squat_jump_metrics

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squat_jump_metrics [2024/03/07 15:46] – created ethansquat_jump_metrics [2024/03/07 15:56] (current) – ethan
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 ====== Squat Jump Metrics ====== ====== Squat Jump Metrics ======
  
-**Squat Jump- Timepoints**+**Squat Jump - Timepoints**
  
 Start:  Start: 
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  Calculation: GRFz > bodyweight (N) + 5SD  Calculation: GRFz > bodyweight (N) + 5SD
  Units: Frame #  Units: Frame #
 +
 Takeoff: Takeoff:
  Definition: End of the concentric phase and start of the flight phase.  Definition: End of the concentric phase and start of the flight phase.
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  Calculation: Minimum vertical COM Displacement following Ground Contact  Calculation: Minimum vertical COM Displacement following Ground Contact
  Units: Frame #  Units: Frame #
-Squat Jump- KPIs+ 
 +**Squat Jump - KPIs** 
 Bodyweight: Bodyweight:
-Definition: Average GRFz during weighting phase (i.e., when participant stands motionless on the force platform(s). Also referred to as system weight+  Definition: Average GRFz during weighting phase (i.e., when participant stands motionless on the force platform(s). Also referred to as system weight
  Calculation: mean(GRFz[0:500])  Calculation: mean(GRFz[0:500])
  Units: Newtons (N)  Units: Newtons (N)
 +
 Mass: Mass:
-Definition: Mass of the participant (system) in kilograms determined during the weighting phase. +  Definition: Mass of the participant (system) in kilograms determined during the weighting phase. 
  Calculation: Bodyweight (N) / -9.81 m/s2  Calculation: Bodyweight (N) / -9.81 m/s2
  Units: Kilograms (kg)  Units: Kilograms (kg)
  
 Jump Height: Jump Height:
-Definition: Measure of jumping performance. Center of mass displacement of the individual. Calculated based on impulse momentum.+  Definition: Measure of jumping performance. Center of mass displacement of the individual. Calculated based on impulse momentum.
  Calculation: Jump height = vtakeoff2(m/s) / 2*gravitational acceleration (m/s/s)  Calculation: Jump height = vtakeoff2(m/s) / 2*gravitational acceleration (m/s/s)
  Units: Meters (m), Inches (in)  Units: Meters (m), Inches (in)
 +
 MRSI: MRSI:
-Definition: Measure of explosive jumping performance. Ratio of Jump Height to Jump Time.+  Definition: Measure of explosive jumping performance. Ratio of Jump Height to Jump Time.
  Calculation: Jump Height/ Jump Time  Calculation: Jump Height/ Jump Time
  Units: Unitless  Units: Unitless
 +
 Concentric Net Impulse: Concentric Net Impulse:
-Definition: Impulse generated by the individual during the concentric phase independent of bodyweight+  Definition: Impulse generated by the individual during the concentric phase independent of bodyweight
  Calculation: ∫(Force (N) – Bodyweight(N)) * t(s)  Calculation: ∫(Force (N) – Bodyweight(N)) * t(s)
  Units: Newton · seconds (N·s)  Units: Newton · seconds (N·s)
 +
 Momentum: Momentum:
  Definition: Vertical center of mass momentum of the individual at takeoff  Definition: Vertical center of mass momentum of the individual at takeoff
  Calculation:  mass (kg) * velocitytakeoff (m/s)  Calculation:  mass (kg) * velocitytakeoff (m/s)
  Units: Kilogram · meters per second (kg·m/s)  Units: Kilogram · meters per second (kg·m/s)
 +
 Jump Time: Jump Time:
  Definition: Elapsed time between the start of the jump and takeoff   Definition: Elapsed time between the start of the jump and takeoff 
  Calculation: Timetakeoff(s) – Timestart(s)    Calculation: Timetakeoff(s) – Timestart(s)  
  Units: Seconds (s)  Units: Seconds (s)
 +
 Flight Time: Flight Time:
  Definition: Elapsed time between takeoff and ground contact following takeoff   Definition: Elapsed time between takeoff and ground contact following takeoff 
  Calculation: Timeground contact (s) – Timetakeoff(s)    Calculation: Timeground contact (s) – Timetakeoff(s)  
  Units: Seconds (s)  Units: Seconds (s)
-Squat Jump- Sub-Phase Metrics+ 
 +**Squat Jump - Sub-Phase Metrics** 
 Phase Time:  Phase Time: 
  Definition: Temporal duration of the selected phase.  Definition: Temporal duration of the selected phase.
  Calculation: ∆phase time(s)   Calculation: ∆phase time(s) 
  Units: Seconds (s)  Units: Seconds (s)
 +
 Avg Vel:  Avg Vel: 
  Definition: Average center of mass vertical velocity across selected phase.  Definition: Average center of mass vertical velocity across selected phase.
  Calculation: mean COMvelocity(m/s).   Calculation: mean COMvelocity(m/s). 
  Units: Meters per second (m/s)  Units: Meters per second (m/s)
 +
 Peak Vel:  Peak Vel: 
-Definition: Peak negative center of mass vertical velocity within the selected phase.+  Definition: Peak negative center of mass vertical velocity within the selected phase.
  Calculation: maximum COMvelocity (m/s).  Calculation: maximum COMvelocity (m/s).
  Units: Meters per second (m/s)  Units: Meters per second (m/s)
 +
 Avg Force: Avg Force:
  Definition: Average vertical force production during the selected phase.   Definition: Average vertical force production during the selected phase. 
  Calculation: mean vertical GRFz (N)  Calculation: mean vertical GRFz (N)
  Units: Newtons (N)  Units: Newtons (N)
 +
 Avg Force Rel: Avg Force Rel:
-Definition: Average vertical force production during the selected phase normalized to participant’s body mass.+  Definition: Average vertical force production during the selected phase normalized to participant’s body mass.
  Calculation: mean vertical GRFz (N)/ body mass (kg)  Calculation: mean vertical GRFz (N)/ body mass (kg)
  Units: Newtons per kilogram (N/kg)  Units: Newtons per kilogram (N/kg)
 +
 Peak Force:  Peak Force: 
-Definition: Peak vertical force production during the selected phase normalized to participant’s body mass.+  Definition: Peak vertical force production during the selected phase normalized to participant’s body mass.
  Calculation: maximum GRFz (N) during the selected phase   Calculation: maximum GRFz (N) during the selected phase 
  Units: Newtons (N)  Units: Newtons (N)
 +
 Peak Force Rel: Peak Force Rel:
-Definition: Peak vertical force production during the selected phase normalized to participant’s body mass.+  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)  Calculation: maximum GRFz (N) during the selected phase / mass (kg)
  Units: Newtons per kilogram (N/kg)  Units: Newtons per kilogram (N/kg)
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 Avg RFD:  Avg RFD: 
  Definition: Average rate of force development during the selected phase.  Definition: Average rate of force development during the selected phase.
-Calculation: mean GRFz(N)/ Time (s) across the selected phase+  Calculation: mean GRFz(N)/ Time (s) across the selected phase
  Units: Newtons per second (N/s)  Units: Newtons per second (N/s)
  
