Spatio-temporal parameters
Distance travelled: estimated distance travelled during the recorded session.
Sessionduration : duration of the race performed.
Vitality: estimate of the average running speed during the session.
Cadence: number ofsteps taken per minute. For running, the ideal cadence would be close to 180 steps/min according to the literature.
Stride and stepduration : duration of a complete stride in seconds (from the impact of the right foot on the ground to the next impact of the same foot).
Step duration: duration of the right and left steps as a percentage of the stride duration (stride duration is equal to the sum of the right and left step duration).
Stride and steplength : estimation of the length of a complete stride in metres (from the impact of the right foot on the ground to the next impact of the same foot).
Step length: Estimation of the length of the right and left steps as a percentage of the stride length (stride length is equal to the sum of the right and left step length).
Kinetic parameters
Impact forces: Estimation of the right and left ground impact forces. These forces are calculated from the tibial acceleration at impact, so their absolute value is not representative of the actual impact. However, the impact di#erence between the right and left sides is representative as well as the evolution of the value between sessions (patient follow-up).
Damping (= Vertical Loading Rate, VLR): derived from the tibial acceleration at impact. These values represent the rate at which forces are applied to the ground during impact. The VLR has been consistently linked to injuries in the literature, as with impact forces their absolute value is not representative of the actual impact. However, the difference between the right and left sides is representative as well as the evolution of the value between sessions (patient follow-up).
Angular magnitudes
Anatomical planes: Anatomical planes allow the 3D movements of the body to be translated into 2D movements for each joint:
- the coronal or frontal plane corresponds to the view from the front or back and allows for the characterization of lateral movements (e.g., chassed steps),
- the sagittal plane corresponds to the side view and allows to characterize the forward or backward movements (for example in running, the major part of the movement is done in the sagittal plane),
- the transverse plane corresponds to the top view and allows to characterize the movements around the vertical axis (for example, to do not of the head).
In the mySmartMove assessment, joint movements are broken down into these three anatomical planes.