Beetroot (Beta Vulgaris L.) Extract Acutely Improves Heart Rate Variability Recovery Following Strength Exercise: A Randomized, Double-Blind, Placebo-Controlled Crossover Trial-Pilot Study

Autor(es)

Benjamim, Cicero Jonas R. ^[1] ; Junior, Francisco Wellington S. ^[2] ; de Figueiredo, Maria Iris L. S. ^[2] ; Benjamim, Cicera Josilnia R. ^[2] ; Ferro Cavalcante, Taisy C. ^[1] ; Marcelino da Silva, Amanda A. ^[1] ; Monteiro, Larissa Raylane L. ^[2] ; Santana, Milana Drumond R. ^[2] ; Garner, David M. ^[3] ; Valenti, Vitor E. ^[4]

Afiliação do(s) autor(es)

^[1] Univ Pernambuco, Dev Nutr Phytotherapy & Hyg Res Grp, Petrolina, PE - Brazil

^[2] Univ Ctr Juazeiro do Norte, Physiol & Collect Sci Nucleus, Juazeiro Do Norte, CE - Brazil

^[3] Oxford Brookes Univ, Fac Hlth & Life Sci, Dept Biol & Med Sci, Cardioresp Res Grp, Oxford - England

^[4] Sao Paulo State Univ, Auton Nervous Syst Ctr CESNA, UNESP, Av Hygino Muzzi Filho 737, BR-17525900 Marilia, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF THE AMERICAN COLLEGE OF NUTRITION; v. 40, n. 4 MAY 2020.
• Citações Web of Science: 0

Resumo

Objective:We assessed the acute effect of beetroot extract intake on cardiovascular and autonomic recovery subsequent to strength exercise. Methods:This is a crossover, randomized, double-blind and placebo-controlled trial. We assessed 16 subjects but only 12 healthy male adults completed the two protocols in two randomized days: Beetroot extract (600 mg in capsule) and placebo (600 mg starch in capsule). Beetroot extract or placebo was ingested, the subjects endured 120 minutes seated at rest, followed by a 75% 1RM strength exercise and then remained seated for 60 minutes at rest. Cardiorespiratory parameters, heart rate (HR) variability (HRV) (SDNN, rMSSD, pNN50, SD1, SD2 HF {[}ms(2)]) were estimated before, during exercise and during recovery from exercise. Results:ingestion of beetroot extract before exercise: accelerates the recovery of SBP following physical effort; improves HR recovery to baseline resting levels (beetroot protocol: change in similar to 62% vs. placebo protocol: change in similar to 80%), and intensifies the return of vagal HR control during recovery after exercise. Conclusions:Beetroot extract acutely improved cardiovascular and autonomic recovery after exercise. (AU)

• Processo FAPESP: 16/02994-1 - Investigação do envolvimento da composição corporal na dinâmica da frequência cardíaca durante a recuperação após exercício físico submáximo e contração muscular isométrica em indivíduos fisicamente ativos
• Beneficiário: Vitor Engrácia Valenti
• Modalidade de apoio: Auxílio à Pesquisa - Regular