RT info:eu-repo/semantics/article
T1 Effects of Caffeine Supplementation on Power Performance in a Flywheel Device: A Randomised, Double-Blind Cross-Over Study
A1 Castillo, Daniel
A1 Domínguez, Raul
A1 Rodríguez Fernández, Alejandro
A1 Raya González, Javier
A2 Educacion Fisica y Deportiva
K1 Educación Física
K1 Supplement
K1 Coffee
K1 Ergogenic Aid
K1 Exercise
K1 Resistance Exercise
K1 Resistance Training
K1 Sport
K1 Squat
K1 Strength
K1 2411.06 Fisiología del Ejercicio
AB [EN] Despite the demonstrated evidence of the importance of eccentric contractions in sportsperformance, no research has evaluated the ergogenic effects of caffeine on this type of contractionmeans during flywheel exercises. Therefore, the aims of the present study were to compare thepower outcomes, using different inertial loads, between caffeine and placebo conditions. Twenty-fouryoung, healthy, and active men (age: 22.5   4.8 years) took part in the study. A crossed, randomiseddouble-blind design was used to analyse the effects of caffeine on lower limb power outcomes duringa flywheel half-squat exercise. Participants completed four sets of eight all-out repetitions with afixed three-minutes rest interval, and each set was performed using different inertial loads (i.e., 0.025,0.050, 0.075 and 0.100 kg m􀀀2). Both the mean power (MP) and peak power (PP) in concentric (CON)and eccentric (ECC) movement phases at each inertial load were recorded after participants wereadministered either a caffeine supplement (6 mg kg􀀀1) or placebo (sucrose). Participants receivinga caffeine supplementation demonstrated improvements versus the placebo in total MP (MPtotal),as well as MP in CON phase (MPcon) and in ECC phase (MPecc) at each inertial load (22.68 to 26.53%;p < 0.01, effect size (ES) = 0.89–1.40). In addition, greater improvements with caffeine ingestionwere obtained with respect to the placebo condition (18.79 to 24.98%; p < 0.01, ES = 1.03–1.40) intotal PP (PPtotal), as well as PP in CON phase (PPcon) and in ECC phase (PPecc) at each inertial load.Thus, the supplementation of 6 mg kg􀀀1 caffeine may be considered to maximise on-field physicalperformance in those sports characterised by high demands of resistance.
PB MDPI
LK https://hdl.handle.net/10612/20094
UL https://hdl.handle.net/10612/20094
NO Castillo, D., Domínguez, R., Rodríguez-Fernández, A., & Raya-González, J. (2019). Effects of caffeine supplementation on power performance in a flywheel device: a randomised, double-blind cross-over study. Nutrients, 11(2). https://doi.org/10.3390/NU11020255
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 02-jun-2024