In the session forms, the therapist will note down how much time of the therapy session will target problems at the different levels of the ICF. At the level of body structure and function, the time spent on muscle length and muscle strength will be registered. For muscle length, the therapists are asked to report the targeted muscles, the number of repetitions, the duration of stretch and treatment modality (activo, activopassivo or passivo). About muscle strength, therapists will note the specific muscle that was trained, the intensity (number of repetitions and resistance) and whether the exercise was performed as analytical (single-joint) or functional (multiple-joint) muscle work. Concerning activity level, the specific functional activity that was practiced and the averaged position in which this was performed, will be registered. Finally, the therapist will be asked to report whether any problems at participation level are specifically addressed.