====== Left/Right Step Down ======

**Left/Right Step Down - Timepoints**

Start/Initial Contact: 
  Definition: Initiation of movement downwards
	Calculation: Eccentric end – (0.2*number of frames)
	Units: Frame #

Eccentric End:
	Definition: End of the eccentric phase and start of the concentric phase.
  Calculation: Frame of max GRFz
	Units: Frame #

End:
	Definition: End of upward portion and the concentric phase of the movement.
	Calculation: Eccentric end + (0.2*number of frames)
	Units: Frame #

**Left/Right Step Down - Sub phase Metrics**

Phase Time: 
  Definition: Temporal duration of the selected phase. 
	Calculation: ∆phase time(s) 
	Units: Seconds (s)

Torso Flexion Angle:
  Definition: Segment angle of the torso at the end of the selected phase.  
	Calculation:
	Units: Degrees (°)

Torso Flexion Range of Motion:
  Definition: Torso Range of motion during the selected phase.  
  Calculation: Torso Flexion Angle (end of selected phase) – Torso Flexion Angle (start of selected phase)
	Units: Degrees (°)

Torso Side Bend Angle:
  Definition: Segment angle of the torso at the end of the selected phase.  
	Calculation:
	Units: Degrees (°)

Torso Side Bend Range of Motion:
  Definition: Torso Range of motion during the selected phase.  
  Calculation: Torso Side Bend Angle (end of selected phase) – Torso Side Bend Angle (start of selected phase)
	Units: Degrees (°)

Hip Flexion Angle L:
  Definition: Left hip joint flexion/extension angle at the end of the selected phase. 
	Calculation:
	Units: Degrees (°)

Hip Flexion Angle R:
  Definition: Right hip flexion/extension joint angle at the end of the selected phase. 
	Calculation:
	Units: Degrees (°)

Hip Flexion ROM L:
  Definition: Hip flexion range of motion during the selected phase.  
  Calculation: Hip Flexion Angle (end of selected phase) – Hip Flexion Angle (start of selected phase)
	Units: Degrees (°)

Hip Flexion ROM R:
  Definition: Hip flexion range of motion during the selected phase.  
  Calculation: Hip Flexion Angle (end of selected phase) – Hip Flexion Angle (start of selected phase)
	Units: Degrees (°)

Hip Add Angle L:
  Definition: Left hip joint adduction/abduction angle at the end of the selected phase. 
	Calculation:
	Units: Degrees (°)

Hip Add Angle R:
  Definition: Right hip joint adduction/abduction angle at the end of the selected phase. 
	Calculation:
	Units: Degrees (°)

Hip Add ROM L:
  Definition: Hip adduction range of motion during the selected phase.  
  Calculation: Hip Flexion Angle (end of selected phase) – Hip Flexion Angle (start of selected phase)
	Units: Degrees (°)

Hip Add ROM R:
  Definition: Hip adduction range of motion during the selected phase.  
  Calculation: Hip Adduction Angle (end of selected phase) – Hip Adduction Angle (start of selected phase)
	Units: Degrees (°)

Hip IR Angle L:
  Definition: Left hip joint internal/external rotation angle at the end of the selected phase. 
	Calculation:
	Units: Degrees (°)

Hip IR Angle R:
  Definition: Right hip joint internal/external rotation angle at the end of the selected phase. 
	Calculation:
	Units: Degrees (°)

Hip IR ROM L:
  Definition: Hip internal rotation range of motion during the selected phase.  
  Calculation: Hip internal rotation Angle (end of selected phase) – Hip internal rotation Angle (start of selected phase)
	Units: Degrees (°)

Hip IR ROM R:
  Definition: Hip internal rotation range of motion during the selected phase.  
  Calculation: Hip internal rotation Angle (end of selected phase) – Hip internal rotation Angle (start of selected phase)
	Units: Degrees (°)

Knee Flexion Angle L:
  Definition: Left knee joint flexion/extension angle at the end of the selected phase. 
	Calculation:
	Units: Degrees (°)

Knee Flexion Angle R:
  Definition: Right knee joint flexion/extension angle at the end of the selected phase. 
	Calculation:
	Units: Degrees (°)

Knee Flexion ROM L:
  Definition: Knee flexion range of motion during the selected phase.  
  Calculation: Knee flexion Angle (end of selected phase) – Knee flexion Angle (start of selected phase)
	Units: Degrees (°)

Knee Flexion ROM R:
  Definition: Knee flexion range of motion during the selected phase.  
  Calculation: Knee flexion Angle (end of selected phase) – Knee flexion Angle (start of selected phase)
	Units: Degrees (°)

Ankle Flexion Angle L:
  Definition: Left ankle joint flexion/extension angle at the end of the selected phase. 
	Calculation:
	Units: Degrees (°)

Ankle Flexion Angle R:
  Definition: Right ankle joint flexion/extension angle at the end of the selected phase.
	Calculation:
	Units: Degrees (°)

Ankle ROM L:
  Definition: Left ankle joint flexion/extension angle range of motion during the selected phase.  
  Calculation: Ankle Flexion/Extension Angle (end of selected phase) – Ankle Flexion/Extension Angle (start of selected phase)
	Units: Degrees (°)

Ankle ROM R:
  Definition: Right ankle joint flexion/extension angle range of motion during the selected phase.  
  Calculation: Ankle Flexion/Extension Angle (end of selected phase) – Ankle Flexion/Extension Angle (start of selected phase)
	Units: Degrees (°)