References
Study design and supplementation protocol.The line shot attack test instrument [Scoring based on AAHPER serve test [Mean and standard deviation (SD) of agility, Sargent’s jump, and attacking and serving skill for each condition. PLA: placebo, C3: 3 mg/kg BW of caffeine, C6: 6 mg/kg BW of caffeine, *: significant difference compared with placebo (Mean and standard deviation (SD) of hand movement skill, medicine ball throwing, left handgrip, and right handgrip for each condition. PLA: placebo, C3: 3 mg/kg BW of caffeine, C6: 6 mg/kg BW of caffeine.The demographic and characteristics of participants.Mean and standard deviation (SD) of the tests results for each condition.PLA: Placebo, C3: 3 mg/kg of body weight of caffeine, C6: 6 mg/kg of body weight of caffeine, *: N: Newton.