The aim of a Back to Sports Screening is to identify the risk of injury or re-injury on an individual basis through the application of biomechanical measures as kinematics and kinetics. The screening is able to do this by assessing the body’s ability to counterbalance joint moments during complex movements. If joints appear unstable and the assessment deems the body to be incapable of this, then this supports practitioners in making recommendations to patients about what course of action should be taken to improve stability sufficiently for a return to sport. These recommendations should be designed specifically around the cause of the problem; whether it be muscle weakness or faulty movement strategy. The exact cause can however be difficult to identify with the naked eye and this is why the screening process supported by technology plays such an important role. For athletes who participate in sports where the body is placed under great strain, i.e. sports that require quick changes in direction or where joints undergo large accelerative forces, the test is particularly key; a misjudgement in diagnosis for these athletes is much more likely to result in problems. In addition to this function, the screening is also ideal for the identification of chronic and reoccurring injuries.

Simi Motion 2D with force vector and EMG feedback is characterised by its ability to provide instant data for diagnostic and training, showing both ground reaction force with magnitude, point of origin and direction as EMG data in unison. As a result, diagnostic based on these data is possible and the patient receives biofeedback at a level which they themselves will be able to understand. All data can be viewed, analysed and stored with the relative video recording and kinematic data.


Simple to use: Live feedback is perfect for enhancing diagnostic possibilities and therapy.


Information about resultant ground reaction forces and the direction in which they act is of great importance in clinical analysis. Through knowing these values, it is possible to calculate the moments which act upon the joint and therefore determine what level of muscle activation is required. The vector is also able to show which forces and levers act upon the joint. As a result, it is possible to establish which movements and strains the joint should be able to withstand, but also those which cannot viably be sustained in the long term.


With the use of force plates and EMG measurements, both ground reaction forces and muscle activation data can be included in the analysis and therapy process. The data is directly synchronised with cameras as the measurement takes place, allowing direct biofeedback during training.


Ground reaction forces can be viewed in real time in the form of a force vector  with direction, point of origin and magnitude which allows information about resultant moments and their levers. It is therefore possible to infer values for the work done by muscles, and the forces travelling through the joint. This information can be measured and evaluated with kinematic and EMG data simultaneously using Simi Motion as well as high speed videos.


Back to Sport Screening

The following tests can be part of a 'Back to Sports Screening':

  • Step down
  • Drop jump
  • Triple hop
  • Side cut step
  • Lateral shuffle

Every movement is examined in sagital and frontal planes to review information on movement strategy and joint forces.


Aktysis offers an immediate indication of joint angles or other parameter on the video live-stream allowing quick feedback to patients. Instantaneous results are a significant feature of this software as Aktisys delivers real-time results. It is both easy to operate and affordable.


Aktisys enables the parameters used in Back to Sport Screenings to be captured quantitatively in a kinematic fashion. Movements are observed in two dimensions; in the sagital plane, hip angle, knee angle, angle at the ankle, knee strategy and the upper-body are examined, and in the frontal plane, the pelvis, knee and upper-body. The software automatically analyses the relevant joint angles and displays them for the assessment of force and movement strategiesReference values for each parameter in question have been scientifically validated and are to be an integral part of protocol in years to come. It is also possible to analyse dynamic movements using an FMS (Functional Movement Screen).

Product Information

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