Effects of caffeine, beetroot juice and its interaction consumption on exercise-related fatigue
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Archivos
Fecha
2021-12
Profesor/a Guía
Facultad/escuela
Idioma
en
Título de la revista
ISSN de la revista
Título del volumen
Editor
University of Zagreb - Faculty of Kinesiology
Nombre de Curso
Licencia CC
Atribution 4.0 International (CC BY 4.0)
Licencia CC
https://creativecommons.org/licenses/by/4.0/deed.es
Resumen
The aim of this study was to analyze the effect of different supplementation conditions on fatigue and
performance in flywheel half-squat tests in senior men. Sixteen active males (age: 22.8±4.9 years; body
mass index: 23.7±2.4 kgm-2) participated in the intervention during a 4-week period. Four experimental
conditions were established using a double-blind design: placebo, caffeine (CAF), beetroot juice (BRJ), and
combined BRJ+CAF. To assess the effect of supplementation, participants completed a countermovement
jump (CMJ) before (Pre), 30 s after (Post-30s) and 180 s after (Post-180 s) completing a flywheel half-squat
exercise protocol (four sets of eight all-out repetitions, with a 3-min inter-set rest, using different inertial
loads). Additionally, the mean power output during the flywheel half-squat protocol was recorded. A repeated
measures ANOVA showed greater mean power (~1000 W, p<.001) produced in flywheel exercise after the
CAF, BRJ and BRJ+CAF consumption compared to the placebo condition. After placebo, CAF and BRJ, CMJ
performance at Post-180 s was reduced compared to Pre (p=.003-.087, two-way ANOVA; ES=-0.39/-0.49),
although no significant performance reduction (p=.087) was noted after BRJ+CAF. In conclusion, compared
to placebo, CAF, BRJ, and BRJ+CAF allow greater total mean power in the flywheel half-squat power test,
although without effects on exercise-related fatigue. Additionally, BRJ+CAF improved recovery after a high
demanding power-production protocol.
Notas
Indexación: Scopus.
Palabras clave
Nutritional Ergogenic Aids, Athletic Performance, Plyometric Exercise, Muscle Fatigue, Resistance Training
Citación
Kinesiology, Volume 53, Issue 2, Pages 185 - 19231 December 2021
DOI
10.26582/K.53.2.1