Effect of 3 and 6 mg/kg of caffeine on fat oxidation during exercise in healthy active females.
dc.contributor.author | Varillas Delgado, David | |
dc.contributor.author | Aguilar Navarro, Millán | |
dc.contributor.author | Muñoz Moreno, Alejandro | |
dc.contributor.author | López Samanés, Álvaro | |
dc.contributor.author | Ruiz-Moreno, Carlos | |
dc.contributor.author | Posada Ayala, María | |
dc.contributor.author | Amaro-Gahete, Francisco J. | |
dc.contributor.author | Del Coso, Juan | |
dc.contributor.author | Gutiérrez Hellín, Jorge | |
dc.date.accessioned | 2024-02-27T20:54:13Z | |
dc.date.available | 2024-02-27T20:54:13Z | |
dc.date.issued | 2023 | |
dc.description.abstract | The aim of this study was to investigate the effect of 3 and 6 mg of caffeine per kg of body mass (mg/kg) on whole-body substrate oxidation during an incremental cycling exercise test in healthy active women. Using a double-blind placebo-controlled counterbalanced experimental design, 14 subjects performed three identical exercise trials after the ingestion of 3 or 6 mg/kg of caffeine or placebo. The exercise trials consisted of an incremental test on a cycle ergometer with 3-min stages at workloads from 30 to 70% of maximal oxygen uptake (VO2max). Substrate oxidation rates were measured by indirect calorimetry. During exercise, there was a significant effect of substance (F = 5.221; p = 0.016) on fat oxidation rate. In comparison to the placebo, 3 mg/kg of caffeine increased fat oxidation rates at 30 to 60% of VO2max (all p < 0.050) and 6 mg/kg at 30 to 50% of VO2max (all p < 0.050). There was also a significant effect of substance (F = 5.221; p = 0.016) on carbohydrate oxidation rate (F = 9.632; p < 0.001). In comparison to placebo, both caffeine doses decreased carbohydrate oxidation rates at 40 to 60% VO2max (all p < 0.050). The maximal rate of fat oxidation with placebo was 0.24 ± 0.03 g/min, which increased with 3 mg/kg to 0.29 ± 0.04 g/min (p = 0.032) and to 0.29 ± 0.03 with 6 mg/kg of caffeine (p = 0.042). Acute intake of caffeine improves the utilization of fat as a fuel during submaximal aerobic exercise in healthy active women with an effect of similar magnitude after the intake of 3 and 6 mg of caffeine per kg of body mass. Thus, the use of 3 mg/kg of caffeine would be more recommended than 6 mg/kg for women seeking increased fat utilization during submaximal exercise. | spa |
dc.description.extent | 533 KB | spa |
dc.identifier.doi | 10.5114/biolsport.2023.121321 | spa |
dc.identifier.issn | 0860-021X | spa |
dc.identifier.uri | https://hdl.handle.net/10641/4155 | |
dc.language.iso | eng | spa |
dc.publisher | Biology of Sport | spa |
dc.relation.publisherversion | https://www.termedia.pl/Effect-of-3-and-6-mg-kg-of-caffeine-on-fat-oxidation-during-exercise-in-healthy-active-women,78,48217,1,1.html | spa |
dc.rights | Atribución-NoComercial-SinDerivadas 3.0 España | * |
dc.rights.accessRights | open access | spa |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.title | Effect of 3 and 6 mg/kg of caffeine on fat oxidation during exercise in healthy active females. | spa |
dc.type | journal article | spa |
dc.type.hasVersion | AM | spa |
dspace.entity.type | Publication | |
relation.isAuthorOfPublication | 027915bc-0f59-485d-8b41-bfd34ba3fa94 | |
relation.isAuthorOfPublication | 1263b63b-00bc-48a9-add2-dbfbdf3b4e6c | |
relation.isAuthorOfPublication | d741b174-6a67-4857-a659-3d660adce645 | |
relation.isAuthorOfPublication | 6c91a821-6154-4a36-b305-d1f26211285c | |
relation.isAuthorOfPublication | 8a87eb52-e74a-4481-ba6d-4216eef6cded | |
relation.isAuthorOfPublication | 1cccb91f-5305-4dcf-aa87-7e567976cc29 | |
relation.isAuthorOfPublication.latestForDiscovery | 027915bc-0f59-485d-8b41-bfd34ba3fa94 |
Files
Original bundle
1 - 1 of 1
Loading...
- Name:
- BS_Art_48217-10.pdf
- Size:
- 532.93 KB
- Format:
- Adobe Portable Document Format
- Description: