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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
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]
Total Authors: 10
Affiliation:
[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
Total Affiliations: 4
Document type: Journal article
Source: JOURNAL OF THE AMERICAN COLLEGE OF NUTRITION; v. 40, n. 4 MAY 2020.
Web of Science Citations: 0
Abstract

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)

FAPESP's process: 16/02994-1 - Investigation of the involvement of body composition in heart rate dynamics during recovery from submaximal physical exercise and muscle isometric contraction in physically active subjects
Grantee:Vitor Engrácia Valenti
Support Opportunities: Regular Research Grants