General rotation sequence is X, Y, Z.
Exception: absolute angles relative to the lab (Pelvis Angle, Thorax-Lab Angle) use Z, Y, X (Baker, 2001, Gait and Posture 13).
Joint |
Segment/ Reference |
Negate? |
Joint |
Segment/ Reference |
Negate? | |
Left Shoulder Angles |
LAR/RTA |
X=FALSE Y=TRUE Z=TRUE |
Right Shoulder Angles | RAR/RTA |
X=FALSE Y=FALSE Z=FALSE |
|
Left Elbow Angles |
LFA/LAR |
X=FALSE Y=TRUE Z=TRUE |
Right Elbow Angles | RFA/RAR |
X=FALSE Y=FALSE Z=FALSE |
|
Left Thorax Angles |
RTA/RPV |
X=TRUE Y=FALSE Z=TRUE |
Right Thorax Angles | RTA/RPV |
X=TRUE Y=TRUE Z=FALSE |
|
Left Thorax Lab Angles* | RTA/Virtual Lab | X=TRUE Y=FALSE Z=TRUE | Right Thorax Lab Angles* | RTA/Virtual Lab | X=TRUE Y=TRUE Z=FALSE | |
Left Pelvic Angles |
RPV/Virtual Lab |
X=TRUE Y=FALSE Z=TRUE |
Right Pelvic Angles |
RPV/ Virtual Lab |
X=TRUE Y=TRUE Z=FALSE |
|
Left Hip Angles |
LTH/RPV |
X=FALSE Y=TRUE Z=TRUE |
Right Hip Angles | RTH/RPV |
X=FALSE Y=FALSE Z=FALSE |
|
Left Knee Angles |
LSK/LTH |
X=TRUE Y=TRUE Z=TRUE |
Right Knee Angles | RSK/RTH |
X=TRUE Y=FALSE Z=FALSE |
|
Left Ankle Angles |
LMF/LSK |
X=FALSE Y=TRUE Z=TRUE |
Right Ankle Angles | RMF/RSK |
X=FALSE Y=FALSE Z=FALSE |
|
Left Foot Progression |
LMF/ Virtual Lab |
X=FALSE Y=FALSE Z=TRUE |
Right Foot Progression |
RMF/ Virtual Lab |
X=FALSE Y=FALSE Z=FALSE |
*Uses Z,Y,X rotation sequence.
**If session option "normalise to static trial" is activated, the segment Left Foot Normalized is used instead of LMF.
Joint | Segment |
Resolution coordinate system |
Negate? | Joint | Segment |
Resolution coordinate system |
Negate? | |
Left Hip Moment | LTH | RPV |
X=TRUE Y=FALSE Z=FALSE |
Right Hip Moment | RTH | RPV |
X=TRUE Y=TRUE Z=TRUE |
|
Left Knee Moment | LSK | LTH |
X=FALSE Y=FALSE Z=FALSE |
Right Knee Moment | RSK | RTH |
X=FALSE Y=TRUE Z= |
|
Left Ankle Moment |
LFT |
LSK |
X=TRUE Y=FALSE Z=FALSE |
Right Ankle Moment |
RFT |
RSK |
X=TRUE Y=TRUE Z=TRUE |
|
Left Hip Power | LTH | RPV |
X=FALSE Y=FALSE Z=FALSE |
Right Hip Power | RTH | RPV |
X=FALSE Y=FALSE Z=FALSE |
|
Left Knee Power | LSK | LTH |
X=FALSE Y=FALSE Z=FALSE |
Right Knee Power | RSK | RTH |
X=FALSE Y=FALSE Z=FALSE |
|
Left Ankle Power | LFT | LSK |
X=FALSE Y=FALSE Z=FALSE |
Right Ankle Power | RFT | RSK |
X=FALSE Y=FALSE Z=FALSE |
|
Left GRF | LFT | Virtual Lab |
X=FALSE Y=FALSE Z=FALSE |
Right GRF | RFT | Virtual Lab |
X=TRUE Y=FALSE Z=FALSE |