Technical Details
- Variable Type: Discrete Metric
- Data Type: Float
- Units: ratio
- Column Name:
trunk_to_arm_velocity_speedup - Aggregation: mean
- Precision: 2
- Calculation: Peak arm angular velocity / Peak trunk angular velocity
- Optimal Range: 1.2-1.8
- Optimal Direction: Higher is better
Description
Trunk to arm speed up measures the multiplication factor of velocity increase from the trunk to the arm, indicating the efficiency of power transfer through the kinetic chain.Normative Ranges
Percentile distributions by competition level from the 2026 Q1 dataset; the optimal range spans the 75th–90th percentiles.Use Cases
- Power transfer analysis
- Kinetic chain efficiency