Table 2 Description of kinematic outcome measures.
From: An examination of active inference in autistic adults using immersive virtual reality
Variable | General description | Operationalised definition |
|---|---|---|
Swing onset time | Moment when the racquet first started moving towards the ball | The first timeframe in which forward motion of the VR hand controller was detected (expressed relative to ball contact frame) |
Peak velocity of the hand | The highest speed that the hand reached when moving towards the ball | The maximum differential position of the VR hand controller shown between frames following swing onset (expressed in m/s) |
Time of peak hand velocity | The moment when the hand reached its highest speed | The time at which Peak Velocity of the Hand occurred, relative to ball contact frame |
Maximum hand displacement | The furthest distance that the hand deviated away from the body during the swing action | The maximum distance that occurred between the VR headset and hand controller in the transverse plane following swing onset (normalised by participant body height) |
Swing range of motion | The total arc travelled around the body by the hand during the swing action | The total angular deviation (°) of the hand controller from the VR headset that occurred in the transverse plane following swing onset |
