Male Strength Standards (kg)
| Strength Level | Back Extension | Nordic Hamstring Curl |
|---|---|---|
| Beginner | +6 kg | -20 kg |
| Novice | +36 kg | -1 kg |
| Intermediate | +74 kg | +22 kg |
| Advanced | +118 kg | +48 kg |
| Elite | +166 kg | +76 kg |
Female Strength Standards (kg)
| Strength Level | Back Extension | Nordic Hamstring Curl |
|---|---|---|
| Beginner | +7 kg | -13 kg |
| Novice | +26 kg | +5 kg |
| Intermediate | +49 kg | +27 kg |
| Advanced | +76 kg | +54 kg |
| Elite | +104 kg | +83 kg |