Table 2.
Test-retest reliability data for six devices in the back squat and power clean.
| Load (%) | Back Squat | Power Clean | ||||||
|---|---|---|---|---|---|---|---|---|
| TE (m·s−1) | CV (%) | TE (m·s−1) | CV (%) | |||||
| MV | PV | MV | PV | MV | PV | MV | PV | |
| Gymaware | ||||||||
| 40 | 0.04 | 0.08 | 4.5 | 5.6 | 0.05 | 0.09 | 3.6 | 3.7 |
| 50 | 0.03 | 0.07 | 3.4 | 4.9 | 0.03 | 0.08 | 2.2 | 3.7 |
| 60 | 0.02 | 0.08 | 2.9 | 6.0 | 0.03 | 0.07 | 2.4 | 3.1 |
| 70 | 0.03 | 0.10 | 4.5 | 8.3 | 0.04 | 0.05 | 3.2 | 2.5 |
| 80 | 0.04 | 0.09 | 7.0 | 8.6 | 0.04 | 0.08 | 3.3 | 3.8 |
| 90 | 0.04 | 0.09 | 9.5 | 12.6 | 0.08 | 0.07 | 8.9 | 3.9 |
| 100 | 0.03 | 0.15 | 13.6 | 22.0 | 0.04 | 0.06 | 4.3 | 4.0 |
| Full | 0.04 | 0.10 | 9.8 | 11.3 | 0.05 | 0.07 | 4.9 | 3.3 |
| PUSH Body | ||||||||
| 40 | 0.03 | 0.09 | 3.5 | 6.0 | 0.06 | 0.08 | 4.9 | 4.9 |
| 50 | 0.04 | 0.15 | 4.1 | 9.9 | 0.06 | 0.08 | 5.2 | 5.2 |
| 60 | 0.04 | 0.11 | 5.4 | 9.1 | 0.05 | 0.08 | 4.5 | 4.5 |
| 70 | 0.03 | 0.10 | 5.0 | 8.9 | 0.09 | 0.12 | 7.7 | 7.7 |
| 80 | 0.03 | 0.07 | 5.2 | 6.8 | 0.10 | 0.14 | 10.2 | 10.2 |
| 90 | 0.07 | 0.11 | 15.6 | 11.0 | 0.09 | 0.13 | 11.3 | 11.3 |
| 100 | 0.04 | 0.08 | 14.9 | 11.4 | 0.09 | 0.12 | 11.4 | 11.4 |
| Full | 0.05 | 0.11 | 10.6 | 11.3 | 0.08 | 0.11 | 8.3 | 8.3 |
| PUSH Bar | ||||||||
| 40 | 0.06 | 0.09 | 5.2 | 5.7 | 0.20 | 0.36 | 21.5 | 21.5 |
| 50 | 0.08 | 0.10 | 9.2 | 7.5 | 0.18 | 0.33 | 19.0 | 17.9 |
| 60 | 0.05 | 0.12 | 5.1 | 9.4 | 0.17 | 0.42 | 18.9 | 25.4 |
| 70 | 0.04 | 0.09 | 5.9 | 8.3 | 0.13 | 0.22 | 14.6 | 13.4 |
| 80 | 0.09 | 0.09 | 14.3 | 8.8 | 0.14 | 0.25 | 16.3 | 15.6 |
| 90 | 0.09 | 0.12 | 20.3 | 14.2 | 0.15 | 0.31 | 18.1 | 22.2 |
| 100 | 0.06 | 0.09 | 15.4 | 11.6 | 0.10 | 0.23 | 13.3 | 17.5 |
| Full | 0.07 | 0.11 | 14.5 | 11.0 | 0.21 | 0.32 | 18.6 | 20.5 |
| Bar Sensei | ||||||||
| 40 | 0.08 | 0.14 | 9.1 | 9.4 | 0.23 | 0.20 | 20.4 | 7.7 |
| 50 | 0.09 | 0.10 | 13.5 | 7.6 | 0.16 | 0.15 | 13.8 | 6.5 |
| 60 | 0.07 | 0.08 | 8.8 | 8.0 | 0.13 | 0.13 | 12.1 | 5.8 |
| 70 | 0.07 | 0.09 | 10.7 | 10.2 | 0.13 | 0.19 | 11.8 | 8.8 |
| 80 | 0.08 | 0.24 | 18.3 | 35.8 | 0.13 | 0.13 | 14.9 | 6.1 |
| 90 | 0.08 | 0.12 | 19.1 | 18.0 | 0.15 | 0.14 | 17.7 | 7.9 |
| 100 | 0.13 | 0.12 | 60.5 | 28.5 | 0.14 | 0.15 | 18.4 | 8.5 |
| Full | 0.09 | 0.13 | 22.1 | 18.7 | 0.16 | 0.17 | 15.9 | 8.7 |
| Beast Sensor | ||||||||
| 40 | 0.05 | 0.10 | 5.1 | 6.2 | - | - | - | - |
| 50 | 0.06 | 0.11 | 7.6 | 7.4 | - | - | - | - |
| 60 | 0.08 | 0.15 | 12.0 | 11.8 | - | - | - | - |
| 70 | 0.12 | 0.27 | 22.4 | 25.8 | - | - | - | - |
| 80 | 0.22 | 0.33 | 72.3 | 54.0 | - | - | - | - |
| 90 | 0.21 | 0.48 | 75.8 | 119.9 | - | - | - | - |
| 100 | 0.15 | 0.29 | 40.6 | 65.1 | - | - | - | - |
| Full | 0.14 | 0.30 | 42.4 | 53.2 | - | - | - | - |
| MyLift | ||||||||
| 40 | 0.04 | - | 4.2 | - | - | - | - | - |
| 50 | 0.03 | - | 3.7 | - | - | - | - | - |
| 60 | 0.04 | - | 5.5 | - | - | - | - | - |
| 70 | 0.03 | - | 4.9 | - | - | - | - | - |
| 80 | 0.04 | - | 6.8 | - | - | - | - | - |
| 90 | 0.05 | - | 12.6 | - | - | - | - | - |
| 100 | 0.03 | - | 13.8 | - | - | - | - | - |
| Full | 0.05 | - | 9.7 | - | - | - | - | - |
%, percentage of one repetition maximum; CV, coefficient of variation; MV, mean velocity; PV, peak velocity; TE, typical error.