 Avg RFD Rel: Avg RFD Rel:
-Definition: Average rate of force development during the selected phase normalized to participant’s body mass. +  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) +  Calculation: mean GRFz(N)/ Time (s) across the selected phase / mass(kg) 
  Units: Newtons per second per kilogram (N/s/kg)  Units: Newtons per second per kilogram (N/s/kg)
 +
 Peak RFD: Peak RFD:
  Definition: Peak rate of force development during the selected phase.  Definition: Peak rate of force development during the selected phase.
-Calculation: maximum GRFz(N)/ Time (s) across the selected phase +  Calculation: maximum GRFz(N)/ Time (s) across the selected phase 
  Units: Newtons per second (N/s)  Units: Newtons per second (N/s)
 +
 Peak RFD Rel: Peak RFD Rel:
-Definition: Peak rate of force development during the selected phase normalized to body mass. +  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)+  Calculation: maximum GRFz(N)/ Time (s) across the selected phase divided by mass(kg)
  Units: Newtons per second per kilogram (N/s/kg)  Units: Newtons per second per kilogram (N/s/kg)
 +
 Peak Power:  Peak Power: 
-Definition: Peak power production during the selected phase. +  Definition: Peak power production during the selected phase. 
-Calculation: maximum GRFz(N) * COMvelocity (m/s)+  Calculation: maximum GRFz(N) * COMvelocity (m/s)
  Units: Watts (W)  Units: Watts (W)
 +
 Peak Power Rel: Peak Power Rel:
-Definition: Peak power production during the selected phase normalized to the participant’s body mass. +  Definition: Peak power production during the selected phase normalized to the participant’s body mass. 
-Calculation: maximum GRFz(N) * COMvelocity (m/s) across the selected phase / mass(kg)+  Calculation: maximum GRFz(N) * COMvelocity (m/s) across the selected phase / mass(kg)
  Units: Watts per kilogram (W/kg)  Units: Watts per kilogram (W/kg)
 +
 Avg Power: Avg Power:
  Definition: Average power production during the selected phase.  Definition: Average power production during the selected phase.
-Calculation: mean GRFz(N) * COMvelocity (m/s) across the selected phase  +  Calculation: mean GRFz(N) * COMvelocity (m/s) across the selected phase  
-Units: Watts (W)+  Units: Watts (W) 
 Avg Power Rel: Avg Power Rel:
-Definition: Average power production during the selected phase normalized to the participant’s body mass. +  Definition: Average power production during the selected phase normalized to the participant’s body mass. 
-Calculation: mean GRFz(N) * COMvelocity (m/s) across the selected phase /mass(kg)  +  Calculation: mean GRFz(N) * COMvelocity (m/s) across the selected phase /mass(kg)  
-Units: Watts per kilogram (W/kg)+  Units: Watts per kilogram (W/kg)
  
