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Caffeinated energy drinks improve volleyball performance in elite female players.
dc.contributor.author | Pérez-López, A. | |
dc.contributor.author | Salinero, J.J. | |
dc.contributor.author | Abián-Vicen, J. | |
dc.contributor.author | Valadés, D. | |
dc.contributor.author | Lara, B | |
dc.contributor.author | Hernandez, Carlos | |
dc.contributor.author | Areces, F. | |
dc.contributor.author | González, C. | |
dc.contributor.author | Del Coso, J. | |
dc.date.accessioned | 2017-07-27T10:26:20Z | |
dc.date.available | 2017-07-27T10:26:20Z | |
dc.date.issued | 2015 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12020/352 | |
dc.description.abstract | PURPOSE: The objective of this study is to determine the effects of a caffeine-containing energy drink on female volleyball players' performance. METHODS: Thirteen elite female volleyball players ingested 3 mg·kg of caffeine with an energy drink or the same drink without caffeine (placebo drink) in a double-blind and randomized study. Then, participants performed the following: standing spike, jumping spike, spike jump, blocking jump, squat jump, countermovement jump, manual dynamometry, and the agility t-test. A simulated volleyball game was played, videotaped, and notated afterward. RESULTS: In comparison to the placebo drink, the ingestion of the caffeinated energy drink increased the ball velocity in the standing spike (19.2 ± 2.1 vs 19.7 ± 1.9 m·s, P = 0.023) and in the jumping spike (17.9 ± 2.2 vs 18.8 ± 2.2 m·s, P = 0.038) and the jump height in the squat jump (28.1 ± 3.2 vs 29.4 ± 3.6 cm, P = 0.028), countermovement jump (32.0 ± 4.6 vs 33.1 ± 4.5 cm, P = 0.018), spike jump (43.3 ± 4.7 vs 44.4 ± 5.0 cm, P = 0.025), and block jump (35.2 ± 5.1 vs 36.1 ± 5.1 cm, P = 0.044). Furthermore, the caffeinated energy drink decreased the time needed to complete the agility t-test (11.1 ± 0.5 vs 10.9 ± 0.3 s, P = 0.036). During the game, the volleyball actions categorized as successful were more frequent with the caffeinated energy drink (34% ± 9% vs 45% ± 9%, P < 0.001), whereas imprecise actions decreased (28% ± 7% vs 14% ± 9%, P < 0.001) when compared with the placebo drink. CONCLUSION: Commercially available energy drinks can significantly improve physical performance in female volleyball players. Increased physical performance led to improved accuracy during an actual volleyball match. | es |
dc.language.iso | en | es |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | Caffeinated energy drinks improve volleyball performance in elite female players. | es |
dc.type | article | es |
dc.issue.number | 4 | es |
dc.journal.title | Medicine & Science in Sports & Exercise | es |
dc.page.initial | 850 | es |
dc.page.final | 856 | es |
dc.rights.accessRights | openAccess | es |
dc.subject.area | Ciencias de la Actividad Física y del Deporte | es |
dc.volume.number | 47 | es |
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