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Caffeine evidence, 2018

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Grgic J, Trexler ET, Lazinica B, Pedisic Z, Journal of the International Society of Sports Nutrition, 2018 — meta-analysis of caffeine on strength and power

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Grade
Design
meta analysis
Year
2018
Participants
149
Ingredient
Caffeine
Goal
Strength & muscle

Effect

Pooled RCTs showed small improvements in maximal strength and muscle power with acute caffeine, clearer for upper-body lifts.

Limitations and notes

Effect sizes are small — meaningful for training quality, not transformative.

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