Comparison of blood lactate and perceived exertion responses in two matched time-under-tension protocols.
<h4>Purpose</h4>The aim of this study was to compare the concentration of blood lactate [bLa-] and the subjective perception of exertion of trained men in a moderate repetition protocol (MRP) versus a high repetition protocol (HRP) equated for time under tension.<h4>Methods</h4&...
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Public Library of Science (PLoS)
2020-01-01
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| Series: | PLoS ONE |
| Online Access: | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0227640&type=printable |
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| author | Salvador Vargas-Molina Fernando Martín-Rivera Diego A Bonilla Jorge L Petro Leandro Carbone Ramón Romance Manuel deDiego Brad J Schoenfeld Javier Benítez-Porres |
| author_facet | Salvador Vargas-Molina Fernando Martín-Rivera Diego A Bonilla Jorge L Petro Leandro Carbone Ramón Romance Manuel deDiego Brad J Schoenfeld Javier Benítez-Porres |
| author_sort | Salvador Vargas-Molina |
| collection | DOAJ |
| description | <h4>Purpose</h4>The aim of this study was to compare the concentration of blood lactate [bLa-] and the subjective perception of exertion of trained men in a moderate repetition protocol (MRP) versus a high repetition protocol (HRP) equated for time under tension.<h4>Methods</h4>A sample of 40 healthy young men (aged, 23.2 ± 4.0 years; height, 177.3 ± 7.0 cm; BMI, 24.3 ± 2.2) performed two sessions of 8 sets of bicep curls with a one-week recovery interval between the trials. In the HRP protocol, 20 repetitions were performed with a cadence of 2 seconds of eccentric and 1 second of concentric, while in the MRP protocol 10 repetitions were performed with 4 seconds of eccentric and 2 seconds of concentric. Cadences were controlled by a metronome. At the beginning and end of each of the sessions, blood lactate was taken at 2, 15, and 30 minutes, and rating of perceived exertion (OMNI-RES) was assessed immediately after completion of each session.<h4>Results</h4>There were [bLa-] differences between protocols in the MRP 2 min, (5.2 ±1.4); 15 min, (3.2 ±1.2); 30 min, (1.9 ±0.6); p< 0.05, and the HRP 2 min, (6.1 ±1.6); 15 min, (3.7 ±1.1); 30 min, (2.2 ±0.6); p<0.01. OMNI-RES was higher in HRP, (8.8 ±0.7) than in MRP, (7.7 ±0.9). Additionally, a correlation was found between the RPE and [bLa-] values in the HRP protocol (rs = 0.35, p < 0.01).<h4>Conclusions</h4>Training protocols with high times under tension promote substantial increases in metabolic stress, however, our findings indicate that HRP generates more [bLa-] than MRP. In addition, there were higher RPE values in the HRP protocol compared to MRP in single-joint exercises. |
| format | Article |
| id | doaj-art-5509140be3c14c3bb15dac583a77fdf4 |
| institution | DOAJ |
| issn | 1932-6203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Public Library of Science (PLoS) |
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| series | PLoS ONE |
| spelling | doaj-art-5509140be3c14c3bb15dac583a77fdf42025-08-20T02:54:53ZengPublic Library of Science (PLoS)PLoS ONE1932-62032020-01-01151e022764010.1371/journal.pone.0227640Comparison of blood lactate and perceived exertion responses in two matched time-under-tension protocols.Salvador Vargas-MolinaFernando Martín-RiveraDiego A BonillaJorge L PetroLeandro CarboneRamón RomanceManuel deDiegoBrad J SchoenfeldJavier Benítez-Porres<h4>Purpose</h4>The aim of this study was to compare the concentration of blood lactate [bLa-] and the subjective perception of exertion of trained men in a moderate repetition protocol (MRP) versus a high repetition protocol (HRP) equated for time under tension.<h4>Methods</h4>A sample of 40 healthy young men (aged, 23.2 ± 4.0 years; height, 177.3 ± 7.0 cm; BMI, 24.3 ± 2.2) performed two sessions of 8 sets of bicep curls with a one-week recovery interval between the trials. In the HRP protocol, 20 repetitions were performed with a cadence of 2 seconds of eccentric and 1 second of concentric, while in the MRP protocol 10 repetitions were performed with 4 seconds of eccentric and 2 seconds of concentric. Cadences were controlled by a metronome. At the beginning and end of each of the sessions, blood lactate was taken at 2, 15, and 30 minutes, and rating of perceived exertion (OMNI-RES) was assessed immediately after completion of each session.<h4>Results</h4>There were [bLa-] differences between protocols in the MRP 2 min, (5.2 ±1.4); 15 min, (3.2 ±1.2); 30 min, (1.9 ±0.6); p< 0.05, and the HRP 2 min, (6.1 ±1.6); 15 min, (3.7 ±1.1); 30 min, (2.2 ±0.6); p<0.01. OMNI-RES was higher in HRP, (8.8 ±0.7) than in MRP, (7.7 ±0.9). Additionally, a correlation was found between the RPE and [bLa-] values in the HRP protocol (rs = 0.35, p < 0.01).<h4>Conclusions</h4>Training protocols with high times under tension promote substantial increases in metabolic stress, however, our findings indicate that HRP generates more [bLa-] than MRP. In addition, there were higher RPE values in the HRP protocol compared to MRP in single-joint exercises.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0227640&type=printable |
| spellingShingle | Salvador Vargas-Molina Fernando Martín-Rivera Diego A Bonilla Jorge L Petro Leandro Carbone Ramón Romance Manuel deDiego Brad J Schoenfeld Javier Benítez-Porres Comparison of blood lactate and perceived exertion responses in two matched time-under-tension protocols. PLoS ONE |
| title | Comparison of blood lactate and perceived exertion responses in two matched time-under-tension protocols. |
| title_full | Comparison of blood lactate and perceived exertion responses in two matched time-under-tension protocols. |
| title_fullStr | Comparison of blood lactate and perceived exertion responses in two matched time-under-tension protocols. |
| title_full_unstemmed | Comparison of blood lactate and perceived exertion responses in two matched time-under-tension protocols. |
| title_short | Comparison of blood lactate and perceived exertion responses in two matched time-under-tension protocols. |
| title_sort | comparison of blood lactate and perceived exertion responses in two matched time under tension protocols |
| url | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0227640&type=printable |
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