Beta-Alanine Supplementation Improved 10-km Running Time Trial in Physically Active Adults

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dc.contributor.authorSantana, Jeferson O.
dc.contributor.authorFreitas, Marcelo C. de [UNESP]
dc.contributor.authorSantos, Diana M. dos
dc.contributor.authorRossi, Fabricio E.
dc.contributor.authorLira, Fabio S. [UNESP]
dc.contributor.authorRosa-Neto, Jose C.
dc.contributor.authorCaperuto, Erico C.
dc.contributor.institutionUniv Sao Judas Tadeu
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Fed Piaui
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2018-11-26T17:54:48Z
dc.date.available2018-11-26T17:54:48Z
dc.date.issued2018-08-08
dc.description.abstractThe purpose of this study was to investigate the effects of beta-alanine supplementation on a 10 km running time trial and lactate concentration in physically active adults. Sixteen healthy subjects were divided randomly into two groups: beta-alanine (n = 8) and placebo group (n = 8). The experimental group ingested 5 g/day of beta-alanine plus 1 g of resistant starch, and control group ingested 6 g of resistant starch, both for 23 days. Time to complete a 10-km running time trial and lactate concentration following the test were assessed at baseline and post 23 days. The running training program was performed three times per week on non-consecutive days (day 1: running 7 km; day 2: six sprints of 500 m at maximum speed with 2 min of recovery; day 3: running 12 km). The time to complete a 10-km running time trial decreased significantly only for the beta-alanine group (Pre = 3441 +/- 326.7, Post = 3209 +/- 270.5 s, p < 0.05). When analyzing the delta (Time post minus Time at baseline value) there was a statistically significant difference between the beta-alanine vs placebo group (-168.8 +/- 156.6 vs. -53.60 +/- 78.81 s, p = 0.007), respectively. In addition, the beta-alanine group presented lower blood lactate concentration after the 10-km test (beta-alanine: Pre = 8.45 +/- 1.94 vs. Post = 6.95 +/- 2.44 mmol/L; Placebo: Pre = 8.7 +/- 3.0 vs. Post = 10.8 +/- 2.5 mmol/L, p = 0.03). In conclusion, beta-alanine supplementation improved the 10-km running time trial and reduced lactate concentration in physically active adults.en
dc.description.affiliationUniv Sao Judas Tadeu, Dept Phys Educ, Sao Paulo, Brazil
dc.description.affiliationSao Paulo State Univ, Sch Technol & Sci, Dept Phys Educ, Skeletal Muscle Assessment Lab, Presidente Prudente, Brazil
dc.description.affiliationUniv Fed Piaui, Dept Phys Educ, Immunometab Skeletal Muscle & Exercise Res Grp, Teresina, Brazil
dc.description.affiliationSao Paulo State Univ, Dept Phys Educ, Exercise & Immunometab Res Grp, Presidente Prudente, Brazil
dc.description.affiliationUniv Sao Paulo, Biomed Sci Inst, Sao Paulo, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Sch Technol & Sci, Dept Phys Educ, Skeletal Muscle Assessment Lab, Presidente Prudente, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Dept Phys Educ, Exercise & Immunometab Res Grp, Presidente Prudente, Brazil
dc.format.extent6
dc.identifierhttp://dx.doi.org/10.3389/fphys.2018.01105
dc.identifier.citationFrontiers In Physiology. Lausanne: Frontiers Media Sa, v. 9, 6 p., 2018.
dc.identifier.doi10.3389/fphys.2018.01105
dc.identifier.fileWOS000441067800002.pdf
dc.identifier.issn1664-042X
dc.identifier.urihttp://hdl.handle.net/11449/164499
dc.identifier.wosWOS:000441067800002
dc.language.isoeng
dc.publisherFrontiers Media Sa
dc.relation.ispartofFrontiers In Physiology
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectsport nutrition
dc.subjectendurance training
dc.subjectperformance
dc.subjectsupplementation
dc.subjectrunning exercise
dc.titleBeta-Alanine Supplementation Improved 10-km Running Time Trial in Physically Active Adultsen
dc.typeArtigo
dcterms.rightsHolderFrontiers Media Sa

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Artigos - Estatística - FCT