 Peak Work:  Peak Work: 
-Definition: Peak work production during the selected phase. +  Definition: Peak work production during the selected phase. 
-Calculation: maximum GRFz(N) * COMdisplacement (m) across the selected phase+  Calculation: maximum GRFz(N) * COMdisplacement (m) across the selected phase
  Units: Joules(J)  Units: Joules(J)
 +
 Peak Work Rel: Peak Work Rel:
-Definition: Peak power production during the selected phase normalized to the participant’s body mass. +  Definition: Peak power production during the selected phase normalized to the participant’s body mass. 
-Calculation: maximum GRFz(N) * COMdisplacement (m) across the selected phase / mass (kg)+  Calculation: maximum GRFz(N) * COMdisplacement (m) across the selected phase / mass (kg)
  Units: Joules per kilogram (J/kg)  Units: Joules per kilogram (J/kg)
 +
 Avg Work: Avg Work:
  Definition: Average power production during the selected phase.  Definition: Average power production during the selected phase.
-Calculation: mean GRFz(N) * COMdisplacement (m) across the selected +  Calculation: mean GRFz(N) * COMdisplacement (m) across the selected 
  Units: Joules (J)  Units: Joules (J)
 +
 Avg Work Rel: Avg Work Rel:
  Definition: Average power production during the selected phase.  Definition: Average power production during the selected phase.
-Calculation: mean GRFz(N) * COMdisplacement (m) across the selected phase / mass (kg)+  Calculation: mean GRFz(N) * COMdisplacement (m) across the selected phase / mass (kg)
  Units: Joules per kilogram(J/ kg)  Units: Joules per kilogram(J/ kg)
 +
 Torso Angle: Torso Angle:
  Definition: Segment angle of the torso at the end of the selected phase.   Definition: Segment angle of the torso at the end of the selected phase. 
Line 140: Line 167:
  Units: Degrees (°)  Units: Degrees (°)
 Hip Flexion Angle L: Hip Flexion Angle L:
-Definition: Left hip joint flexion/ extension angle at the end of the selected phase. +  Definition: Left hip joint flexion/ extension angle at the end of the selected phase. 
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Hip Flexion Angle R: Hip Flexion Angle R:
-Definition: Right hip flexion/ extension joint angle at the end of the selected phase.+  Definition: Right hip flexion/ extension joint angle at the end of the selected phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
- 
  
 Hip Add Angle L: Hip Add Angle L:
-Definition: Left hip joint adduction/abduction angle at the end of the selected phase.+  Definition: Left hip joint adduction/abduction angle at the end of the selected phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Hip Add Angle R: Hip Add Angle R:
-Definition: Right hip joint adduction/abduction angle at the end of the selected phase.+  Definition: Right hip joint adduction/abduction angle at the end of the selected phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Hip IR Angle L: Hip IR Angle L:
-Definition: Left hip joint internal/external rotation angle at the end of the selected phase.+  Definition: Left hip joint internal/external rotation angle at the end of the selected phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Hip IR Angle R: Hip IR Angle R:
-Definition: Right hip joint internal/external rotation angle at the end of the selected phase.+  Definition: Right hip joint internal/external rotation angle at the end of the selected phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Knee Flexion Angle L: Knee Flexion Angle L:
-Definition: Left knee joint flexion/ extension angle at the end of the selected phase.+  Definition: Left knee joint flexion/ extension angle at the end of the selected phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Knee Flexion Angle R: Knee Flexion Angle R:
-Definition: Right knee joint flexion/ extension angle at the end of the selected phase.+  Definition: Right knee joint flexion/ extension angle at the end of the selected phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Ankle Flexion Angle L: Ankle Flexion Angle L:
-Definition: Left ankle joint flexion/ extension angle at the end of the selected phase.+  Definition: Left ankle joint flexion/ extension angle at the end of the selected phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
  
 Ankle Flexion Angle R: Ankle Flexion Angle R:
-Definition: Right ankle joint flexion/ extension angle at the end of the selected phase.+  Definition: Right ankle joint flexion/ extension angle at the end of the selected phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
  
