Table 5.
Validity characteristics of the found studies.
| Study | Environment | Instrument 1 (Criterion) |
Variables Measured | Instrument 2 (Validated) | Type of Analysis | Value |
|---|---|---|---|---|---|---|
| Jarning, 2015 [41] |
Structured practice (n = 1) |
Observers (n = 1) |
4 specific jumps and 3 movements without jumps | ActiGraph GT3X+ | Anova | >0.05 |
| Gageler, 2015 [39] | Training (n = 1) |
Observers (n = 1) |
Movements with jumps * and without jumps | GPSports Systems | Instrument 1 (n=) | 1201 |
| Instrument 2 (n=) | 1198 | |||||
| True+ | 114 (95%) | |||||
| False+ | 54 (4%) | |||||
| False− | 57 (5%) | |||||
| Charlton et al., 2017 [10] | Structured practice; (n = 1) Training (n = 1); Competition (n = 1) |
Observers (n = 2); Intra-obs (k = 0.953) |
Jumps * | Vert Classic | Instrument 1 (n=) | 1487 |
| Instrument 2 (n=) | 1307 | |||||
| False+ | 2 | |||||
| False− | 180 | |||||
| Precision | 0.998 | |||||
| Recall | 0.879 | |||||
| McDonald, 2017 [47] | Structured practice (n = 1) |
Observers (n = 1) Blinded |
6 specific jumps and 6 non-jumping movements | Vert Classic | Instrument 1 (n=) | 728 |
| Instrument 2 (n=) | 705 | |||||
| Sensitivity | 96.80% | |||||
| Specificity | 100% | |||||
| Positive predictive value | 100% | |||||
| Negative predictive value | 94% | |||||
| Mean difference | −2 (−4.3 a 0.2) | |||||
| LOA | −9.0 a 5.0 | |||||
| ME | 0.70% | |||||
| % ME | 0.1% | |||||
| Competition (n = 1) |
Observers (n = 1) Blinded |
Jumps > 15cm | Vert Classic | Instrument 1 (n=) | 977 | |
| Instrument 2 (n=) | 1032 | |||||
| Difference of means | 5 (0.7 a 8.5) | |||||
| LOA | −8 a 17 | |||||
| Skazalski, 2018 [24] | Trainings (n = 3); Matches (n = 2) |
Observers (n = 2) Blinded |
Jumps * | Vert Classic | Instrument 1 (n=) | 3637 |
| Instrument 2 (n=) | 3612 | |||||
| False+ | 12 | |||||
| False− | 25 | |||||
| Schleitzer, 2022 [50] | Structured and unstructured practice (n = 1) | Observers (n = 1) |
block, attack, serve | Suunto movesense original | Instrument 1 (n=) | 319 |
| Instrument 2 (n=) | 306 | |||||
| True+ | 306 (95.9%) | |||||
| False− | 13 (4.1%) | |||||
| False + | 14 (4.4%) | |||||
| Laboratory (n = 3) |
Observers (n = 1) |
CMJ | Suunto movesense original | Instrument 1 (n=) | 200 | |
| Instrument 2 (n=) | 200 | |||||
| True+ (%) | 100 | |||||
| False− (%) | 0 | |||||
| Instrument 1 (n=) | ||||||
| Schmidt, 2021 [51] | Competition (n = 2–4/1 set) |
Observers (n = 2) |
Spike, block, serve, set, other | Vert TM Classic | Instrument 1 | 439 |
| Instrument 2 | 392 | |||||
| False+ | 10 | |||||
| False− | 47 | |||||
| Precision | 0.975 | |||||
| Recall | 0.893 |
* Any occasion when both feet of an athlete cease to have contact with the ground.