The computer-supported test and training system (CTT) for the spine joint motor function Strength for the back Many problems of the musculoskeletal system occur through tense muscles and a weak musculature. This leads to malposition and relieving posture, which deepen the problem. With CTT KOLOSSOS imbalances (even when hidden) and performance deficits of the back musculature and the spinal drives are identified precisely. On the basis of these results an individual, specific training of the thoracic and lumbar spine motor function can be created and thus muscular imbalances and deficits eradicated. Thereby the natural resilience of the spine is restored and improved.