RESULTS	Muscle mass tended to increase ( 1.4 + / - 0.6 vs 0.3 + / - 0.8 kg ; P = .08 ) , and shoulder flexion ( 0.4 + / - 0.3 vs -0.5 + / - 0.3 kg ; P = .02 ) , elbow flexion ( 0.3 + / - 0.4 vs -0.7 + / - 0.4 kg ; P = .04 ) , knee extension ( 0.2 + / - 1.0 vs -1.7 + / - 1.3 kg ; P = .02 ) , and knee flexion ( 0.7 + / - 0.5 vs 0.3 + / - 0.7 kg ; P = .04 ) increased in the testosterone-treated compared with the placebo-treated subjects .\