Objectives: To quantify and compare the effects of six weeks of resistance (RET) and aerobic exercise training (AET) on signs and symptoms associated with GAD. Methods: Thirty sedentary women, aged 18-37 years, diagnosed by blinded clinicians with a primary DSM-IV diagnosis of GAD, who were not engaged in treatment other than pharmacotherapy, were randomized to six weeks of RET, AET, or wait list