Repetition Metrics
What each repetition metric means and how the 1080 software calculates it.
Repetition exercises are made up of reps. Each rep has a concentric phase, an eccentric phase, or both. This article describes the metrics the 1080 software calculates for each rep and for the set.
Every repetition metric is calculated separately for each phase. For example, you can see Peak Power for the concentric phase and for the eccentric phase of the same rep.
| Metric | Short label | Unit | Calculation |
|---|---|---|---|
| Power (Peak) | Peak Power | W | The highest power during the phase |
| Force (Peak) | Peak Force | N | The highest force during the phase |
| Speed (Peak) | Peak Speed | m/s | The highest speed during the phase |
| Power (Average) | Avg Power | W | The work done during the phase divided by its duration |
| Force (Average) | Avg Force | N | The average force over the duration of the phase |
| Speed (Average) | Avg Speed | m/s | The distance moved during the phase divided by its duration |
| Time under Tension | TuT | s | The duration of the phase |
| Range of Motion | RoM | m | The distance the cable moved during the phase |
How the values are calculated
The software calculates each value from the machine's samples for the phase:
- Peaks are the highest value of any single sample. Force, power, and speed are compared as absolute values, so the direction of movement does not matter.
- Average force is the force integrated over time, divided by the duration of the phase. This weights every moment of the phase equally, regardless of how often samples were taken.
- Average power is the work done (force integrated over distance) divided by the duration of the phase.
- Average speed is the distance moved divided by the duration of the phase.
Force and power include adjustments that make the values reflect the force applied by the athlete:
- For the original Sprint and Quantum, force includes a compensation for the internal friction of the machine.
- In Synchro Smith exercises, force includes the external load on the bar.
If you trim a rep, peaks and averages are calculated over the trimmed part only. Time under Tension and Range of Motion always cover the whole phase.
Synchro exercises
In Synchro and Synchro Smith exercises, two machines record each rep. The software combines the values from both machines:
- Force and power (peak and average) are added together, because both machines contribute to the total load the athlete moves.
- Speed, Time under Tension, and Range of Motion are averaged between the two machines.
Set values
A set contains several reps, so the software summarizes each metric for the set in two ways:
- Average — The mean value of all reps that have the phase.
- Best — The value from the best rep. For Time under Tension, the best rep is the one with the shortest time. For all other metrics, it is the rep with the highest value.
Reps without the selected phase are not included. For example, if only some reps recorded an eccentric phase, the eccentric average and best are calculated from those reps only.
Targets and best values
For Time under Tension, a lower value is better. For all other repetition metrics, a higher value is better. This decides whether a rep meets its target and which rep counts as the best.