Change of Direction Metrics
What each change of direction metric means and how the 1080 software calculates it.
A change of direction (CoD) run is a single run with one or more turns. This article describes the metrics the 1080 software calculates for the whole run and for each part of it. See CoD Training for how CoD exercises are set up.
Phases
A CoD run is made up of phases. Each phase is one straight leg of the run, from a start or turn to the next turn or the finish. For example, a 5-0-5 test has two phases: the run to the turn and the run back.
The software labels the first three phases as follows:
| Label | Phase |
|---|---|
| 1a | The first phase, from the start to the first turn |
| 1b | The second phase, after the first turn |
| 2a | The third phase, after the second turn |
Run metrics
These metrics describe the whole run.
| Metric | Short label | Unit | Calculation |
|---|---|---|---|
| Total Time | Tot Time | s | The sum of the times of all phases |
| Top Speed | Top Speed | m/s, km/h, or mph | The highest Top Speed of any phase |
| Total Distance | Tot Dist. | m or yd | The sum of the distances of all phases |
Phase metrics
These metrics are calculated for each of the phases 1a, 1b, and 2a. The label shows which phase the value belongs to, for example Top Speed (1a) or Max Accel. (1b).
| Metric | Unit | Calculation |
|---|---|---|
| Time | s | The time taken to complete the phase |
| Distance | m or yd | The distance covered during the phase |
| Top Speed | m/s, km/h, or mph | The highest value of the filtered speed curve during the phase |
| Max Acceleration | m/s² | The largest increase in filtered speed over a 0.5-second window during the phase |
| Max Deceleration | m/s² | The largest decrease in filtered speed over a 0.5-second window during the phase |
| Deceleration Time | s | The time from the phase's Top Speed until the athlete stops at the turn |
| Deceleration Distance | m or yd | The distance from the phase's Top Speed until the athlete stops at the turn |
The phase metrics use the same filtered speed curve and 0.5-second window as the linear sprint metrics. The whole run is filtered at once, so the curve stays continuous through each turn. As in a linear sprint, the deceleration metrics for a phase are 0 if the athlete does not come to a stop at the end of it.
If a run has fewer phases than a metric refers to, that metric is 0. Phases after the third are included in the run metrics but have no phase metrics of their own.
Targets and best values
For Total Time, phase Time, and Deceleration Time, a lower value is better. For all other CoD metrics, a higher value is better. This decides whether a result meets its target and which run counts as the best.