-Squat Jump- Concentric Metrics+**Squat Jump - Concentric Metrics** 
 Concentric Time:  Concentric Time: 
  Definition: Temporal duration of the concentric phase.  Definition: Temporal duration of the concentric phase.
  Calculation: Takeoff (s) – Braking End (s)   Calculation: Takeoff (s) – Braking End (s) 
  Units: Seconds (s)  Units: Seconds (s)
 +
 Concentric Avg Vel:  Concentric Avg Vel: 
  Definition: Average center of mass vertical velocity across the concentric phase.  Definition: Average center of mass vertical velocity across the concentric phase.
  Calculation: mean (com_velocity)[start:takeoff]  Calculation: mean (com_velocity)[start:takeoff]
  Units: Meters per second (m/s)  Units: Meters per second (m/s)
 +
 Concentric Peak Vel:  Concentric Peak Vel: 
-Definition: Peak negative center of mass vertical velocity within the concentric phase.+  Definition: Peak negative center of mass vertical velocity within the concentric phase.
  Calculation: max (com_velocity) [start:takeoff]  Calculation: max (com_velocity) [start:takeoff]
  Units: Meters per second (m/s)  Units: Meters per second (m/s)
 +
 Concentric Avg Force: Concentric Avg Force:
  Definition: Average vertical force production during the concentric phase.   Definition: Average vertical force production during the concentric phase. 
  Calculation: mean(Force(N))[start:takeoff]  Calculation: mean(Force(N))[start:takeoff]
  Units: Newtons (N)  Units: Newtons (N)
 +
 Concentric Avg Force Rel: Concentric Avg Force Rel:
-Definition: Average vertical force production during the concentric phase normalized to participant’s body mass.+  Definition: Average vertical force production during the concentric phase normalized to participant’s body mass.
  Calculation: mean(Force(N))[start:takeoff] / mass (kg)  Calculation: mean(Force(N))[start:takeoff] / mass (kg)
  Units: Newtons per kilogram (N/kg)  Units: Newtons per kilogram (N/kg)
 +
 Concentric Peak Force:  Concentric Peak Force: 
-Definition: Peak vertical force production during the concentric phase normalized to participant’s body mass.+  Definition: Peak vertical force production during the concentric phase normalized to participant’s body mass.
  Calculation: max(Force(N))[start:takeoff]   Calculation: max(Force(N))[start:takeoff] 
  Units: Newtons (N)  Units: Newtons (N)
 +
 Concentric Peak Force Rel: Concentric Peak Force Rel:
-Definition: Peak vertical force production during the concentric phase normalized to participant’s body mass.+  Definition: Peak vertical force production during the concentric phase normalized to participant’s body mass.
  Calculation: max(Force(N))[takeoff: braking_end] / mass (kg)  Calculation: max(Force(N))[takeoff: braking_end] / mass (kg)
  Units: Newtons per kilogram (N/kg)  Units: Newtons per kilogram (N/kg)
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 Concentric Avg RFD:  Concentric Avg RFD: 
  Definition: Average rate of force development during the concentric phase.  Definition: Average rate of force development during the concentric phase.
-Calculation: mean(Force(N)[start:takeoff] / Concentric Time (s)+  Calculation: mean(Force(N)[start:takeoff] / Concentric Time (s)
  Units: Newtons per second (N/s)  Units: Newtons per second (N/s)
  
 Concentric Avg RFD Rel: Concentric Avg RFD Rel:
-Definition: Average rate of force development during the concentric phase normalized to participant’s body mass. +  Definition: Average rate of force development during the concentric phase normalized to participant’s body mass. 
-Calculation: mean(Force(N)[takeoff: braking_end] / Concentric Time (s))/ mass (kg) +  Calculation: mean(Force(N)[takeoff: braking_end] / Concentric Time (s))/ mass (kg) 
  Units: Newtons per second per kilogram (N/s/kg)  Units: Newtons per second per kilogram (N/s/kg)
 +
 Concentric Peak RFD: Concentric Peak RFD:
  Definition: Peak rate of force development during the concentric phase.  Definition: Peak rate of force development during the concentric phase.
-Calculation: max(Force(N)[start:takeoff] / Concentric Time (s)+  Calculation: max(Force(N)[start:takeoff] / Concentric Time (s)
  Units: Newtons per second (N/s)  Units: Newtons per second (N/s)
- 
  
