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Dynamic maximal strength (1RM) before (pre) and after (post) a 12-week training period with a collagen peptide (COL, gray blocks) or a placebo (PLA, white blocks) supplementation. SQ = squat; DL = deadlift; BP = bench press; BR = bent-over row. § = trend for an interaction effect (time × group: p = 0.054); * = significant main effect (time: p < 0.05). Values are means ± SD.
