Effect of 1-week betalain-rich beetroot concentrate supplementation on cycling performance and select physiological parameters View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2018-08-28

AUTHORS

Petey W. Mumford, Wesley C. Kephart, Matthew A. Romero, Cody T. Haun, C. Brooks Mobley, Shelby C. Osburn, James C. Healy, Angelique N. Moore, David D. Pascoe, William C. Ruffin, Darren T. Beck, Jeffrey S. Martin, Michael D. Roberts, Kaelin C. Young

ABSTRACT

PurposeBetalains are indole-derived pigments found in beet root, and recent studies suggest that they may exert ergogenic effects. Herein, we examined if supplementation for 7 days with betalain-rich beetroot concentrate (BLN) improved cycling performance or altered hemodynamic and serum analytes prior to, during and following a cycling time trial (TT).MethodsTwenty-eight trained male cyclists (29 ± 10 years, 77.3 ± 13.3 kg, and 3.03 ± 0.62 W/kg) performed a counterbalanced crossover study whereby BLN (100 mg/day) or placebo (PLA) supplementation occurred over 7 days with a 1-week washout between conditions. On the morning of day seven of each supplementation condition, participants consumed one final serving of BLN or PLA and performed a 30-min cycling TT with concurrent assessment of several physiological variables and blood markers.ResultsBLN supplementation improved average absolute power compared to PLA (231.6 ± 36.2 vs. 225.3 ± 35.8 W, p = 0.050, d = 0.02). Average relative power, distance traveled, blood parameters (e.g., pH, lactate, glucose, NOx) and inflammatory markers (e.g., IL-6, IL-8, IL-10, TNFα) were not significantly different between conditions. BLN supplementation significantly improved exercise efficiency (W/ml/kg/min) in the last 5 min of the TT compared to PLA (p = 0.029, d = 0.45). Brachial artery blood flow in the BLN condition, immediately post-exercise, tended to be greater compared to PLA (p = 0.065, d = 0.32).ConclusionsWe report that 7 days of BLN supplementation modestly improves 30-min TT power output, exercise efficiency as well as post-exercise blood flow without increasing plasma NOx levels or altering blood markers of inflammation, oxidative stress, and/or hematopoiesis. More... »

PAGES

2465-2476

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00421-018-3973-1

DOI

http://dx.doi.org/10.1007/s00421-018-3973-1

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1106385279

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/30155761


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28 schema:description PurposeBetalains are indole-derived pigments found in beet root, and recent studies suggest that they may exert ergogenic effects. Herein, we examined if supplementation for 7 days with betalain-rich beetroot concentrate (BLN) improved cycling performance or altered hemodynamic and serum analytes prior to, during and following a cycling time trial (TT).MethodsTwenty-eight trained male cyclists (29 ± 10 years, 77.3 ± 13.3 kg, and 3.03 ± 0.62 W/kg) performed a counterbalanced crossover study whereby BLN (100 mg/day) or placebo (PLA) supplementation occurred over 7 days with a 1-week washout between conditions. On the morning of day seven of each supplementation condition, participants consumed one final serving of BLN or PLA and performed a 30-min cycling TT with concurrent assessment of several physiological variables and blood markers.ResultsBLN supplementation improved average absolute power compared to PLA (231.6 ± 36.2 vs. 225.3 ± 35.8 W, p = 0.050, d = 0.02). Average relative power, distance traveled, blood parameters (e.g., pH, lactate, glucose, NOx) and inflammatory markers (e.g., IL-6, IL-8, IL-10, TNFα) were not significantly different between conditions. BLN supplementation significantly improved exercise efficiency (W/ml/kg/min) in the last 5 min of the TT compared to PLA (p = 0.029, d = 0.45). Brachial artery blood flow in the BLN condition, immediately post-exercise, tended to be greater compared to PLA (p = 0.065, d = 0.32).ConclusionsWe report that 7 days of BLN supplementation modestly improves 30-min TT power output, exercise efficiency as well as post-exercise blood flow without increasing plasma NOx levels or altering blood markers of inflammation, oxidative stress, and/or hematopoiesis.
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38 ConclusionsWe
39 Herein
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41 NOx levels
42 PLA
43 PurposeBetalains
44 Recent studies
45 ResultsBLN supplementation
46 TT power output
47 absolute power
48 analytes
49 artery blood flow
50 assessment
51 average absolute power
52 average relative power
53 beet roots
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100 roots
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