Acute Effects of New Zealand Blackcurrant Extract on Cycling Time-Trial Are Performance Dependent in Endurance-Trained Cyclists: A Home-Based Study
The intake of anthocyanin-rich New Zealand blackcurrant (NZBC) extract (300 mg per day) over a week enhanced 16.1 km cycling time trial (TT) performance in endurance-trained cyclists without acute performance effects. In the present study, the acute effects of an intake of 900 mg of NZBC extract 2 h...
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MDPI AG
2023-04-01
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| Series: | Sports |
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| Online Access: | https://www.mdpi.com/2075-4663/11/5/93 |
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| author | Stefano Montanari Sam D. Blacker Mark E. T. Willems |
| author_facet | Stefano Montanari Sam D. Blacker Mark E. T. Willems |
| author_sort | Stefano Montanari |
| collection | DOAJ |
| description | The intake of anthocyanin-rich New Zealand blackcurrant (NZBC) extract (300 mg per day) over a week enhanced 16.1 km cycling time trial (TT) performance in endurance-trained cyclists without acute performance effects. In the present study, the acute effects of an intake of 900 mg of NZBC extract 2 h before performing the 16.1 km cycling TT were examined. A total of 34 cyclists (26 males; 8 females) (age: 38 ± 7 years, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mover accent="true"><mrow><mi>V</mi></mrow><mo>˙</mo></mover></mrow></semantics></math></inline-formula>O<sub>2max</sub>: 57 ± 5 mL·kg<sup>−1</sup>·min<sup>−1</sup>) completed 4 16.1 km TTs (2 familiarization and 2 experimental trials) over 4 mornings on a home turbo-trainer connected with the online training simulator ZWIFT. There was no difference in time to complete the 16.1 km TT between conditions (placebo: 1422 ± 104 s; NZBC extract: 1414 ± 93 s, <i>p</i> = 0.07). However, when participants were split between faster (<1400 s; 1 female; 16 males) and slower (>1400 s; 7 females; 10 males) cyclists based on average familiarization TTs, a difference in TT performance was observed only in the slower group (placebo: 1499 ± 91 s; NZBC extract: 1479 ± 83 s, <i>p</i> = 0.02). At 12 km (quartile analysis), power output (<i>p</i> = 0.04) and speed (<i>p</i> = 0.04) were higher compared to the placebo with no effects on heart rate and cadence. The acute effects of 900 mg of NZBC extract on a 16.1 km cycling time-trial may depend on the performance ability of male endurance-trained cyclists. More work is needed to address whether there is a sex-specific time-trial effect of NZBC extract independent of performance ability. |
| first_indexed | 2024-03-11T03:19:34Z |
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| institution | Directory Open Access Journal |
| issn | 2075-4663 |
| language | English |
| last_indexed | 2024-03-11T03:19:34Z |
| publishDate | 2023-04-01 |
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| spelling | doaj.art-8c451e02bb324f82ad8d91f9cb6c93172023-11-18T03:17:47ZengMDPI AGSports2075-46632023-04-011159310.3390/sports11050093Acute Effects of New Zealand Blackcurrant Extract on Cycling Time-Trial Are Performance Dependent in Endurance-Trained Cyclists: A Home-Based StudyStefano Montanari0Sam D. Blacker1Mark E. T. Willems2Institute of Sport, Nursing and Allied Health, College Lane, University of Chichester, Chichester PO19 6PE, UKInstitute of Sport, Nursing and Allied Health, College Lane, University of Chichester, Chichester PO19 6PE, UKInstitute of Sport, Nursing and Allied Health, College Lane, University of Chichester, Chichester PO19 6PE, UKThe intake of anthocyanin-rich New Zealand blackcurrant (NZBC) extract (300 mg per day) over a week enhanced 16.1 km cycling time trial (TT) performance in endurance-trained cyclists without acute performance effects. In the present study, the acute effects of an intake of 900 mg of NZBC extract 2 h before performing the 16.1 km cycling TT were examined. A total of 34 cyclists (26 males; 8 females) (age: 38 ± 7 years, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mover accent="true"><mrow><mi>V</mi></mrow><mo>˙</mo></mover></mrow></semantics></math></inline-formula>O<sub>2max</sub>: 57 ± 5 mL·kg<sup>−1</sup>·min<sup>−1</sup>) completed 4 16.1 km TTs (2 familiarization and 2 experimental trials) over 4 mornings on a home turbo-trainer connected with the online training simulator ZWIFT. There was no difference in time to complete the 16.1 km TT between conditions (placebo: 1422 ± 104 s; NZBC extract: 1414 ± 93 s, <i>p</i> = 0.07). However, when participants were split between faster (<1400 s; 1 female; 16 males) and slower (>1400 s; 7 females; 10 males) cyclists based on average familiarization TTs, a difference in TT performance was observed only in the slower group (placebo: 1499 ± 91 s; NZBC extract: 1479 ± 83 s, <i>p</i> = 0.02). At 12 km (quartile analysis), power output (<i>p</i> = 0.04) and speed (<i>p</i> = 0.04) were higher compared to the placebo with no effects on heart rate and cadence. The acute effects of 900 mg of NZBC extract on a 16.1 km cycling time-trial may depend on the performance ability of male endurance-trained cyclists. More work is needed to address whether there is a sex-specific time-trial effect of NZBC extract independent of performance ability.https://www.mdpi.com/2075-4663/11/5/93anthocyaninssports nutritionsupplementexercise physiologycycling performance |
| spellingShingle | Stefano Montanari Sam D. Blacker Mark E. T. Willems Acute Effects of New Zealand Blackcurrant Extract on Cycling Time-Trial Are Performance Dependent in Endurance-Trained Cyclists: A Home-Based Study Sports anthocyanins sports nutrition supplement exercise physiology cycling performance |
| title | Acute Effects of New Zealand Blackcurrant Extract on Cycling Time-Trial Are Performance Dependent in Endurance-Trained Cyclists: A Home-Based Study |
| title_full | Acute Effects of New Zealand Blackcurrant Extract on Cycling Time-Trial Are Performance Dependent in Endurance-Trained Cyclists: A Home-Based Study |
| title_fullStr | Acute Effects of New Zealand Blackcurrant Extract on Cycling Time-Trial Are Performance Dependent in Endurance-Trained Cyclists: A Home-Based Study |
| title_full_unstemmed | Acute Effects of New Zealand Blackcurrant Extract on Cycling Time-Trial Are Performance Dependent in Endurance-Trained Cyclists: A Home-Based Study |
| title_short | Acute Effects of New Zealand Blackcurrant Extract on Cycling Time-Trial Are Performance Dependent in Endurance-Trained Cyclists: A Home-Based Study |
| title_sort | acute effects of new zealand blackcurrant extract on cycling time trial are performance dependent in endurance trained cyclists a home based study |
| topic | anthocyanins sports nutrition supplement exercise physiology cycling performance |
| url | https://www.mdpi.com/2075-4663/11/5/93 |
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