One of the studies, however, did not show any changes in mood after exercise training [14]. One randomized clinical trial (RCT) dealt with approximately 31 multiple sclerosis patients assigned to 3 different groups, such as treadmill training, yoga, or a control group. The treadmill and yoga groups were on an 8 week exercise regimen (24 sessions) and the control group followed a delayed exercise regimen. Depression, however, was not the primary outcome from this trial since it also tested for balance, speed, endurance, fatigue, depression and anxiety. Post interventions saw significant improvements in everything except the 10 m walk time decreased in the treadmill training group and there was no clear change in the yoga exercise group. The control group saw no change at all in this RCT