Start Here: How to Read Your Data

The 3 layers

1. Context (what type of run was this?): speed, fatigue, surface, shoes
2. Signals (what the sensor measured): forces, timing, stability
3. Interpretation (what it may mean): patterns over multiple runs

How to compare runs

• Compare similar runs (easy vs easy, tempo vs tempo).
• Look for trends across runs.

What “good” looks like

There isn’t one universal target. Use:

• Your baseline (first 2–3 weeks)
• Your goals (speed, injury risk reduction, efficiency)
• Symmetry and stability trends

Red flags (consider follow-up)

• Large asymmetry that persists
• Sudden shifts after changing shoes/surface
• Worsening impact forces with fatigue