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Effect of New Zealand Blackcurrant Extract on Cycling Performance and Substrate Oxidation in Normobaric Hypoxia in Trained Cyclists

New Zealand blackcurrant (NZBC) extract enhanced exercise-induced fat oxidation and 16.1 km cycling time trial (TT) in normobaric normoxia. The effect of NZBC extract on physiological and metabolic responses was examined during steady state cycling and a 16.1 km TT in normobaric hypoxia. This study...

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Autores principales: Willems, Mark Elisabeth Theodorus, Şahin, Mehmet Akif, Berendsen, Tim, Cook, Matthew David
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6473752/
https://www.ncbi.nlm.nih.gov/pubmed/30884866
http://dx.doi.org/10.3390/sports7030067
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author Willems, Mark Elisabeth Theodorus
Şahin, Mehmet Akif
Berendsen, Tim
Cook, Matthew David
author_facet Willems, Mark Elisabeth Theodorus
Şahin, Mehmet Akif
Berendsen, Tim
Cook, Matthew David
author_sort Willems, Mark Elisabeth Theodorus
collection PubMed
description New Zealand blackcurrant (NZBC) extract enhanced exercise-induced fat oxidation and 16.1 km cycling time trial (TT) in normobaric normoxia. The effect of NZBC extract on physiological and metabolic responses was examined during steady state cycling and a 16.1 km TT in normobaric hypoxia. This study used a randomized, double-blind, crossover design. Eleven healthy male cyclists (age: 38 ± 11 y, height: 179 ± 4 cm, body mass: 76 ± 8 kg, [Formula: see text] O(2max): 47 ± 5 mL·kg(−1)·min(−1), mean ± SD) ingested NZBC extract (600 mg·day(−1) CurraNZ® containing 210 mg anthocyanins) or a placebo (600 mg microcrystalline cellulose M102) for seven days (washout 14 days) and performed a steady state cycling test (3 × 10 min at 45%, 55% and 65% [Formula: see text] O(2max)) followed by a 16.1 km TT at a simulated altitude of ~2500 meters (~15% of O(2)). Indirect calorimetry was used to measure substrate oxidation during steady state cycling. Intake of NZBC extract had no effect on blood glucose and lactate, heart rate, substrate oxidation, and respiratory exchange ratio during steady state cycling at 45%, 55% and 65% [Formula: see text] O(2max), and on 16.1 km TT performance (placebo: 1685 ± 92 s, NZBC extract: 1685 ± 99 s, P = 0.97). Seven days intake of New Zealand blackcurrant extract does not change exercise-induced metabolic responses and 16.1 km cycling time trial performance for moderately endurance-trained men in normobaric hypoxia.
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spelling pubmed-64737522019-04-29 Effect of New Zealand Blackcurrant Extract on Cycling Performance and Substrate Oxidation in Normobaric Hypoxia in Trained Cyclists Willems, Mark Elisabeth Theodorus Şahin, Mehmet Akif Berendsen, Tim Cook, Matthew David Sports (Basel) Article New Zealand blackcurrant (NZBC) extract enhanced exercise-induced fat oxidation and 16.1 km cycling time trial (TT) in normobaric normoxia. The effect of NZBC extract on physiological and metabolic responses was examined during steady state cycling and a 16.1 km TT in normobaric hypoxia. This study used a randomized, double-blind, crossover design. Eleven healthy male cyclists (age: 38 ± 11 y, height: 179 ± 4 cm, body mass: 76 ± 8 kg, [Formula: see text] O(2max): 47 ± 5 mL·kg(−1)·min(−1), mean ± SD) ingested NZBC extract (600 mg·day(−1) CurraNZ® containing 210 mg anthocyanins) or a placebo (600 mg microcrystalline cellulose M102) for seven days (washout 14 days) and performed a steady state cycling test (3 × 10 min at 45%, 55% and 65% [Formula: see text] O(2max)) followed by a 16.1 km TT at a simulated altitude of ~2500 meters (~15% of O(2)). Indirect calorimetry was used to measure substrate oxidation during steady state cycling. Intake of NZBC extract had no effect on blood glucose and lactate, heart rate, substrate oxidation, and respiratory exchange ratio during steady state cycling at 45%, 55% and 65% [Formula: see text] O(2max), and on 16.1 km TT performance (placebo: 1685 ± 92 s, NZBC extract: 1685 ± 99 s, P = 0.97). Seven days intake of New Zealand blackcurrant extract does not change exercise-induced metabolic responses and 16.1 km cycling time trial performance for moderately endurance-trained men in normobaric hypoxia. MDPI 2019-03-16 /pmc/articles/PMC6473752/ /pubmed/30884866 http://dx.doi.org/10.3390/sports7030067 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Willems, Mark Elisabeth Theodorus
Şahin, Mehmet Akif
Berendsen, Tim
Cook, Matthew David
Effect of New Zealand Blackcurrant Extract on Cycling Performance and Substrate Oxidation in Normobaric Hypoxia in Trained Cyclists
title Effect of New Zealand Blackcurrant Extract on Cycling Performance and Substrate Oxidation in Normobaric Hypoxia in Trained Cyclists
title_full Effect of New Zealand Blackcurrant Extract on Cycling Performance and Substrate Oxidation in Normobaric Hypoxia in Trained Cyclists
title_fullStr Effect of New Zealand Blackcurrant Extract on Cycling Performance and Substrate Oxidation in Normobaric Hypoxia in Trained Cyclists
title_full_unstemmed Effect of New Zealand Blackcurrant Extract on Cycling Performance and Substrate Oxidation in Normobaric Hypoxia in Trained Cyclists
title_short Effect of New Zealand Blackcurrant Extract on Cycling Performance and Substrate Oxidation in Normobaric Hypoxia in Trained Cyclists
title_sort effect of new zealand blackcurrant extract on cycling performance and substrate oxidation in normobaric hypoxia in trained cyclists
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6473752/
https://www.ncbi.nlm.nih.gov/pubmed/30884866
http://dx.doi.org/10.3390/sports7030067
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