Male Strength Standards (lb)
| Strength Level | Back Extension | Nordic Hamstring Curl |
|---|---|---|
| Beginner | +13 lb | -43 lb |
| Novice | +80 lb | -2 lb |
| Intermediate | +163 lb | +48 lb |
| Advanced | +261 lb | +105 lb |
| Elite | +367 lb | +167 lb |
Female Strength Standards (lb)
| Strength Level | Back Extension | Nordic Hamstring Curl |
|---|---|---|
| Beginner | +16 lb | -29 lb |
| Novice | +58 lb | +11 lb |
| Intermediate | +109 lb | +60 lb |
| Advanced | +167 lb | +119 lb |
| Elite | +228 lb | +183 lb |