 Concentric Peak RFD Rel: Concentric Peak RFD Rel:
-Definition: Peak rate of force development during the concentric phase normalized to body mass. +  Definition: Peak rate of force development during the concentric phase normalized to body mass. 
-Calculation: max(Force(N)[start:takeoff] / Concentric Time (s) / mass(kg).+  Calculation: max(Force(N)[start:takeoff] / Concentric Time (s) / mass(kg).
  Units: Newtons per second per kilogram (N/s/kg)  Units: Newtons per second per kilogram (N/s/kg)
 +
 Concentric Peak Power:  Concentric Peak Power: 
-Definition: Peak power production during the concentric phase. +  Definition: Peak power production during the concentric phase. 
-Calculation: max(Force(N)[start:takeoff] * com_velocity(m/s)[start:takeoff]+  Calculation: max(Force(N)[start:takeoff] * com_velocity(m/s)[start:takeoff]
  Units: Watts (W)  Units: Watts (W)
 +
 Concentric Peak Power Rel: Concentric Peak Power Rel:
-Definition: Peak power production during the concentric phase normalized to the participant’s body mass. +  Definition: Peak power production during the concentric phase normalized to the participant’s body mass. 
-Calculation: max(Force(N)[start:takeoff] * com_velocity(m/s)[start:takeoff]) / mass(kg)+  Calculation: max(Force(N)[start:takeoff] * com_velocity(m/s)[start:takeoff]) / mass(kg)
  Units: Watts per kilogram (W/kg)  Units: Watts per kilogram (W/kg)
 +
 Concentric Avg Power: Concentric Avg Power:
  Definition: Average power production during the concentric phase.  Definition: Average power production during the concentric phase.
-Calculation: mean(Force(N)[start:takeoff] * com_velocity(m/s)[ start:takeoff])+  Calculation: mean(Force(N)[start:takeoff] * com_velocity(m/s)[ start:takeoff])
  Units: Watts (W)  Units: Watts (W)
 +
 Concentric Avg Power Rel: Concentric Avg Power Rel:
-Definition: Average power production during the concentric phase normalized to the participant’s body mass. +  Definition: Average power production during the concentric phase normalized to the participant’s body mass. 
-Calculation: mean(Force(N)[start:takeoff] * com_velocity(m/s)[[start:takeoff]) / mass(kg)+  Calculation: mean(Force(N)[start:takeoff] * com_velocity(m/s)[[start:takeoff]) / mass(kg)
  Units: Watts per kilogram (W/kg)  Units: Watts per kilogram (W/kg)
 +
 Concentric Peak Work:  Concentric Peak Work: 
-Definition: Peak work production during the concentric phase. +  Definition: Peak work production during the concentric phase. 
-Calculation: max(Force(N)[start:takeoff] * com_position(m)[[start:takeoff])+  Calculation: max(Force(N)[start:takeoff] * com_position(m)[[start:takeoff])
  Units: Joules(J)  Units: Joules(J)
 +
 Concentric Peak Work Rel: Concentric Peak Work Rel:
-Definition: Peak power production during the concentric phase normalized to the participant’s body mass. +  Definition: Peak power production during the concentric phase normalized to the participant’s body mass. 
-Calculation: max(Force(N)[start:takeoff] * com_position(m)[[start:takeoff]) /  mass(kg)+  Calculation: max(Force(N)[start:takeoff] * com_position(m)[[start:takeoff]) /  mass(kg)
  Units: Joules per kilogram (J/kg)  Units: Joules per kilogram (J/kg)
 +
 Concentric Avg Work: Concentric Avg Work:
  Definition: Average power production during the braking phase.  Definition: Average power production during the braking phase.
-Calculation: mean(Force(N)[start:takeoff] * com_position(m)[[start:takeoff])+  Calculation: mean(Force(N)[start:takeoff] * com_position(m)[[start:takeoff])
  Units: Joules (J)  Units: Joules (J)
 +
 Concentric Avg Work Rel: Concentric Avg Work Rel:
  Definition: Average power production during the concentric phase.  Definition: Average power production during the concentric phase.
-Calculation: mean(Force(N)[takeoff_end:braking_end] * com_position(m)[[start:takeoff]) / mass(kg)+  Calculation: mean(Force(N)[takeoff_end:braking_end] * com_position(m)[[start:takeoff]) / mass(kg)
  Units: Joules per kilogram(J/ kg)  Units: Joules per kilogram(J/ kg)
 +
 Concentric Torso Angle: Concentric Torso Angle:
  Definition: Segment angle of the torso at the end of the concentric phase.   Definition: Segment angle of the torso at the end of the concentric phase. 
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Concentric Hip Flexion Angle L: Concentric Hip Flexion Angle L:
-Definition: Left hip joint flexion/ extension angle at the end of the concentric phase. +  Definition: Left hip joint flexion/ extension angle at the end of the concentric phase. 
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Concentric Hip Flexion Angle R: Concentric Hip Flexion Angle R:
-Definition: Right hip flexion/ extension joint angle at the end of the concentric phase.+  Definition: Right hip flexion/ extension joint angle at the end of the concentric phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Concentric Hip Add Angle L: Concentric Hip Add Angle L:
-Definition: Left hip joint adduction/abduction angle at the end of the concentric phase.+  Definition: Left hip joint adduction/abduction angle at the end of the concentric phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Concentric Hip Add Angle R: Concentric Hip Add Angle R:
