| Autor: |
Felipe Carvalho, Mauro Antônio Guerra unior, Adriano Fortes. Maia, Lucas Guimarães-Ferreira, Leonardo Carvalho Caldas |
| Jazyk: |
English<br />Portuguese |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Journal of Physical Education, Vol 35 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2448-2455 |
| DOI: |
10.4025/jphyseduc.v35i1.3501 |
| Popis: |
ABSTRACT The aim of this study was to investigate the effects of acute caffeine ingestion (5 mg.kg-1) on jump, isometric strength and repeated sprint performance in amateur American football athletes. Twelve players (24.6 ± 3.66 years and 115.18 ± 24.35 kg of body weight) ingested a dose of caffeine (5 mg.kg−1) or placebo 60 min prior to a testing session consisting of: 1) countermovement jump (CMJ); 2) isometric mid-tight pull (IMTP); and 3) 3-line drills (200-yd shuttle runs with a 2-minute rest between sprints). Two testing sessions were performed using a double-blind, counterbalanced, crossover design during a pre-season training camp. Results indicated: Caffeine ingestion improved CMJ performance (p = 0.035), but no differences were observed on IMTP strength (p = 0.22) and line drill performance (total time: p = 0.65, and fatigue (%): p = 0.75) when compared to placebo condition. Conclusion: Acute caffeine ingestion improved jump performance, but not isometric strength and repeated sprint with change-of-direction performance in amateur American Football athletes. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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