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Technical Details

  • Variable Type: Discrete Metric
  • Data Type: Float
  • Units: ratio (0–1)
  • Column Name: Varies by phase and jump type (see Events/Phases)
  • Measurement: Relative contribution of hip vs. knee motion during the specified phase

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Events / Phases

This metric can be reported at different events or phases depending on jump type:
  • Eccentric (jumping): From Initiation to Bottom.
    • Column examples:
      • eccentric_hip_knee_dominance (bilateral);
      • right_eccentric_hip_knee_dominance, left_eccentric_hip_knee_dominance (single-leg).
  • Concentric (jumping): From Bottom to Takeoff.
    • Column examples:
      • concentric_hip_knee_dominance (bilateral);
      • right_concentric_hip_knee_dominance, left_concentric_hip_knee_dominance (single-leg).
  • Landing: From Landing to Termination.
    • Column example:
      • landing_hip_knee_dominance

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Description

Hip knee dominance describes how much the athlete uses the hip versus the knee during a given phase. A value of 0 indicates hip-dominant strategy; 1 indicates knee-dominant. Single-leg jump types may report left/right-specific columns for eccentric and concentric phases; landing is often a single value. The phase (eccentric, concentric, or landing) determines which column name applies.

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Use Cases

  • Movement strategy and injury risk (e.g., knee-dominant loading)
  • Coaching and technique feedback
  • Bilateral or single-leg comparison across phases