mean bar velocity (MV) during the squat exercise at progressive loads, from 40 to 90% 1RM. Eleven healthy men (age = 23.4 ± 3.1 years; body mass = 88.5 ± 12.1 kg; squat 1RM = 183.2 ± 30.7 kg; resistance training experience, 5.7 ± 3.6 years) performed experimental sessions once a week for 3 weeks in random and counterbalanced order: without BFR (NO-BFR), with intermittent BFR (I-BFR), and with continuous BFR (C-BFR). During the experimental session, the participants performed six sets of the barbell squat exercise with loads from 40 to 90% 1RM. In each set, they performed two repetitions. During the C-BFR session, the cuffs were maintained throughout the training session. During the I-BFR, the cuffs were used only during the exercise and released for each rest interval. The BFR pressure was set to ∼80% arterial occlusion pressure (AOP). Analyses of variance showed a statistically significant interaction for MV (p < 0.02; η2 = 0.18). However, the post hoc analysis did not show significant differences between particular conditions for particular loads. There was no significant condition × load interaction for PV (p = 0.16; η2 = 0.13). Furthermore, there were no main effects for conditions in MV (p = 0.38; η2 = 0.09) as well as in PV (p = 0.94; η2 = 0.01). The results indicate that the different BFR protocols used during lower body resistance exercises did not reduce peak bar velocity and mean bar velocity during the squat exercise performed with various loads.https://www.frontiersin.org/articles/10.3389/fphys.2021.652896/fullocclusionresistance exercisecuffpeak velocityperformance |
| spellingShingle | Michal Wilk Robert Trybulski Robert Trybulski Michal Krzysztofik Grzegorz Wojdala Yuri Campos Yuri Campos Adam Zajac Ewelina Lulińska Petr Stastny Acute Effects of Different Blood Flow Restriction Protocols on Bar Velocity During the Squat Exercise Frontiers in Physiology occlusion resistance exercise cuff peak velocity performance |
| title | Acute Effects of Different Blood Flow Restriction Protocols on Bar Velocity During the Squat Exercise |
| title_full | Acute Effects of Different Blood Flow Restriction Protocols on Bar Velocity During the Squat Exercise |
| title_fullStr | Acute Effects of Different Blood Flow Restriction Protocols on Bar Velocity During the Squat Exercise |
| title_full_unstemmed | Acute Effects of Different Blood Flow Restriction Protocols on Bar Velocity During the Squat Exercise |
| title_short | Acute Effects of Different Blood Flow Restriction Protocols on Bar Velocity During the Squat Exercise |
| title_sort | acute effects of different blood flow restriction protocols on bar velocity during the squat exercise |
| topic | occlusion resistance exercise cuff peak velocity performance |
| url | https://www.frontiersin.org/articles/10.3389/fphys.2021.652896/full |
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