left_right_shuffle [S3D Inc - Sports Science And Motion Capture Simplified]

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====== Left/ Right Shuffle ======

**Left/Right Shuffle - Timepoints**

Start/ Initial Contact: 
  Definition: First instant in time where the individual makes contact with the force plate and start of the braking phase.
	Calculation: GRFz > 20N
	Units: Frame #

Braking End:
	Definition: End of the braking phase and start of the concentric phase.
  Calculation: Frame of max knee flexion
	Units: Frame #

Takeoff:
	Definition: End of the concentric phase and start of the flight phase.
  Calculation: First frame GRFz < 30N 
	Units: Frame #

**Left/ Right Shuffle - KPI**

Ground Contact Time:
  Definition: Elapsed time between initial contact and takeoff
  Calculation: Timetakeoff(s) – Timeinitial contact(s) 
  Units: Seconds (s)

**Left/ Right Shuffle - Sub phase Metrics**

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

Avg Vel: 
  Definition: Average center of mass vertical velocity across selected phase. 
	Calculation: mean COMvelocity(m/s). 
	Units: Meters per second (m/s)

Peak Vel: 
  Definition: Peak negative center of mass vertical velocity within the selected phase. 
	Calculation: maximum COMvelocity (m/s).
	Units: Meters per second (m/s)

Avg Force:
  Definition: Average vertical force production during the selected phase. 
	Calculation: mean vertical GRFz (N)
	Units: Newtons (N)

Avg Force Rel:
  Definition: Average vertical force production during the selected phase normalized to participant’s body mass. 
	Calculation: mean vertical GRFz (N)/ body mass (kg)
	Units: Newtons per kilogram (N/kg)

Peak Force: 
  Definition: Peak vertical force production during the selected phase normalized to participant’s body mass. 
	Calculation: maximum GRFz (N) during the selected phase 
	Units: Newtons (N)

Peak Force Rel:
  Definition: Peak vertical force production during the selected phase normalized to participant’s body mass. 
	Calculation: maximum GRFz (N) during the selected phase / mass (kg)
	Units: Newtons per kilogram (N/kg)

Avg RFD: 
  Definition: Average rate of force development during the selected phase. 
  Calculation: mean GRFz(N)/ Time (s) across the selected phase
	Units: Newtons per second (N/s)

Avg RFD Rel:
  Definition: Average rate of force development during the selected phase normalized to participant’s body mass. 
  Calculation: mean GRFz(N)/ Time (s) across the selected phase / mass(kg) 
	Units: Newtons per second per kilogram (N/s/kg)

Peak RFD:
  Definition: Peak rate of force development during the selected phase. 
  Calculation: maximum GRFz(N)/ Time (s) across the selected phase 
	Units: Newtons per second (N/s)

Peak RFD Rel:
  Definition: Peak rate of force development during the selected phase normalized to body mass. 
  Calculation: maximum GRFz(N)/ Time (s) across the selected phase divided by mass(kg)
	Units: Newtons per second per kilogram (N/s/kg)

Avg Lateral Force:
  Definition: Average lateral force production during the selected phase. 
	Calculation: mean vertical GRFx (N)
	Units: Newtons (N)

Avg Lateral Force Rel:
  Definition: Average lateral force production during the selected phase normalized to participant’s body mass. 
	Calculation: mean GRFx (N)/ body mass (kg)
	Units: Newtons per kilogram (N/kg)

Peak Lateral Force: 
  Definition: Peak lateral force production during the selected phase normalized to participant’s body mass. 
	Calculation: maximum GRFx (N) during the selected phase 
	Units: Newtons (N)

Peak Lateral Force Rel:
  Definition: Peak lateral force production during the selected phase normalized to participant’s body mass. 
	Calculation: maximum GRFx (N) during the selected phase / mass (kg)
	Units: Newtons per kilogram (N/kg)

Avg Lateral RFD: 
  Definition: Average rate of lateral force development during the selected phase. 
  Calculation: mean GRFx(N)/ Time (s) across the selected phase
	Units: Newtons per second (N/s)

Avg Lateral RFD Rel:
  Definition: Average rate of lateral force development during the selected phase normalized to participant’s body mass. 
  Calculation: mean GRFx(N)/ Time (s) across the selected phase / mass(kg) 
	Units: Newtons per second per kilogram (N/s/kg)
Peak Lateral RFD:
  Definition: Peak rate of lateral force development during the selected phase. 
  Calculation: maximum GRFx(N)/ Time (s) across the selected phase 
	Units: Newtons per second (N/s)

Peak Lateral RFD Rel:
  Definition: Peak rate of lateral force development during the selected phase normalized to body mass. 
  Calculation: maximum GRFx(N)/ Time (s) across the selected phase divided by mass(kg)
	Units: Newtons per second per kilogram (N/s/kg)

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

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 (°)

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 (°)