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Technical Details

  • Variable Type: Discrete Metric
  • Data Type: Float
  • Units: degrees
  • Column Name: Varies by phase and side; see Events/Phases
  • Measurement: Maximum knee flexion angle or maximum knee flexion velocity during the specified phase

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Events / Phases

  • At Takeoff: Maximum knee flexion during the jumping phase (Initiation to Takeoff). Column examples: jumping_left_knee_peak_flexion_angle, jumping_right_knee_peak_flexion_angle (bilateral); jumping_knee_peak_flexion_angle (single-leg).
  • At Landing: Maximum knee flexion during the landing absorption phase (Landing to Landing Bottom). Column examples: landing_left_knee_peak_flexion_angle, landing_right_knee_peak_flexion_angle (bilateral); landing_knee_peak_flexion_angle (single-leg).

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Description

Peak knee flexion can refer to the maximum knee flexion angle during takeoff or landing. It indicates loading depth and absorption; adequate landing flexion is associated with softer landings and lower injury risk. The side or phase determines which column name applies.

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Use Cases

  • Knee contribution and loading depth
  • Landing quality and stiff-knee-landing assessment
  • ACL and knee injury risk screening