Validates jump metrics against physiological norms. Use when analyzing CMJ or drop jump results, discussing RSI values, jump heights, ground contact times, or when metrics seem unusual.
When reviewing jump metrics, validate against these norms:
| Population | RSI Range |
|---|---|
| Recreational | 0.5-1.5 |
| Trained | 1.5-2.5 |
| Elite | 2.5-3.5 |
Flag values > 3.5 as potentially erroneous (measurement or technique issue).
| Population | Male (cm) | Female (cm) |
|---|---|---|
| Recreational | 25-40 | 20-35 |
| Trained | 40-55 | 35-45 |
| Elite | 55-70+ | 45-55+ |
| Range | Interpretation |
|---|
| < 100 ms | Likely sensor/detection error |
| 150-250 ms | Optimal reactive strength |
| 250-350 ms | Acceptable, technique improvement possible |
| > 400 ms | Technique issue or fatigue |
| Jump Type | Typical Range | Flag If |
|---|---|---|
| CMJ | 400-600 ms | > 800 ms |
| Drop Jump | 350-550 ms | > 700 ms |
All three joints should approach full extension at takeoff:
| Depth | Interpretation |
|---|---|
| < 20 cm | Shallow - may limit power generation |
| 20-40 cm | Optimal range |
| > 50 cm | Deep - may indicate technique issue |
When validating metrics, provide:
RSI: 2.8
Status: Normal (Elite range)
Expected: 2.5-3.5 for elite athletes
Interpretation: Excellent reactive strength capability
Ground Contact Time: 85 ms
Status: Warning
Expected: 150-250 ms optimal
Interpretation: Unusually short - likely detection error
Recommendation: Review debug video for takeoff/landing detection accuracy