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- W2126129152 abstract "Background. The purpose of our study was to assess the early effects of a potent anabolic androgen on muscle mass and strength, lower extremity power, and functional performance in older men. Methods. Thirty-two men 72 ± 6 years of age were randomized to receive oxandrolone (10 mg twice daily) or matching placebo in a 2:1 manner for 12 weeks. Total and appendicular lean body mass (LBM) were assessed by dual-energy x-ray absorptiometry (DEXA). Lower extremity muscle volume was determined by magnetic resonance imaging to validate DEXA changes. Results. Total LBM increased by 2.7 ± 1.6 kg after 6 weeks with oxandrolone (p <.001), which was greater (p <.001) than the decline in LBM (−0.5 ± 0.9 kg) with placebo. Appendicular LBM increased by 1.2 ± 0.9 kg after just 6 weeks with oxandrolone (p <.001), which was greater (p <.001) than the decline in LBM (−0.4 ± 0.5 kg) with placebo. These changes were >90% of the gains in total and appendicular LBM (3.0 ± 1.5 kg and 1.3 ± 0.9 kg, respectively) after 12 weeks. Total thigh and hamstring muscle volume increased by 111 ± 29 mm3 (p =.001) and 75 ± 18 mm3 (p =.001), respectively, after 12 weeks. Maximal strength increased for the leg press 6.3 ± 5.6% (p =.003), leg curl 6.7 ± 8.6% (p =.01), chest press 6.9 ± 6.5% (p =.001), and latissimus pull-down 4.8 ± 6.3% (p =.009) with oxandrolone after 6 weeks; these increases were different than those with placebo (p <.001) and were 93%, 96%, 74%, and 94% of the respective gains at week 12. There were no improvements in functional measures. Conclusion. Treatment with a potent anabolic androgen may produce significant increases in muscle mass and strength after only 6 weeks in healthy older men. However, such treatment did not improve leg muscle power or walking speed." @default.
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- W2126129152 date "2005-12-01" @default.
- W2126129152 modified "2023-10-10" @default.
- W2126129152 title "Six-Week Improvements in Muscle Mass and Strength During Androgen Therapy in Older Men" @default.
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- W2126129152 doi "https://doi.org/10.1093/gerona/60.12.1586" @default.
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