-Definition: Right hip joint adduction/abduction angle at the end of the concentric phase.+  Definition: Right hip joint adduction/abduction angle at the end of the concentric phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Concentric Hip IR Angle L: Concentric Hip IR Angle L:
-Definition: Left hip joint internal/external rotation angle at the end of the concentric phase.+  Definition: Left hip joint internal/external rotation angle at the end of the concentric phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Concentric Hip IR Angle R: Concentric Hip IR Angle R:
-Definition: Right hip joint internal/external rotation angle at the end of the concentric phase.+  Definition: Right hip joint internal/external rotation angle at the end of the concentric phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Concentric Knee Flexion Angle L: Concentric Knee Flexion Angle L:
-Definition: Left knee joint flexion/ extension angle at the end of the concentric phase.+  Definition: Left knee joint flexion/ extension angle at the end of the concentric phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Concentric Knee Flexion Angle R: Concentric Knee Flexion Angle R:
-Definition: Right knee joint flexion/ extension angle at the end of the concentric phase.+  Definition: Right knee joint flexion/ extension angle at the end of the concentric phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Concentric Ankle Flexion Angle L: Concentric Ankle Flexion Angle L:
-Definition: Left ankle joint flexion/ extension angle at the end of the concentric phase.+  Definition: Left ankle joint flexion/ extension angle at the end of the concentric phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Concentric Ankle Flexion Angle R: Concentric Ankle Flexion Angle R:
-Definition: Right ankle joint flexion/ extension angle at the end of the concentric phase.+  Definition: Right ankle joint flexion/ extension angle at the end of the concentric phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
-Squat Jump- Landing Metrics+ 
 +**Squat Jump - Landing Metrics** 
 Landing Time:  Landing Time: 
  Definition: Temporal duration of the landing phase.  Definition: Temporal duration of the landing phase.
  Calculation: Landing End (s) – Ground Contact (s)   Calculation: Landing End (s) – Ground Contact (s) 
  Units: Seconds (s)  Units: Seconds (s)
 +
 Landing Avg Vel:  Landing Avg Vel: 
  Definition: Average center of mass vertical velocity across the landing phase.  Definition: Average center of mass vertical velocity across the landing phase.
  Calculation: mean (com_velocity)[landing_end:ground_contact]  Calculation: mean (com_velocity)[landing_end:ground_contact]
  Units: Meters per second (m/s)  Units: Meters per second (m/s)
 +
 Landing Peak Vel:  Landing Peak Vel: 
-Definition: Peak negative center of mass vertical velocity within the landing phase.+  Definition: Peak negative center of mass vertical velocity within the landing phase.
  Calculation: min (com_velocity) [landing_end:ground_contact]  Calculation: min (com_velocity) [landing_end:ground_contact]
  Units: Meters per second (m/s)  Units: Meters per second (m/s)
 +
 Landing Avg Force: Landing Avg Force:
  Definition: Average vertical force production during the landing phase.   Definition: Average vertical force production during the landing phase. 
  Calculation: mean(Force(N))[ landing_end:ground_contact]  Calculation: mean(Force(N))[ landing_end:ground_contact]
  Units: Newtons (N)  Units: Newtons (N)
 +
 Landing Avg Force Rel: Landing Avg Force Rel:
-Definition: Average vertical force production during the landing phase normalized to participant’s body mass.+  Definition: Average vertical force production during the landing phase normalized to participant’s body mass.
  Calculation: mean(Force(N))[ landing_end:ground_contact] / mass (kg)  Calculation: mean(Force(N))[ landing_end:ground_contact] / mass (kg)
  Units: Newtons per kilogram (N/kg)  Units: Newtons per kilogram (N/kg)
 +
 Landing Peak Force:  Landing Peak Force: 
-Definition: Peak vertical force production during the landing phase normalized to participant’s body mass.+  Definition: Peak vertical force production during the landing phase normalized to participant’s body mass.
  Calculation: max(Force(N))[landing_end:ground_contact]   Calculation: max(Force(N))[landing_end:ground_contact] 
  Units: Newtons (N)  Units: Newtons (N)
 +
 Landing Peak Force Rel: Landing Peak Force Rel:
-Definition: Peak vertical force production during the landing phase normalized to participant’s body mass.+  Definition: Peak vertical force production during the landing phase normalized to participant’s body mass.
  Calculation: max(Force(N))[ landing_end:ground_contact] / mass (kg)  Calculation: max(Force(N))[ landing_end:ground_contact] / mass (kg)
  Units: Newtons per kilogram (N/kg)  Units: Newtons per kilogram (N/kg)
Line 340: Line 407:
 Landing Avg RFD:  Landing Avg RFD: 
  Definition: Average rate of force development during the landing phase.  Definition: Average rate of force development during the landing phase.
-Calculation: mean(Force(N)[ landing_end:ground_contact] / Concentric Time (s)+  Calculation: mean(Force(N)[ landing_end:ground_contact] / Concentric Time (s)
  Units: Newtons per second (N/s)  Units: Newtons per second (N/s)
  
