In a German study published in 2005, 24 women who described themselves as "emotionally distressed" took two 90-minute yoga classes a week for three months. They were considered the experimental group. Women in a control group maintained their normal activities and were asked not to begin an exercise or stress-reduction program during the study period. They were all one standard deviation above the population norm in scores for perceived stress measured by the Cohen Perceived Stress Scale, anxiety measured using the Spielberger State-Trait Anxiety Inventory, and depression scored with the Profile of Mood States and the Center for Epidemiological Studies
In a German study published in 2005, 24 women who described themselves as "emotionally distressed" took two 90-minute yoga classes a week for three months. They were considered the experimental group. Women in a control group maintained their normal activities and were asked not to begin an exercise or stress-reduction program during the study period. They were all one standard deviation above the population norm in scores for perceived stress measured by the Cohen Perceived Stress Scale, anxiety measured using the Spielberger State-Trait Anxiety Inventory, and depression scored with the Profile of Mood States and the Center for Epidemiological Studies