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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

From: Dose response effects of a caffeine-containing energy drink on muscle performance: a repeated measures design

  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 0.99