 Landing Avg RFD Rel: Landing Avg RFD Rel:
-Definition: Average rate of force development during the landing phase normalized to participant’s body mass. +  Definition: Average rate of force development during the landing phase normalized to participant’s body mass. 
-Calculation: mean(Force(N)[ landing_end:ground_contact] / Concentric Time (s))/ mass (kg) +  Calculation: mean(Force(N)[ landing_end:ground_contact] / Concentric Time (s))/ mass (kg) 
  Units: Newtons per second per kilogram (N/s/kg)  Units: Newtons per second per kilogram (N/s/kg)
 +
 Landing Peak RFD: Landing Peak RFD:
  Definition: Peak rate of force development during the landing phase.  Definition: Peak rate of force development during the landing phase.
-Calculation: max(Force(N)[ landing_end:ground_contact] / Concentric Time (s)+  Calculation: max(Force(N)[ landing_end:ground_contact] / Concentric Time (s)
  Units: Newtons per second (N/s)  Units: Newtons per second (N/s)
 +
 Landing Peak RFD Rel: Landing Peak RFD Rel:
-Definition: Peak rate of force development during the landing phase normalized to body mass. +  Definition: Peak rate of force development during the landing phase normalized to body mass. 
-Calculation: max(Force(N)[ landing_end:ground_contact] / Concentric Time (s) / mass(kg).+  Calculation: max(Force(N)[ landing_end:ground_contact] / Concentric Time (s) / mass(kg).
  Units: Newtons per second per kilogram (N/s/kg)  Units: Newtons per second per kilogram (N/s/kg)
 +
 Landing Peak Power:  Landing Peak Power: 
-Definition: Peak power production during the landing phase. +  Definition: Peak power production during the landing phase. 
-Calculation: max(Force(N)[ landing_end:ground_contact] * com_velocity(m/s)[ landing_end:ground_contact]+  Calculation: max(Force(N)[ landing_end:ground_contact] * com_velocity(m/s)[ landing_end:ground_contact]
  Units: Watts (W)  Units: Watts (W)
 +
 Landing Peak Power Rel: Landing Peak Power Rel:
-Definition: Peak power production during the landing phase normalized to the participant’s body mass. +  Definition: Peak power production during the landing phase normalized to the participant’s body mass. 
-Calculation: max(Force(N)[ landing_end:ground_contact] * com_velocity(m/s)[landing_end:ground_contact]) / mass(kg)+  Calculation: max(Force(N)[ landing_end:ground_contact] * com_velocity(m/s)[landing_end:ground_contact]) / mass(kg)
  Units: Watts per kilogram (W/kg)  Units: Watts per kilogram (W/kg)
 +
 Landing Avg Power: Landing Avg Power:
  Definition: Average power production during the landing phase.  Definition: Average power production during the landing phase.
-Calculation: mean(Force(N)[ landing_end:ground_contact] * com_velocity(m/s)[landing_end:ground_contact+  Calculation: mean(Force(N)[ landing_end:ground_contact] * com_velocity(m/s)[landing_end:ground_contact
  Units: Watts (W)  Units: Watts (W)
 +
 Landing Avg Power Rel: Landing Avg Power Rel:
-Definition: Average power production during the landing phase normalized to the participant’s body mass. +  Definition: Average power production during the landing phase normalized to the participant’s body mass. 
-Calculation: mean(Force(N)[ landing_end:ground_contact] * com_velocity(m/s)[landing_end:ground_contact]) / mass(kg)+  Calculation: mean(Force(N)[ landing_end:ground_contact] * com_velocity(m/s)[landing_end:ground_contact]) / mass(kg)
  Units: Watts per kilogram (W/kg)  Units: Watts per kilogram (W/kg)
 +
 Landing Peak Work:  Landing Peak Work: 
-Definition: Peak work production during the landing phase. +  Definition: Peak work production during the landing phase. 
-Calculation: max(Force(N)[ landing_end:ground_contact] * com_position(m)[ landing_end:ground_contact])+  Calculation: max(Force(N)[ landing_end:ground_contact] * com_position(m)[ landing_end:ground_contact])
  Units: Joules(J)  Units: Joules(J)
 +
 Landing Peak Work Rel: Landing Peak Work Rel:
-Definition: Peak power production during the landing phase normalized to the participant’s body mass. +  Definition: Peak power production during the landing phase normalized to the participant’s body mass. 
-Calculation: max(Force(N)[ landing_end:ground_contact] * com_position(m)[ landing_end:ground_contact]) /  mass(kg)+  Calculation: max(Force(N)[ landing_end:ground_contact] * com_position(m)[ landing_end:ground_contact]) /  mass(kg)
  Units: Joules per kilogram (J/kg)  Units: Joules per kilogram (J/kg)
 +
 Landing Avg Work: Landing Avg Work:
  Definition: Average power production during the landing phase.  Definition: Average power production during the landing phase.
-Calculation: mean(Force(N)[ landing_end:ground_contact] * com_position(m)[landing_end:ground_contact])+  Calculation: mean(Force(N)[ landing_end:ground_contact] * com_position(m)[landing_end:ground_contact])
  Units: Joules (J)  Units: Joules (J)
 +
 Landing Avg Work Rel: Landing Avg Work Rel:
  Definition: Average power production during the landing phase.  Definition: Average power production during the landing phase.
-Calculation: mean(Force(N)[ landing_end:ground_contact] * com_position(m)[ landing_end:ground_contact]) / mass(kg)+  Calculation: mean(Force(N)[ landing_end:ground_contact] * com_position(m)[ landing_end:ground_contact]) / mass(kg)
  Units: Joules per kilogram(J/ kg)  Units: Joules per kilogram(J/ kg)
 +
 Landing Torso Angle: Landing Torso Angle:
  Definition: Segment angle of the torso at the end of the landing phase.   Definition: Segment angle of the torso at the end of the landing phase. 
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Landing Hip Flexion Angle L: Landing Hip Flexion Angle L:
-Definition: Left hip joint flexion/ extension angle at the end of the landing phase. +  Definition: Left hip joint flexion/ extension angle at the end of the landing phase. 
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Landing Hip Flexion Angle R: Landing Hip Flexion Angle R:
-Definition: Right hip flexion/ extension joint angle at the end of the landing phase.+  Definition: Right hip flexion/ extension joint angle at the end of the landing phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Landing Hip Add Angle L: Landing Hip Add Angle L:
-Definition: Left hip joint adduction/abduction angle at the end of the landing phase.+  Definition: Left hip joint adduction/abduction angle at the end of the landing phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Landing Hip Add Angle R: Landing Hip Add Angle R:
-Definition: Right hip joint adduction/abduction angle at the end of the landing phase.+  Definition: Right hip joint adduction/abduction angle at the end of the landing phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
- 
  
