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Subgroup analyses for creatine supplementation and resistance training compared with a placebo and resistance training on lower-body strength. MD, mean difference(kg); P1, p-value for the within-subgroup comparison (i.e., pre–post-intervention changes within each subgroup); P2, p-value for the between-subgroup comparison (i.e., comparison of the pre–post intervention changes between subgroups); NA, Not Available.
