Ingesting a bitter solution: The sweet touch to increasing short-term cycling performance
Journal article
Etxebarria, Naroa, Ross, Megan L., Clark, Brad and Burke, Louise M.. (2019). Ingesting a bitter solution: The sweet touch to increasing short-term cycling performance. International Journal of Sports Physiology and Performance. 14(6), pp. 727 - 732. https://doi.org/10.1123/ijspp.2018-0554
Authors | Etxebarria, Naroa, Ross, Megan L., Clark, Brad and Burke, Louise M. |
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Abstract | Purpose: The authors investigated the potential benefit of ingesting 2 mM of quinine (bitter tastant) on a 3000-m cycling time-trial (TT) performance. Methods: Nine well-trained male cyclists (maximal aerobic power: 386 [38] W) performed a maximal incremental cycling ergometer test, three 3000-m familiarization TTs, and four 3000-m intervention TTs (∼4 min) on consecutive days. The 4 interventions were (1) 25 mL of placebo, (2) a 25-mL sweet solution, and (3) and (4) repeat 25 mL of 2-mM quinine solutions (Bitter1 and Bitter2), 30 s before each trial. Participants self-selected their gears and were only aware of distance covered. Results: Overall mean power output for the full 3000 m was similar for all 4 conditions: placebo, 348 (45) W; sweet, 355 (47) W; Bitter1, 354 (47) W; and Bitter2, 355 (48) W. However, quinine administration in Bitter1 and Bitter2 increased power output during the first kilometer by 15 ± 11 W and 21 ± 10 W (mean ± 90% confidence limits), respectively, over placebo, followed by a decay of 34 ± 32 W during Bitter1 and Bitter2 during the second kilometer. Bitter2 also induced a 11 ± 13-W increase during the first kilometer compared with the sweet condition. Conclusions: Ingesting 2 mM of quinine can improve cycling performance during the first one-third of a 3000-m TT and could be used for sporting events lasting ∼80 s to potentially improve overall performance. |
Keywords | tastants; sport; exercise; sprint; power output |
Year | 2019 |
Journal | International Journal of Sports Physiology and Performance |
Journal citation | 14 (6), pp. 727 - 732 |
Publisher | Human Kinetics, Inc. |
ISSN | 1555-0265 |
Digital Object Identifier (DOI) | https://doi.org/10.1123/ijspp.2018-0554 |
Scopus EID | 2-s2.0-85071176601 |
Open access | Published as green open access |
Page range | 727 - 732 |
Research Group | Mary MacKillop Institute for Health Research |
Author's accepted manuscript | License All rights reserved File Access Level Open |
Publisher's version | License All rights reserved File Access Level Controlled |
Additional information | Accepted author manuscript version reprinted, by permission, from International Journal of Sports Physiology and Performance, 2019, 14 (6), pp. 727 - 732, https://doi.org/10.1123/ijspp.2018-0554 . © Human Kinetics, Inc. |
Place of publication | United States of America |
https://acuresearchbank.acu.edu.au/item/89q79/ingesting-a-bitter-solution-the-sweet-touch-to-increasing-short-term-cycling-performance
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AM_Etxebarria_2019_Ingesting_a_bitter_solution_the_sweet.pdf | |
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File access level: Open |
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