 Landing Hip IR Angle L: Landing Hip IR Angle L:
-Definition: Left hip joint internal/external rotation angle at the end of the landing phase.+  Definition: Left hip joint internal/external rotation angle at the end of the landing phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Landing Hip IR Angle R: Landing Hip IR Angle R:
-Definition: Right hip joint internal/external rotation angle at the end of the landing phase.+  Definition: Right hip joint internal/external rotation angle at the end of the landing phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Landing Knee Flexion Angle L: Landing Knee Flexion Angle L:
-Definition: Left knee joint flexion/ extension angle at the end of the landing phase.+  Definition: Left knee joint flexion/ extension angle at the end of the landing phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Landing Knee Flexion Angle R: Landing Knee Flexion Angle R:
-Definition: Right knee joint flexion/ extension angle at the end of the landing phase.+  Definition: Right knee joint flexion/ extension angle at the end of the landing phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
 +
 Landing Ankle Flexion Angle L: Landing Ankle Flexion Angle L:
-Definition: Left ankle joint flexion/ extension angle at the end of the landing phase.+  Definition: Left ankle joint flexion/ extension angle at the end of the landing phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
  
 Landing Ankle Flexion Angle R: Landing Ankle Flexion Angle R:
-Definition: Right ankle joint flexion/ extension angle at the end of the landing phase.+  Definition: Right ankle joint flexion/ extension angle at the end of the landing phase.
  Calculation:  Calculation:
  Units: Degrees (°)  Units: Degrees (°)
  
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  • Last modified: 20 months ago
  • by ethan