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Comparison of absolute improvements in A) biceps brachii cross-sectional area B) 1 repetition maximum C) maximum voluntary contraction after 12 weeks of progressive periodized resistance training across second to fourth decade in nondominant arm of previously untrained individuals. †Greater than 20 to 29 and 30 to 39, p < 0.05. ‡Greater than 30 to 39, p < 0.05.
