Publication
A single dose of beetroot juice not enhance performance during intervallic swimming efforts
| dc.contributor.author | Moreno-Heredero, Berta | |
| dc.contributor.author | Morencos, Esther | |
| dc.contributor.author | Morais, J.E. | |
| dc.contributor.author | Barbosa, Tiago M. | |
| dc.contributor.author | Veiga, Santiago | |
| dc.date.accessioned | 2024-03-14T13:51:37Z | |
| dc.date.available | 2024-03-14T13:51:37Z | |
| dc.date.issued | 2024 | |
| dc.description.abstract | Despite the numerous scientific evidence on the topic, there is no clear and consistent answer that clarifies the true effects of beet- root juice (BJ) supplementation on different types of physical per- formance. This study examined whether an acute intake of BJ im- proves swimming performance, physiological variables of anaer- obic metabolism, or subjective measures during high-intensity in- terval exercise with incomplete rest in competitive swimmers. Eighteen competitive swimmers (nine females and nine males) participated in this cross-over randomized, placebo-controlled, double-blind and counterbalanced study. In two trials, swimmers ingested BJ (70 mL, 6.4 mmol/400 mg NO3-) or placebo (PLA) (70 mL, 0.04 mmol/3 mg NO3-) three hours before a 2×6×100 m maximal effort with 40 seconds rest between repetitions and three minutes between blocks. The 100 m times showed no differences between groups (p > 0.05), but there was an interaction between block×repetition×condition (F5 = 3.10; p = 0.046; ηp2 = 0.54), in- dicating that the BJ group decreased the time of the sixth repeti- tion of block2 compared to block1 (p = 0.01). Lactate concentra- tion showed no differences between conditions (p > 0.05), but there was a main effect of block (ηp2 = 0.60) and a block×repeti- tion interaction (ηp2 = 0.70), indicating higher values in block2 and increasing values between repetitions in block1. The subjec- tive scales, perception of exertion (RPE) and Total Quality Re- covery (TQR), showed no effects of condition (p > 0.05), but BJ swimmers had a greater TQR in the last repetitions of each block. In conclusion, a single dose of BJ did not enhance intermittent swimming performance or modified the physiological (lactate and heart rate) or subjective (RPE and TQR) variables; although there was a possible positive effect on the exercise tolerance at the end of effort. | pt_PT |
| dc.description.sponsorship | We thank the swimmers and coaches who participated in the experiment for their valuable input on the details of the study. We also thank all the researchers who assisted in the data collection process, in particular MMP and ACS for their unconditional support. The other authors declare no potential or actual conflicts of interest. The datasets generated and ana- lyzed during the current study are not publicly available, but are available from the corresponding author who was an organizer of the study. The experiments comply with the current laws of the country where they were performed. | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.citation | Moreno-Heredero, Berta; Morencos, Esther; Morais, Jorge; Barbosa, Tiago M.; Veiga, Santiago (2024). A single dose of beetroot juice not enhance performance during intervallic swimming efforts. Journal of Sports Science & Medicine. eISSN 1303-2968. 23:1, p. 228-235 | pt_PT |
| dc.identifier.doi | 10.52082/jssm.2024.228 | pt_PT |
| dc.identifier.eissn | 1303-2968 | |
| dc.identifier.uri | http://hdl.handle.net/10198/29619 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.publisher | Medical Faculty of Uludag University | pt_PT |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt_PT |
| dc.subject | Nitrate | pt_PT |
| dc.subject | Ergogenic aids | pt_PT |
| dc.subject | Intermittent efforts | pt_PT |
| dc.subject | Swimming performance | pt_PT |
| dc.subject | Exercise tolerance | pt_PT |
| dc.title | A single dose of beetroot juice not enhance performance during intervallic swimming efforts | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 235 | pt_PT |
| oaire.citation.startPage | 228 | pt_PT |
| oaire.citation.title | Journal of Sports Science and Medicine | pt_PT |
| person.familyName | Morais | |
| person.familyName | Barbosa | |
| person.givenName | J.E. | |
| person.givenName | Tiago M. | |
| person.identifier | 867179 | |
| person.identifier.ciencia-id | AA12-BF58-EE60 | |
| person.identifier.ciencia-id | 8B11-BDC4-F6FF | |
| person.identifier.orcid | 0000-0002-6885-0648 | |
| person.identifier.orcid | 0000-0001-7071-2116 | |
| person.identifier.scopus-author-id | 10044856400 | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | article | pt_PT |
| relation.isAuthorOfPublication | 80b13e62-254d-4d46-ad90-8b509ab523a8 | |
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