Main of the study is to assess the reliability of a new objective tool to measure lumbar spine motion. The data will be collected from healthy subjects and subjects with frequent or daily low back pain in the last three months. In addition we compare the results of the motion measurements with disability and pain questionnaires such as the Roland Morris, Oswestry Disability Index and the Brief Pain Inventory.

Inclusion Criteria:

• older than 18 years, informed consent, sufficient German skills <30 days low back pain in the last 90 days (control group) >31days of low back pain in the last 90 days (low back pain group)

Exclusion Criteria:

• neurological disorder (including multiple sclerosis, Stroke, Parkinson´s disease), Current pain >= 4 (NSR)/intake of analgesic in the last 24h/ previous low back surgery (control group), inability to perform choreography (LBP group)

Low back pain patients were recruited among in-and outpatients of the Department of Pain Medicine at the Bergmannsheil, Bochum. The subjects of the control groups were recruited by distributing flyers in sport groups and among hospital staff and friends.