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Acute p‑synephrine ingestion increases whole‑body fat oxidation during 1‑h of cycling at Fatmax
dc.contributor.author | Gutiérrez-Hellín, Jorge | |
dc.contributor.author | Ruiz-Moreno, Carlos | |
dc.contributor.author | Del Coso, J. | |
dc.date.accessioned | 2024-02-06T12:17:05Z | |
dc.date.available | 2024-02-06T12:17:05Z | |
dc.date.issued | 2019-11-05 | |
dc.identifier.citation | Gutiérrez-Hellín, J., Ruiz-Moreno, C., & Del Coso, J. (2020). Acute p-synephrine ingestion increases whole-body fat oxidation during 1-h of cycling at Fatmax. European journal of nutrition, 59(7), 3341–3345. https://doi.org/10.1007/s00394-019-02101-6 | es |
dc.identifier.issn | 1436-6215 | |
dc.identifier.other | https://pubmed.ncbi.nlm.nih.gov/31691018/ | es |
dc.identifier.other | https://link.springer.com/article/10.1007/s00394-019-02101-6 | es |
dc.identifier.uri | http://hdl.handle.net/20.500.12020/1259 | |
dc.description.abstract | Purpose: p-Synephrine, the principal alkaloid of bitter orange (Citrus aurantium), is widely used in dietary supplements for weight loss due to its purported effect of increasing fat oxidation. However, there is a paucity of scientific information about its effectiveness in enhancing fat oxidation during exercise. The aim of this investigation was to determine the effect of an acute dose of p-synephrine on substrate oxidation during prolonged and constant intensity exercise. Methods: In a double-blind and randomized experiment, 14 healthy subjects performed two acute experimental trials after ingesting either p-synephrine (3 mg kg-1) or a placebo (cellulose). Energy expenditure and fat oxidation rates were continuously measured by indirect calorimetry during 1 h of continuous cycling at Fatmax, the intensity that induces maximal fat oxidation rate. Results: In comparison to the placebo, energy expenditure during 1 h of cycling remained unchanged with p-synephrine (698 ± 129 vs. 686 ± 123 kcal, P = 0.08). However, p-synephrine increased whole-body fat oxidation (33.6 ± 10.4 vs. 37.3 ± 9.8 g, P < 0.01) while also reducing carbohydrate oxidation (99.5 ± 30.4 vs. 85.0 ± 28.4 g, P < 0.01). However, the magnitude of the shift on substrate oxidation induced by p-synephrine was small. Conclusion: Acute ingestion of p-synephrine augments fat oxidation during prolonged and constant-intensity exercise. | es |
dc.language.iso | en | es |
dc.publisher | Springer | es |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | Acute p‑synephrine ingestion increases whole‑body fat oxidation during 1‑h of cycling at Fatmax | es |
dc.type | article | es |
dc.identifier.doi | 10.1007/s00394-019-02101-6 | |
dc.journal.title | European Journal of nutrition | es |
dc.page.initial | 3341 | es |
dc.page.final | 3345 | es |
dc.rights.accessRights | openAccess | es |
dc.subject.area | Ciencias de la Actividad Física y del Deporte | es |
dc.subject.keyword | Nutrition supplement | es |
dc.subject.keyword | Exercise | es |
dc.subject.keyword | Citrus aurantium | es |
dc.subject.keyword | Bitter orange | es |
dc.subject.keyword | Maximal fat oxidation | es |
dc.subject.unesco | 3206 Ciencias de la Nutrición | es |
dc.volume.number | 59 | es |