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Willems, M.E. 
ORCID: https://orcid.org/0000-0003-4385-8739, Şahin, M.A. ORCID: https://orcid.org/0000-0002-6400-8410, Berendsen, T. and Cook, Matthew ORCID: https://orcid.org/0000-0002-6293-7566
(2019)
Effect of New Zealand Blackcurrant Extract on Cycling Performance and Substrate Oxidation in Normobaric Hypoxia in Trained Cyclists.
Sports, 7 (3).
e67.
ISSN 2075-4663
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Effect of New Zealand Blackcurrant Extract on Cycling Performance Willems et al.pdf - Published Version Available under License Creative Commons Attribution. Download (552kB) | Preview |
Abstract
This study explored New Zealand blackcurrant (NZBC) extract for enhanced exercise-induced fat oxidation and 16.1 km cycling time trial (TT) performance 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, V ˙ O2max: 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% V ˙ O2max) followed by a 16.1 km TT at a simulated altitude of ~2500 meters (~15% of O2). 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% V ˙ O2max, 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.
| Item Type: | Article |
|---|---|
| Additional Information: | This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0). https://creativecommons.org/licenses/by/4.0/ |
| Uncontrolled Discrete Keywords: | time trial, substrate oxidation, hypoxia, anthocyanins, indirect calorimetry, New Zealand blackcurrant, sports nutrition |
| Subjects: | Q Science > QP Physiology |
| Divisions: | College of Business, Psychology and Sport > School of Sport and Exercise Science |
| Related URLs: | |
| Copyright Info: | Open access article |
| SWORD Depositor: | Prof. Pub Router |
| Depositing User: | Matthew Cook |
| Date Deposited: | 19 Mar 2019 08:48 |
| Last Modified: | 17 Jun 2020 17:28 |
| URI: | https://eprints.worc.ac.uk/id/eprint/7737 |
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