The acute impact of dietary nitrate supplementation on the postexercise hypotension response to high intensity interval exercise.
Cardiff Metropolitan University
MetadataShow full item record
Aim: High intensity interval training has emerged as a popular method to achieve chronic reductions in resting blood pressure, while the magnitude post exercise hypotension has been shown to be highly correlated with chronic reductions in resting blood pressure. Additionally, acute and chronic beetroot juice supplementation lowers blood pressure at rest and aids perfusion during exercise. However, there is little research on the hypotensive response to high intensity interval exercise and beetroot supplementation. Therefore primary aim of this study was to investigate the effect of acute BR supplementation on the PEH response to HIE. Methods: 5 male and 5 female non-hypertensive participants (age 19.9 ± 0.88 years) were recruited from a university population. Participants completed two identical high intensity interval exercise protocols on separate days, following supplementation of either concentrated beetroot juice or a placebo supplement 2.5 hours before exercise. Hemodynamic variables were measured for 30 minutes before exercise and then one hour after exercise cessation. Results: Two-way analysis of variance identified that SBP, DBP, and MAP all significantly dropped below their baseline values following high intensity interval exercise (P<0.05). Additionally, SBP and PP were significantly lower after exercise following beetroot juice supplementation compared to the placebo supplement (P<0.05). Gender sub-analysis showed the peak reduction in systolic blood pressure was greater with beetroot supplementation Conclusion: HIE produced a significant PEH response indicative of significant chronic training adaptations that could reduce CVD incidence. Furthermore, acute BR supplementation before HIE increased this response in males.
Showing items related by title, author, subject and abstract.
The Effect of Acute Beetroot Juice Supplementation on Blood Pressure During High Intensity Interval Exercise Wort, Georgina (Cardiff Metropolitan University, 2015)Introduction: Hypertension is a major cardiovascular disease (CVD) risk factor. Low aerobic fitness is a contributing factor to the prevalence of hypertension. Previous research has shown that high intensity interval ...
Mayhook, Matthew (Cardiff Metropolitan University, 2016-03-09)Aim: The primary aim of this study was to establish the health benefits of the acute ingestion of a nitrate (NO3-) rich beetroot juice supplementation effects on the hypotensive response to an acute bout of continuous ...
Does acute dietary nitrate supplementation enhance well-trained hockey players’ performance in game specific intermittent exercise? Daymond, Samuel (Cardiff Metropolitan University, 2015)Previous research has suggested that dietary supplementation of inorganic nitrate (NO3) through the ingestion of beetroot juice, may improve endurance and extend tolerance to high intensity exercise. The possible ergogenic ...