Effects of beetroot juice supplementation on anaerobic exercise performance

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dc.contributor.authorPinder, Mark
dc.contributor.examiningcommitteeAliani, Michel (Human Nutritional Sciences)en_US
dc.contributor.examiningcommitteePeeler, Jason (Human Anatomy and Cell Science)en_US
dc.contributor.supervisorMyrie, Semone (Human Nutritional Sciences)en_US
dc.date.accessioned2019-01-09T15:46:28Z
dc.date.available2019-01-09T15:46:28Z
dc.date.issued2018-12-21en_US
dc.date.submitted2018-12-21T17:46:46Zen
dc.degree.disciplineHuman Nutritional Sciencesen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractThe study objective was to evaluate the dose-dependent effects of dietary nitrate supplement on dynamic, multi-joint exercise performance. Thirteen males (mean age, 25.2 ± 2.7 years; squat 1-repetition-maximum 146 ± 33 kg) completed a randomized, double-blind, crossover study. Participants consumed beetroot juice with 8 mmol (BRH) or 1.2 mmol nitrate (BRL), or a placebo (PLA) for seven days, executed a dynamic resistance exercise, and seven-day washout between treatments. Assessment included plasma nitrate/nitrite (NOx) levels, blood lactate, gross motor unit efficiency; measured by electromyography (EMG), during isometric contractions pre, intra, and post-exercise, and exercise repetition to failure. BRH elevated (P < 0.0001) plasma NOx compared to BRL and PLA. BRH and BRL increased mean peak EMG amplitude compared to PLA (79.1 ± 16.3%, 77.5 ± 9.7% and 70.0 ± 9.5% respectively), but it was not significant (P > 0.05). No differences (P > 0.05) were observed in any other outcome. Even 8 mmol nitrate may not decrease neuromuscular fatigue nor enhance resistance exercise performance in some recreational athletes.en_US
dc.description.noteFebruary 2019en_US
dc.identifier.urihttp://hdl.handle.net/1993/33673
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectNitrateen_US
dc.subjectExerciseen_US
dc.subjectBeetrooten_US
dc.subjectNitric oxideen_US
dc.subjectElectromyographyen_US
dc.titleEffects of beetroot juice supplementation on anaerobic exercise performanceen_US
dc.typemaster thesisen_US
local.subject.manitobayesen_US
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