Caffeine does not augment markers of muscle damage or leukocytosis following resistance exercise.

Purpose: The purpose of this study was to evaluate the effects of caffeine ingestion before a resistance exercise session on markers of muscle damage (CK, LDH, ALT, AST) and leukocyte levels.

Methods: Fifteen soccer athletes completed two resistance exercise sessions that differed only in the ingestion of caffeine or a placebo preworkout.

Results: CK concentration increased significantly following the caffeine session (415.