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Campo DC | Valor | Lengua/Idioma |
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dc.contributor.author | Varillas Delgado, David | es-ES |
dc.contributor.author | Aguilar Navarro, Millán | es-ES |
dc.contributor.author | Muñoz, Alejandro | es-ES |
dc.contributor.author | López Samanes, Álvaro | es-ES |
dc.contributor.author | Ruiz Moreno, Carlos | es-ES |
dc.contributor.author | Posada Ayala, María | es-ES |
dc.contributor.author | Amaro Gahete, Francisco J. | es-ES |
dc.contributor.author | Del Coso, Juan | es-ES |
dc.contributor.author | Gutiérrez Hellín, Jorge | es-ES |
dc.date.accessioned | 2023-09-15T09:11:03Z | - |
dc.date.available | 2023-09-15T09:11:03Z | - |
dc.date.issued | 2023-07-01 | es_ES |
dc.identifier.issn | 0860-021X | es_ES |
dc.identifier.uri | https://doi.org/10.5114/biolsport.2023.121321 | es_ES |
dc.description | Artículos en revistas | es_ES |
dc.description.abstract | . | es-ES |
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. | en-GB |
dc.format.mimetype | application/pdf | es_ES |
dc.language.iso | en-GB | es_ES |
dc.rights | es_ES | |
dc.rights.uri | es_ES | |
dc.source | Revista: Biology of Sport, Periodo: 3, Volumen: 40, Número: 3, Página inicial: 827, Página final: 834 | es_ES |
dc.title | Effect of 3 and 6 mg/kg of caffeine on fat oxidation during exercise in healthy active females | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.description.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.rights.holder | La editorial no permite el depósito en abierto | es_ES |
dc.rights.accessRights | info:eu-repo/semantics/restrictedAccess | es_ES |
dc.keywords | . | es-ES |
dc.keywords | Stimulant Phytochemical Substrate oxidation Endurance exercise Female athletes | en-GB |
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