Exercise group did aerobic exercise during 6 weeks. Also this group took advice including lifestyle.

Control group only took advice including lifestyle.

Members of the exercise group received an exercise intervention twice a week for six weeks accompanied by a physiotherapist.

This self-report Likert-type scale was developed by LeBeau et al. in order to assess post-traumatic stress symptoms. The scale consists of nine questions and a single dimension. Each question is scored between 0 for "Not at all" and 4 for "Extremely". Total possible scores range between 0 and 36. The higher the total score, the higher the level of Post-traumatic Stress Disorder . The cut-off value of the scale was calculated as 24

The Pittsburgh Sleep Quality Index consists of 24 questions and seven categories that yield information about the type and severity of sleep disturbance experienced in the past month. The Pittsburgh Sleep Quality Index includes questions assessing sleep quality, transition time, duration, efficiency, disturbance, sleep medication use, and daytime dysfunction due to sleep problems. Each item is scored from 0 (no distress at all) to 3 (severe distress). Total possible scores range from 0 to 21. A higher score means poorer sleep quality. A total score of 0-5 is regarded as indicating healthy sleep, 6-10 as poor sleep, and above 10 as long-term sleep disturbance.