Document Classification

Section Type: RESULTS

Text: Cross-sectional muscle area increased in response to training compared with nontraining (change in arm muscle mass, 499 + / - 349 mm2 vs. 206 + / - 264 mm2 [P = 0. 004] ; change in leg muscle mass, 1106 + / - 854 mm2 vs. 523 + / - 872 mm2 [P = 0. 045]) and in response to testosterone therapy compared with placebo (change in arm muscle mass, 512 + / - 371 mm2 vs. 194 + / - 215 mm2 [P < 0. 001] ; change in leg muscle mass, 1, 236 + / - 881 mm2 vs. 399 + / - 729 mm2 [P = 0. 002]).