In the half-squat, the ingestion of 3 mg/kg of caffeine moved the

In the half-squat, the ingestion of 3 mg/kg of Ruboxistaurin supplier caffeine moved the curve upwards in comparison to 0 mg/kg, and it significantly increased muscle power output at 30, 50, 60, 70, 80 and 100% 1RM (P < 0.05). In the bench-press action, 3 mg/kg of caffeine also moved the curve upwards and it significantly increased

power output at 30, 50, 60, 70, 80 and 100% 1RM (P < 0.05). Although the ingestion of 1 mg/kg tended to increase power at high loads (Figure 1), it did not reach statistical significance in the half-squat or bench press at any load. Figure 1 Power-load curves for half-squat and bench-press concentric GW786034 actions one hour after the ingestion of 1 and 3 mg/kg of caffeine using Lazertinib chemical structure a caffeinated energy drink or the same drink without caffeine (0 mg/kg). Data are mean ± SD for 12 participants. * 3 mg/kg different from 0 mg/kg (P < 0.05). † 3 mg/kg different from 1 mg/kg (P < 0.05). Force-velocity relationship Figure 2 illustrates the relationship

between force production and mean propulsive velocity attained at each repetition of the power-load tests. In comparison to 0 mg/kg, the ingestion of 3 mg/kg of caffeine moved the force-velocity curve upwards and rightwards in both the half-squat and bench press (P < 0.05). The equations of the best fit line generated with these data and the coefficient of determination R2 are presented in Table 2. All the R2 values for the best fit lines were higher than 0.98, which means a high correlation between the outcomes and their predicted values. Although the slopes of each best fit line were similar, the Y-axis intercept with the ingestion of 3 mg/kg of caffeine was considerably

increased in comparison to 0 mg/kg, since it was 2157 vs 1966 N in the half-squat and 649 vs 596 N in the bench-press for 3 mg/kg and 0 mg/kg, respectively. Since the Y-axis intercept is attained with a velocity equal to 0 m/s, these data indicate that 3 mg/kg of caffeine would also enhance isometric force production. Figure 2 The force-velocity relationship for half-squat and bench-press concentric actions one hour after the ingestion Arachidonate 15-lipoxygenase of 1 and 3 mg/kg of caffeine using a caffeinated energy drink or the same drink without caffeine (0 mg/kg). Data are mean ± SD for 12 participants. * 3 mg/kg different from 0 mg/kg (P < 0.05). † 3 mg/kg different from 1 mg/kg (P < 0.05). Table 2 Best fit line equations and coefficients of determination (R 2 ) for the force-velocity relationships in half-squat and bench press concentric actions one hour after the ingestion of 1 and 3 mg/kg of caffeine using a caffeinated energy drink or the same drink without caffeine (0 mg/kg). Data are mean ± SD for 12 participants   0 mg/kg 1 mg/kg 3 mg/kg Half-squat −380x + 1966 −439x + 2093 −430x + 2157 R2 0.98 0.99 0.99 Bench press −278x + 596 −275x + 600 −297x + 649 R2 0.99 0.99 0.

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